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  • what is standard approach to create a responsive website using javascript,php ajax and perhaps zend framework [closed]

    - by shawndreck
    I am working on a web system currently and plans to heavily use javascript with ajax to make the user interface more friendlier, not fancy as such. The javascript will be used for client side form validation, data loading from server and creating proper content with the result, also to for floating windows during add/edit or external references. Here is a scenerio that could clearify my question. A user wants to update card but instead of jumping to another page to verify the available colors,size and prizes of product, those information are shown in a floating window and changes in the floating window can affect the underlying one. My question is : 1. What are some of the approaches to encounter this situation? 2. Are there any helpful tips, tricks and links on this subject? I am comfortable with js,php and zend. I would appreciate any advice,tip and tricks, problem solving approach to handle a situation like this! Thanks in advance. Hope this make sense.

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  • Best tool for DOM manipulation ?

    - by Olivier Lalonde
    I'm working on a web scraper which will aggregate data from various websites. I've started using PHP's built in DOM functions but after running into a couple of issues (especially regarding malformed markup and character encoding), I've chosen to ditch PHP. I was thinking of server side Javascript but am open to other suggestions. If I go with Javascript, which interpreter should I use?

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  • Mechanize Javascript ...

    - by Horace Ho
    I try to submit a form by Mechanize, however, I am not sure how to add necessary form valuables which are done by some Javascript. Since Mechanize does not support Javascript yet, and so I try to add the variables manually. The form source: <form name="aspnetForm" method="post" action="list.aspx" language="javascript" onkeypress="javascript:return WebForm_FireDefaultButton(event, '_ctl0_ContentPlaceHolder1_cmdSearch')" id="aspnetForm"> <input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" /> <input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" /> <input type="hidden" name="__LASTFOCUS" id="__LASTFOCUS" value="" /> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/..." /> <script type="text/javascript"> <!-- var theForm = document.forms['aspnetForm']; if (!theForm) { theForm = document.aspnetForm; } function __doPostBack(eventTarget, eventArgument) { if (!theForm.onsubmit || (theForm.onsubmit() != false)) { theForm.__EVENTTARGET.value = eventTarget; theForm.__EVENTARGUMENT.value = eventArgument; theForm.submit(); } } // --> </script> <script language="javascript"> <!-- var _linkpostbackhit = 0; function _linkedClicked(id, key, str, a, b) { if (!b || !_linkpostbackhit) { if (!a) { __doPostBack(key, id); _linkpostbackhit = 1; } else { if (window.confirm(str)) { __doPostBack(key, id); _linkpostbackhit = 1; } } } return void(0); } // --> </script> ... <a href="JavaScript:_linkedClicked('123456','_ctl0:ContentPlaceHolder1:Link', '',0,1);">123456</a> ... </form> I tried to add the 2 variables: page.forms.first['__EVENTTARGET'] = '_ctl0:ContentPlaceHolder1:Link' page.forms.first['__EVENTARUGMENT'] = '123456' and submit the form: page.forms.first.click_button(page.forms.first.buttons.first) The result returned only (re)show the current list of links as if I have not clicked on any of the links. Any help will be appreciated. Thanks!

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  • JavaScript accessing form elements using document.forms[].elements[]

    - by thecoshman
    var loc_name = document.forms['create_<?php echo(htmlspecialchars($window_ID)); ?>'].elements['location_name']; alert(loc_name); This just gives me the message 'undefined' where as... var loc_name = document.forms['create_<?php echo(htmlspecialchars($window_ID)); ?>']; alert(loc_name); Gives me the object form business. Have I just got this all wrong? What is the 'proper' way to access this form element. The form element has the correct name and it has an id, the id is similar but not the same. ** HTML - as reuqested ** <form action="javascript:void(0)" name="create_<?php echo(htmlspecialchars($window_ID)); ?>" method="GET" onsubmit="return false"> <td> <input type="text" id="location_name_<?php echo($window_ID); ?>" name="location_name" value="Enter a name" onfocus="if(this.value == 'Enter a name'){this.value = ''}" onblur="if(this.value == ''){ this.value = 'Enter a name' }" /> </td> <td colspan="2"> <input type="button" name="create_location" value="Create" onclick="var pre_row_was = $('#pre_form_row_<?php echo($window_ID); ?>').innerHTML; $('#pre_form_row_<?php echo($window_ID); ?>').innerHTML = '<td colspan=\'3\'>Validating...</td>'; var loc_name = document.forms['create_<?php echo(htmlspecialchars($window_ID)); ?>'].elements['location_name']; alert(loc_name); if(loc_name.value == '') { alert('You can\'t leave the room name blank'); loc_name.focus(); loc_name.value = 'Enter a name'; $('#pre_form_row_<?php echo($window_ID); ?>').innerHTML = pre_row_was; return false; } if(loc_name.value == 'Enter a name') { alert('You must enter a room name first'); loc_name.focus(); $('#pre_form_row_<?php echo($window_ID); ?>').innerHTML = pre_row_was; return false; } $('#pre_form_row_<?php echo($window_ID); ?>').innerHTML = pre_row_was; Window_manager.new_window().load_xml('location/create.php?location_name=' + loc_name.value).display();" /> </td> </form> ugly as sin that is...

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  • Help creating a JavaScript mixin in Tapestry5?

    - by shane87
    I am creating a mixin which renders a javascript file when a textfield gains focus. I am new to the idea of mixins in Tapestry, and I am unsure of where to place my original javascript file which i wish to run when the textfield gains focus. The following is an example of my code: The Java mixin class: package asc.mixins; import org.apache.tapestry5.RenderSupport; import org.apache.tapestry5.annotations.AfterRender; import org.apache.tapestry5.annotations.Environmental; import org.apache.tapestry5.annotations.IncludeJavaScriptLibrary; import org.apache.tapestry5.annotations.InjectContainer; import org.apache.tapestry5.corelib.base.AbstractTextField; @IncludeJavaScriptLibrary("js_dasher_mixin.js") public class DasherMixin { @Environmental private RenderSupport renderSupport; @InjectContainer private AbstractTextField field; @AfterRender void addScript() { this.renderSupport.addScript("new JSDasher('%s');", this.field.getClientId()); } } The Javascript mixin file: JSDasher = Class.create({ initialize: function(textField) { this.textField = $(textField); this.textField.observe('focus', this.onFocus.bindAsEventListener(this)); }, onFocus: function(event) { //call my javascript init() function } } part of my javascript file I wish to run when the textfield gains focus: var posX, posY; // Sets up our global variables and dispatches an init request to the server. function init() { posX=0; posY=0; canvas = document.getElementById("canvas"); canvasWidth = canvas.offsetWidth; canvasHeight = canvas.offsetHeight; if (canvas.getContext) { ctx = canvas.getContext("2d"); } canvas.onclick = canvasClicked; canvas.onmousemove = mouseMoved; canvasOffsetX = findPosX(canvas); canvasOffsetY = findPosY(canvas); sessID = -1; sendInitRQ(canvasWidth, canvasHeight); } My javascript file is much larger than above, my question is where should I put my javascript code above? Should it all be contained in the mixin.js file? if so where exactly should it go? Thanks in advance for any help.

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  • Drupal incorrectly escapes tags in javascript

    - by sergdev
    I installed drupal-6.16. I applied the patch from the post http://drupal.org/node/222926#comment-930745. It works correctly in simple cases. But following code of counter is handled incorrectly and counter is now displayed on the page after drupal. Drupal modifies the string "alt='1Gb.ua counter' /><\/a>")</a></script> to "alt='1Gb.ua counter' />&lt;\/a>")</a></script> The full code of counter follows: <br><br> Text <br><br> <!-- counter.1Gb.ua --> <script language="javascript" type="text/javascript"> cgb_js="1.0"; cgb_r=""+Math.random()+"&r="+ escape(document.referrer)+"&pg="+ escape(window.location.href); document.cookie="rqbct=1; path=/"; cgb_r+="&c="+ (document.cookie?"Y":"N"); </script><script language="javascript1.1" type="text/javascript"> cgb_js="1.1";cgb_r+="&j="+ (navigator.javaEnabled()?"Y":"N")</script> <script language="javascript1.2" type="text/javascript"> cgb_js="1.2"; cgb_r+="&wh="+screen.width+ 'x'+screen.height+"&px="+ (((navigator.appName.substring(0,3)=="Mic"))? screen.colorDepth:screen.pixelDepth)</script> <script language="javascript1.3" type="text/javascript"> cgb_js="1.3"</script> <script language="javascript" type="text/javascript">cgb_r+="&js="+cgb_js; document.write("<a href='http://www.1Gb.ua?cnt=1416'>"+ "<img src='http://counter.1Gb.ua/cnt.aspx?"+ "u=1416&"+cgb_r+ "&' border=0 width=88 height=31 "+ "alt='1Gb.ua counter'><\/a>")</script> <noscript><a href='http://www.1Gb.ua?cnt=1416'> <img src="http://counter.1Gb.ua/cnt.aspx?u=1416" border=0 width="88" height="31" alt="1Gb.ua counter"></a> </noscript> <!-- /counter.1Gb.ua --> Does anybody have this code working? How can it be fixed? Thanks a lot in advance!

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  • Help with javascript form validation

    - by zac
    I am getting a headache with form validation and hoping that the kind folks here can give me a hand finishing this sucker up I have it basically working except the email validation is very simplistic (only alerts if it is blank but does not actually check it if is a valid email address) and I am relying on ugly alerts but would like to have it reveal a hidden error div instead of the alert. I have this all wrapped up with an age validation check too.. here are the important bits, minus the cookie scripts function checkAge() { valid = true; if ( document.emailForm.email.value== 0 ) { alert ( "Please enter your email." ); valid = false; } if ( document.emailForm.year.selectedIndex == 0 ) { alert ( "Please select your Age." ); valid = false; } var min_age = 13; var year = parseInt(document.forms["emailForm"]["year"].value); var month = parseInt(document.forms["emailForm"]["month"].value) - 1; var day = parseInt(document.forms["emailForm"]["day"].value); var theirDate = new Date((year + min_age), month, day); var today = new Date; if ( (today.getTime() - theirDate.getTime()) < 0) { var el = document.getElementById('emailBox'); if(el){ el.className += el.className ? ' youngOne' : 'youngOne'; } document.getElementById('emailBox').innerHTML = "<img src=\"emailSorry.gif\">" createCookie('age','not13',0) return false; } else { //this part doesnt work either document.getElementById('emailBox').innerHTML = "<img src=\"Success.gif\">" createCookie('age','over13',0) return valid; }; }; var x = readCookie('age'); window.onload=function(){ if (x=='null') { }; if (x=='over13') { }; if (x=='not13') { document.getElementById('emailBox').innerHTML = "<img src=\"emailSorry.gif\">"; }; } can someone please help me figure a better email validation for this bit: if ( document.emailForm.email.value== 0 ) { alert ( "Please enter your email." ); valid = false; } and how would I replace the alert with something that changes a class from hidden to visible? Something like? document.getElementById('emailError').style.display='block'

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  • Remove links with Javascript

    - by Arlen Beiler
    How do I remove links from a webpage with Javascript. I am using Google Chrome. The code I tried is: function removehyperlinks() { try { alert(document.anchors.length); alert(document.getElementsByTagName('a')); for(i=0;i=document.anchors.length;i++) { var a = document.anchors[i]; a.outerHTML = a.innerHTML; var b = document.getElementsByTagName('a'); b[i].outerHTML = b[i].innerHTML; } } catch(e) { alert (e);} alert('done'); } Of course, this is test code, which is why I have the alerts and 2 things trying at the same time. The first alert returns "0" the second [Object NodeList] and the third returns "done". My html body looks like this: <body onload="removehyperlinks()"> <ol style="text-align:left;" class="messagelist"> <li class="accesscode"><a href="#">General information, Updates, &amp; Meetings<span class="extnumber">141133#</span></a> <ol> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li><a href="#">...</a></li> <li start="77"><a href="#"">...</a></li> <li start="88"><a href="#">...</a></li> <li start="99"><a href="#">...</a></li> </ol> </li> </ol> </body>

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  • Drupal incorrectly espaces tags in javascript

    - by sergdev
    I installed drupal-6.16. I applied the patch from the post http://drupal.org/node/222926#comment-930745. It works correctly in simple cases. But for following code for counter is handled incorrectly: <br><br> Text <br><br> <!-- counter.1Gb.ua --> <script language="javascript" type="text/javascript"> cgb_js="1.0"; cgb_r=""+Math.random()+"&r="+ escape(document.referrer)+"&pg="+ escape(window.location.href); document.cookie="rqbct=1; path=/"; cgb_r+="&c="+ (document.cookie?"Y":"N"); </script><script language="javascript1.1" type="text/javascript"> cgb_js="1.1";cgb_r+="&j="+ (navigator.javaEnabled()?"Y":"N")</script> <script language="javascript1.2" type="text/javascript"> cgb_js="1.2"; cgb_r+="&wh="+screen.width+ 'x'+screen.height+"&px="+ (((navigator.appName.substring(0,3)=="Mic"))? screen.colorDepth:screen.pixelDepth)</script> <script language="javascript1.3" type="text/javascript"> cgb_js="1.3"</script> <script language="javascript" type="text/javascript">cgb_r+="&js="+cgb_js; document.write("<a href='http://www.1Gb.ua?cnt=1416'>"+ "<img src='http://counter.1Gb.ua/cnt.aspx?"+ "u=1416&"+cgb_r+ "&' border=0 width=88 height=31 "+ "alt='1Gb.ua counter'><\/a>")</script> <noscript><a href='http://www.1Gb.ua?cnt=1416'> <img src="http://counter.1Gb.ua/cnt.aspx?u=1416" border=0 width="88" height="31" alt="1Gb.ua counter"></a> </noscript> <!-- /counter.1Gb.ua --> It modifies the string "alt='1Gb.ua counter' /><\/a>")</a></script> to "alt='1Gb.ua counter' />&lt;\/a>")</a></script> Does anybody have this code working? If so how this can be fixed? Thanks a lot in advance!

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  • Javascript - undefined cookie value?

    - by Computeras
    Try running the code, I know the problem is in the 1. part. Thanks in advance, P.S. I'm a newbie in JS. <html> <head> <script> { //1. part var Cookies = ""; function createCookie(name,value,days) { if (days) { var date = new Date(); date.setTime(date.getTime()+(days*24*60*60*1000)); var expires = "; expires="+date.toGMTString(); } else var expires = ""; document.cookie = name+"="+value+expires+"; path=/"; } function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i=0;i < ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); } return null; } function eraseCookie(name) { createCookie(name,"",-1); } //2. part function saveIt(name) { var x = document.forms['cookieform'].cookievalue.value; if (!x) alert('Please fill in a value in the input box.'); else { Cookies.create(name,x,7); alert('Cookie created'); } } function readIt(name) { alert('The value of the cookie is ' + Cookies[name]); } function eraseIt(name) { Cookies.erase(name); alert('Cookie erased'); } function init() { for (var i=1;i<3;i++) { var x = Cookies['ppkcookie' + i]; if (x) alert('Cookie ppkcookie' + i + '\nthat you set on a previous visit, is still active.\nIts value is ' + x); } } } </script> <body> <form name = "forma"> <input type = "text" name = "cookievalue"> <input type = "button" value = "Spremi" onClick = "saveIt('ppkcookie1')"> <input type = "button" value = "Ispisi" onClick = "readIt('ppkcookie1')"> </form> </body> </html>

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  • Cross domain javascript form filling, reverse proxy

    - by Michel van Engelen
    I need a javascript form filler that can bypass the 'same origin policy' most modern browsers implement. I made a script that opens the desired website/form in a new browser. With the handler, returned by the window.open method, I want to retrieve the inputs with theWindowHandler.document.getElementById('inputx') and fill them (access denied). Is it possible to solve this problem by using Isapi Rewrite (official site) in IIS 6 acting like a reverse proxy? If so, how would I configure the reverse proxy? This is how far I got: RewriteEngine on RewriteLogLevel 9 LogLevel debug RewriteRule CarChecker https://the.actualcarchecker.com/CheckCar.aspx$1 [NC,P] The rewrite works, http://ourcompany.com/ourapplication/CarChecker, as evident in the logging. From within our companysite I can run the carchecker as if it was in our own domain. Except, the 'same origin policy' is still in force. Regards, Michel

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  • outlook security alert after adding a second wireless access point to the network

    - by Mark
    Just added a Netgear WG103 Wireless Access Point in our conference room to allow visitors to access the internet through out internal network. When switched on visitors can connect to the intenet and everything works fine. Except, when the Access Point is switched on, normal users of the network get a Security Alert when they try to start Outlook 2007. The Security Alert is the same as the one shown in question 148526 asked by desiny back in June 2010 (http://serverfault.com/questions/148526/outlook-security-alert-following-exchange-2007-upgrade-to-sp2) rather than "autodiscover.ad.unc.edu" my security alert references our "Remote.server.org.uk". If I view the certificate it relates to "Netgear HTTPS:....", but the only Netgear equipment we have is the new Access Point installed in the conference room. If the Access Point is not switched on we do not get the Security Alert. At first I thought it was because we had selected "WPA-PSK & WPA2-PSK" Network Authentication Type but it continues to occur even if we opt for "Shared Key" WEP Data Encryption. I do not understand why adding a Netgear Wireless Access point would cause Outlook to issue a Security Alert when users try to read their email. Does anyone know what I have to do to get rid of the Security Alert? Thanks in advance for reading this and helping me out.

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  • Get lots of javascript problems when using Opera 11.00 to surf

    - by s hanley
    Sites like ebay and even superuser stop working properly when I use opera 11.00. Menus stop working everywhere from ebay to godaddy. Hovering on a menu item doesn't expand it, no sub menu slides out. This makes a large number of very popular websites unusable. Am I right in assuming this is a javascript issue? I use opera for the turbo feature (I have tested opera with and without turbo so it's not turbo's fault) because I'm on mobile broadband until I get my phone line sorted out. Turbo helps me save money, as well as allowing me to surf at a sane speed. Is there a firefox or chrome equivalent to opera turbo that doesn't cost money? I'm using Opera 11.00, build 1156.

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  • Functions registered with ExternalInterface.addCallback not available in Javascript

    - by Selene
    I'm working on a Flash game that needs to call some Javascript on the page and get data back from it. Calling Javascript from Flash works. Calling the Flash functions from Javascript (often) doesn't. I'm using the Gaia framework. What happens: The swf is loaded in with SWFObject There's a button in the Flash file. On click, it uses ExternalInterface.call() to call a Javascript function. This works. The Javascript function calls a Flash function that was exposed with ExternalInterface.addCallback(). Sometimes, the Javascript produces the following error: TypeError: myFlash.testCallback is not a function. When the error happens, it affects all functions registered with addCallback(). Gaia and some of its included libraries use addCallback(), and calling those functions from Javascript also produces the TypeError. Waiting a long time before pressing the button in Flash doesn't solve the error. Having Flash re-try addCallback() periodically doesn't solve the error When the error occurs, ExternalInterface.available = true and ExternalInterface.objectID contains the correct name for the Flash embed object. When the error occurs, document.getElementById('myflashcontent') correctly returns the Flash embed object. From my Page class: public class MyPage extends AbstractPage { // declarations of stage instances and class variables // other functions override public function transitionIn():void { send_button.addEventListener(MouseEvent.MOUSE_UP, callJS); exposeCallbacks(); super.transitionIn(); } private function exposeCallbacks():void { trace("exposeCallbacks()"); if (ExternalInterface.available) { trace("ExternalInterface.objectID: " + ExternalInterface.objectID); try { ExternalInterface.addCallback("testCallback", simpleTestCallback); trace("called ExternalInterface.addCallback"); } catch (error:SecurityError) { trace("A SecurityError occurred: " + error.message + "\n"); } catch (error:Error) { trace("An Error occurred: " + error.message + "\n"); } } else { trace("exposeCallbacks() - ExternalInterface not available"); } } private function simpleTestCallback(str:String):void { trace("simpleTestCallback(str=\"" + str + "\")"); } private function callJS(e:Event):void { if (ExternalInterface.available) { ExternalInterface.call("sendTest", "name", "url"); } else { trace("callJS() - ExternalInterface not available"); } } } My Javascript: function sendTest(text, url) { var myFlash = document.getElementById("myflashcontent"); var callbackStatus = ""; callbackStatus += '\nmyFlash[testCallback]: ' + myFlash['testCallback']; //console.log(callbackStatus); var errors = false; try { myFlash.testCallback("test string"); } catch (err) { alert("Error: " + err.toString()); error = true; } if (!error) { alert("Success"); } } var params = { quality: "high", scale: "noscale", wmode: "transparent", allowscriptaccess: "always", bgcolor: "#000000" }; var flashVars = { siteXML: "xml/site.xml" }; var attributes = { id: "myflashcontent", name: "myflashcontent" }; // load the flash movie. swfobject.embedSWF("http://myurl.com/main.swf?v2", "myflashcontent", "728", "676", "10.0.0", serverRoot + "expressInstall.swf", flashVars, params, attributes, function(returnObj) { console.log('Returned ' + returnObj.success); if (returnObj.success) { returnObj.ref.focus(); } });

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  • Javascript html5 database transaction problem in loops

    - by Marek
    I'm hittig my head on this and i will be glad for any help. I need to store in a database a context (a list of string ids) for another page. I open a page with a list of artworks and this page save into the database those artowrks ids. When i click on an artwork i open its webpage but i can access the database to know the context and refer to the next and prev artwork. This is my code to retrieve the contex: updateContext = function () { alert("updating context"); try { mydb.transaction( function(transaction) { transaction.executeSql("select artworks.number from artworks, collections where collections.id = artworks.section_id and collections.short_name in ('cro', 'cra', 'crp', 'crm');", [], contextDataHandler, errorHandler); }); } catch(e) { alert(e.message); } } the contextDatahandler function then iterates through the results and fill again the current_context table: contextDataHandler = function(transaction, results) { try { mydb.transaction( function(transaction) { transaction.executeSql("drop table current_context;", [], nullDataHandler, errorHandler); transaction.executeSql("create table current_context(id String);", [], nullDataHandler, errorHandler); } ) } catch(e) { alert(e.message); } var s = ""; for (var i=0; i < results.rows.length; i++) { var item = results.rows.item(0); s += item['number'] + " "; mydb.transaction( function(tx) { tx.executeSql("insert into current_context(id) values (?);", [item['number']]); } ) } alert(s); } the result is, i get the current_context table deleted, recreated, and filled, but all the rows are filled with the LAST artwork id. the query to retrieve the artworks ids works, so i think it's a transaction problem, but i cant figure out where. thanks for any help

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  • JavaScript - Building JSON object

    - by user208662
    Hello, I'm trying to understand how to build a JSON object in JavaScript. This JSON object will get passed to a JQuery ajax call. Currently, I'm hard-coding my JSON and making my JQuery call as shown here: $.ajax({ url: "/services/myService.svc/PostComment", type: "POST", contentType: "application/json; charset=utf-8", data: '{"comments":"test","priority":"1"}', dataType: "json", success: function (res) { alert("Thank you!"); }, error: function (req, msg, obj) { alert("There was an error"); } }); This approach works. But, I need to dynamically build my JSON and pass it onto the JQuery call. However, I cannot figure out how to dynamically build the JSON object. Currently, I'm trying the following without any luck: var comments = $("#commentText").val(); var priority = $("#priority").val(); var json = { "comments":comments,"priority":priority }; $.ajax({ url: "/services/myService.svc/PostComment", type: "POST", contentType: "application/json; charset=utf-8", data: json, dataType: "json", success: function (res) { alert("Thank you!"); }, error: function (req, msg, obj) { alert("There was an error"); } }); Can someone please tell me what I am doing wrong? I noticed that with the second version, my service is not even getting reached. Thank you

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  • Prevent Rails link_to_remote multiple submits w Javascript

    - by Chris
    In a Rails project I need to keep a link_to_remote from getting double-clicked. It looks like :before and :after are my only choices - they get prepended/appended to the onclick Ajax call, respectively. But if I try something like: :before => "self.stopObserving()" t,he Ajax is never run. If I try it for :after the Ajax is run but the link never stops observing. The solutions I've seen rely on creating a variable and blocking the whole form, but there are multiple link_to_remote rows on this page and it is valid to click more than one of them at a time - just not the same one twice. One variable per row declared outside of link_to_remote seems very kludgey... Instead of using Prototype I originally tried plain Javascript first for this proof of concept - but it fails too: <a href="#" onclick="self.onclick = function(){alert('foo');};"click</a just puts up an alert when clicked - the lambda here does nothing? This next one is more like the desired goal and should only alert the first time. But instead it alerts every time: <a href="#" onclick="alert('bar'); self.onclick = function(){return false;};"click</a All ideas appreciated!

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  • Setting javascript prototype function within object class declaration

    - by Tauren
    Normally, I've seen prototype functions declared outside the class definition, like this: function Container(param) { this.member = param; } Container.prototype.stamp = function (string) { return this.member + string; } var container1 = new Container('A'); alert(container1.member); alert(container1.stamp('X')); This code produces two alerts with the values "A" and "AX". I'd like to define the prototype function INSIDE of the class definition. Is there anything wrong with doing something like this? function Container(param) { this.member = param; if (!Container.prototype.stamp) { Container.prototype.stamp = function() { return this.member + string; } } } I was trying this so that I could access a private variable in the class. But I've discovered that if my prototype function references a private var, the value of the private var is always the value that was used when the prototype function was INITIALLY created, not the value in the object instance: Container = function(param) { this.member = param; var privateVar = param; if (!Container.prototype.stamp) { Container.prototype.stamp = function(string) { return privateVar + this.member + string; } } } var container1 = new Container('A'); var container2 = new Container('B'); alert(container1.stamp('X')); alert(container2.stamp('X')); This code produces two alerts with the values "AAX" and "ABX". I was hoping the output would be "AAX" and "BBX". I'm curious why this doesn't work, and if there is some other pattern that I could use instead.

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  • JavaScript function, which reads connections between objects

    - by Nikita Sumeiko
    I have a JavaScript literal: var members = { "mother": { "name" : "Mary", "age" : "48", "connection": { "brother" : "sun" } }, "father": { "name" : "Bill", "age" : "50" }, "brother": { "name" : "Alex", "age" : "28" } } Than I have a function, which should read connections from the literal above. It looks like this: function findRelations(members){ var wires = new Array(); var count = 0; for (n = 0; n < members.length; n++){ alert(members.length); // this alert is undefined if (members[n].connection){ for (i = 0; i < members[n].connection[0].length; i++){ var mw = new Array(); var destination = 0; for (m = 0; m < members.length; m ++){ if (members[m] == members[n].connection[0]){ destination = m; mw = [n, destination]; wires [count] = mw; count++; } } } } } return wires; } However, when I run this function, I get nothing. And the first alert, which is placed inside the function shows 'undefined' at all. findRelations(members); alert("Found " + wires.length + " connections"); I guess that's because of JavaScript literal. Could you suggest how to change a function or perhaps to change litteral to JSON array to get it work?! And at the end to get 'm' and 'n' values as numbers.

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  • Behavior of local variables in JavaScripts with()-statement

    - by thr
    I noticed some weird (and to my knowledge undefined behavior, by the ECMA 3.0 Spec at least), take the following snippet: var foo = { bar: "1", baz: "2" }; alert(bar); with(foo) { alert(bar); alert(bar); } alert(bar); It crashes in both Firefox and Chrome, because "bar" doesn't exist in the first alert(); statement, this is as expected. But if you add a declaration of bar inside the with()-statement, so it looks like this: var foo = { bar: "1", baz: "2" }; alert(bar); with(foo) { alert(bar); var bar = "g2"; alert(bar); } alert(bar); It will produce the following: undefined, 1, g2, undefined It seems as if you create a variable inside a with()-statement most browsers (tested on Chrome or Firefox) will make that variable exist outside that scope also, it's just set to undefined. Now from my perspective bar should only exist inside the with()-statement, and if you make the example even weirder: var foo = { bar: "1", baz: "2" }; var zoo; alert(bar); with(foo) { alert(bar); var bar = "g2"; zoo = function() { return bar; } alert(bar); } alert(bar); alert(zoo()); It will produce this: undefined, 1, g2, undefined, g2 So the bar inside the with()-statement does not exist outside of it, yet the runtime somehow "automagically" creates a variable named bar that is undefined in its top level scope (global or function) but this variable does not refer to the same one as inside the with()-statement, and that variable will only exist if a with()-statement has a variable named bar that is defined inside it. Very weird, and inconsistent. Anyone have an explanation for this behavior? There is nothing in the ECMA Spec about this.

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  • get value from css using document.getElementById().style.height javascript

    - by Jamex
    Hi, Please offer insight into this mystery. I am trying to get the height value from a div box by var high = document.getElementById("hintdiv").style.height; alert(high); I can get this value just fine if the attribute is contained within the div tag, but it returns a blank value if the attribute is defined in the css section. This is fine, it shows 100px as a value. The value can be accessed. <div id="hintdiv" style="height:100px; display: none;"> . . var high = document.getElementById("hintdiv").style.height; alert(high); This is not fine, it shows an empty alert screen. The value is practically 0. #hintdiv { height:100px display: none; } <div id="hintdiv"> . . var high = document.getElementById("hintdiv").style.height; alert(high); But I have no problem accessing/changing the "display:none" attribute whether it is in the tag or in the css section. The div box displays correctly by both attribute definition methods (inside the tag or in the css section). I also tried to access the value by other variations, but no luck document.getElementById("hintdiv").style.height.value ----> undefined document.getElementById("hintdiv").height ---->undefined document.getElementById("hintdiv").height.value ----> error, no execution Any solution? TIA.

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  • html select execute javascript onload

    - by portoalet
    I am using HTML select onchange event to fire another javascript function func1. This html select is written into a form element, which are dynamically generated when users click on a button. The problem is how can I fire the javascript func1 when the dynamically generated form is first shown ? I am thinking of something along the line of on_first_show event for form ? Here is the snippet. I couldnt get the alert('don') to work either (the one just after div) var sPopupContents = "<div ><script type='text/javascript'>alert('don');</script> </div>"; // this javascript is not executed ? I cant get the alert. sPopupContents += "<form name='theform' >"; sPopupContents += "<select name='theselect' onchange='alert(2);"; sPopupContents += "func1()>'"; sPopupContents += "<option value='0' selected='selected'>Value1</option><option value='1'>Value2</option><br/>"; sPopupContents += "</form>";

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  • How to add jsf components in javascript?

    - by Guru
    Is it possible to add JSF Components using javascript? In my case , on change of a select option , i need to display a different combination of input controls (like text box(s)). I thought i could use a element and innerHTML property to display the dynamic controls.But it seems to not work!!! <h:selectOneMenu id="browseType" class="TextBlackNormal" value="#{adminBean.browseType}" onchange="showDynamicBox(this);" valueChangeListener="#{adminBean.theValueChanged}"> <f:selectItems value="#{adminBean.browseTypeList}" /> </h:selectOneMenu> &#160;&#160;&#160;</td> <td> <div id="dynamicBox" style="display:block"><h:inputText class="TextBlackNormal" size="32" name="browseValue" id="browseValue" value="#{adminBean.browseValue}" /></div> </td> javascript code : ~~~~~~~~~~~~~~~~ function showDynamicBox(selectObjj) { //alert('showDynamicBox ' +showDynamicBox); if(selectObjj.options[selectObjj.selectedIndex].value=='IBD/Office/IP' || selectObjj.options[selectObjj.selectedIndex].value=='APA#' ) { alert('just about to change'); document.getElementById("dynamicBox").innerHTML='<h:inputText class="TextBlackNormal" size="3" name="val1" id="val1" /> <h:inputText class="TextBlackNormal" size="3" name="val2" id="val2" /> <h:inputText class="TextBlackNormal" size="3" name="val3" id="val3" /> '; alert(' --> ' +document.getElementById("dynamicBox").innerHTML); }else{ alert('back to pavillion'); document.getElementById("dynamicBox").innerHTML='<h:inputText class="TextBlackNormal" size="32" name="browseValue" id="browseValue" value="#{adminBean.browseValue}" />'; } }

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