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  • How to evaluate json member using variable ?

    - by Miftah
    Hi i've got a problem evaluating json. My goal is to insert json member value to a function variable, take a look at this function func_load_session(svar){ var id = ''; $.getJSON('data/session.php?load='+svar, function(json){ eval('id = json.'+svar); }); return id; } this code i load session from php file that i've store beforehand. i store that session variable using dynamic var. <?php /* * format ?var=[nama_var]&val=[nilai_nama_var] */ $var = $_GET['var']; $val = $_GET['val']; $load = $_GET['load']; session_start(); if($var){ $_SESSION["$var"] = $val; echo "Store SESSION[\"$var\"] = '".$_SESSION["$var"]."'"; }else if($load){ echo $_SESSION["$load"]; } ?> using firebug, i get expected response but i also received error uncaught exception: Syntax error, unrecognized expression: ) pointing at this eval('id = json.'+svar); i wonder how to solve this

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  • Custom Tile Layer Problem

    - by Myra
    Hi,I'm currently implementing logic on custom tile layers via OpenLayers function getTiles() { var res = this.map.getResolution(); var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w)); var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h)); var z = this.map.getZoom(); return ......; } What I need to is to carry this code in Google API v3. As I searched documentation I found this code to work with: var customtile = new google.maps.ImageMapType({ getTileUrl: function (coord, zoom) { .... .... } Unfortonately,I cannot convert logic in OpenLayers code to Google. As I know resolution is 180 * tileSize.w / Math.pow(2, zoom) //where tileSize is 256x256 Since Google projection is same with my tiles WGS84 boundary should be -180,-90,90,180 I need to calculate to extent coordinates,but in function getTileUrl,there are two arguments.One of which is zoom,but the other coord is some x,y pair which I dont understand what that is.What is that exactly ? How can I generalize formula for calculating tile numbers in Google Maps? Thank you Myra

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  • looping thru a list of checkboxes and saving the values, now working properly

    - by Erez
    Hello all, I'm having a bit of a problem with this code. The program gives me a list of checkboxes but a user ID. then u user can change his selection and push the save button (id="btnSaveUserIntersts") and i am trying to save in the hidden textbox all the values of the checkboxes that was choosen. The problem is that i am getting all the time the same selections that came form the database and not getting the new selection that the user made. Can any one tell me what am i doing wrong here? $(document).ready( function() { $('#btnSaveUserIntersts').bind( 'click', function() { var strCheckBoxChecked = new String(); $('input[type=checkbox][checked]').each( function() { strCheckBoxChecked += $(this).val(); strCheckBoxChecked += ','; } ); $('#hidUserInterests').val(strCheckBoxChecked); } ); } ); 10x

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  • jQuery infinite loop w/ tablesorter

    - by Wells
    Got myself in a funny situation: page has three tables. Using sortEnd, any time you sort one table, it sorts the other three. However, since I bound sortEnd to the function that does the sorting, you get a infinite loop of sorting/resorting. It looks like: $("table.tablesorter").tablesorter({widgets: ['zebra']}).bind("sortEnd", function() { $(this).find("th.headerSortDown,.headerSortUp").each(function(i) { index = $(this).attr("cellIndex"); order = ($(this).is(".headerSortDown")) ? 1 : 0; $("table.tablesorter").tablesorter({sortList: [[index,order]]}); }); }); Any tips on how to clean this up?

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  • How to store <TR> id value in array, when I toggle?

    - by James123
    I am toggling 'tr.subCategory1'and its siblings .RegText. at the same time I am trying to store its ids in the array like this list_Visible_Ids[$(this).attr('id')] = $(this).css('display') != 'none' ? 1 : null; (When I collapsed I need store 'null' in array at its id place, If I expand I need store I need store 1 at its id place). But everytime alert($(this).css('display')) showing block. How can I handle this?. So When I collapsed or expanded it is storing 1 only. $(document).ready(function() { $('tr[@class^=RegText]').hide().children('td'); list_Visible_Ids = []; var idsString, idsArray; idsString = $('#myVisibleRows').val(); idsArray = idsString.split(','); $.each(idsArray, function() { if (this != "" || this != null) { $('#' + this).siblings('.RegText').toggle(); list_Visible_Ids[this] = 1; } }); $('tr.subCategory1') .css("cursor", "pointer") .attr("title", "Click to expand/collapse") .click(function() { $(this).siblings('.RegText').toggle(); $(this).siblings('.VolumeRegText').toggle(); //alert($(this).css('display')) list_Visible_Ids[$(this).attr('id')] = $(this).css('display') != 'none' ? 1 : null; }); $('#form1').submit(function() { idsString = ''; for (var index in list_Visible_Ids) { idsString += (idsString != '' ? ',' : '') + index; } $('#myVisibleRows').val(idsString); form1.submit(); }); });

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  • How to get a collection of divs with jquery?

    - by Gal Miller
    I want to get the second img: <form id="formElem" name="formElem" action="" method="post"> <fieldset class="step"> <img src="1.jpg" > </fieldset> <fieldset class="step"> <img src="2.jpg" > </fieldset> <fieldset class="step"> <img src="3.jpg" > </fieldset> </form> I tried doing something like: var imgSRC = $("div[id ='step']").get(1).find('img').attr('src'); alert(imgSRC); Got nothing....

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  • How to tell if string time-A is before time-B?

    - by John Isaacks
    if I have 4 variables startTime; endTime; startMerid; endMerid; startMarid and endMarid are either going to be 'AM' or 'PM'. but startTime and endTime are going to be strings like 'dd:dd' so it may be start:12:30 PM and end:5:30 PM How can I validate that the end time is not before the start time? Thanks!!

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  • How to make the swf load after all the images and text loaded?

    - by Jay
    My CMS system allow people to post some swf on the homepage, however, sometime there is video which is included in swf, not two files swf+flv. When the swf video load, it near used up the bandwidth and so the page seems not response for a while ... Can I use jQuery to control all the swf in a page that they load after the others done or maybe just load it after 3s or what? Thanks!!

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  • Function of: if(/(file|http).*/.test(url)) { }

    - by WmasterJ
    I am wondering what this technique is called and what it does. It seems to be validating some regular expression on the variable url. I am customizing another persons code: var url = document.getElementById("editorURL").value; if(/(file|http).*/.test(url)) { } Maybe someone has a link to an article that explains this a bit more in-depth?

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  • How check user online status in web site?

    - by Milan Sanda Sri
    how can i get know when user online and offline. when one user log in to my site. i set a script to change database table field of that user, as a boolean to indicates users online states. but my problem is if he/she leaved my site without clicking the log-out button, then my script does not work and database show he/she as a online user. please give me any sugestion to fix this. i have no idea what to do! i check some answers on this topic, but most of says asnwer lie this -- if last activity time is less than now+15 minutes then user is online, offline otherwise. but i have seen some social networking sites shows that we have gone offline, just we close the browser. how they do that ?

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  • class selector refuses after append to body

    - by supersize
    I'm appending loads of divs in a wrapper: var cubes = [], allCubes = '', for(var i = 0; i < 380; i++) { var randomleft = Math.floor(Math.random()*Math.floor(Math.random()*1000)), randomtop = Math.floor(Math.random()*Math.floor(Math.random()*1000)); allCubes += '<div id="cube'+i+'" class="cube" style="position: absolute; border: 2px #000 solid; left: '+randomleft+'px; top: '+randomtop+'px; width: 9px; height: 9px; z-index: -1"></div>'; } $('#wrapper').append(allCubes); // performance for(var i = 0; i < 380; i++) { cubes.push($('#cube'+i)); } and then I would like to make them all draggable with jQueryUI and log their current position. var allc = $('.cube'); allc.draggable().on('mouseup', function(i) { allc.each(function() { var nleft = $(this).offset().left; var ntop = $(this).offset().top; console.log('cubes['+i+'].animate({ left:'+nleft+',top:'+ntop+'})'); }); }); Unfortunenately it does not work. They are neither draggable nor there comes up a log. Thanks

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  • Print specific part of webpage

    - by Grega Menih
    I'm trying to print a specific part of my application. The application has a list of users, displaying their first and last name. When I click a user I get a popup with more detailed information about them. How would I go about printing just the popup for a user I clicked? The popup looks like this: <div id="user<?=$user->id;?>" class="popup"> <div class="details"> User details... </div> <a href="#print">Print</a> </div> The print button isn't working yet though.

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  • How do I cancel a text selection after the initial mousedown event?

    - by cwillu-gmail
    I'm trying to implement a pop-up menu based on a click-and-hold, positioned so that a (really) slow click will still trigger the default action, and with the delay set so that a text-selection gesture won't usually trigger the menu. What I can't seem to do is cancel the text-selection in a way that doesn't prevent text-selection in the first place: returning false from the event handler (or calling $(this).preventDefault()) prevents the user from selecting at all, and the obvious $().trigger('mouseup') doesn't doesn't do anything with the selection at all. This is in the general context of a page, not particular to a textarea or other text field. e.stopPropogation() doesn't cancel text-selection. I'm not looking to prevent text selections, but rather to veto them after some short period of time, if certain conditions are met.

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  • Caller property of JS for "foo = function()" style of coding

    - by arvind
    I want to use the property of "caller" for a function which is defined here It works fine for this style of function declaration function g() { alert(g.caller.name) // f } function f() { alert(f.caller.name) // undefined g() } f() JSfiddle for this But then my function declaration is something like g = function() { alert(g.caller.name) // expected f, getting undefined } f = function() { alert("calling f") alert(f.caller.name) // undefined g() } f() and I am getting undefined (basically not getting anything) JSfiddle for this Is there any way that I can use the caller property without having to rewrite my code? Also, I hope I have not made any mistakes in usage and function declaration since I am quite new to using JS.

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  • Ignoring certain chars globally

    - by shi kui
    Consider it that '_'s in a number doesn't change that number's value so 1000==1_000==10_00. The Problem: given numbers like 1_244_23 1412_2 1_1111 etc..., how could I decide whether certain number appears in that collection? For example: 1244_23 yes, 11_111 yes, 1412_1 no. How could using regex to solve this? I mean, if I could tell the regex engine just ignore these '_''s when matching then this problem becomes trivial? How could I do so?

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  • What is this weird script I found on facebook?

    - by Mike Turley
    Not so much a question to help my own programming, but I found this page on facebook with a cool illusion and a page that says "to see the real illusion, copy and paste this code into your address bar" and there is a script: http://pastebin.com/LQUVQ8hm What the hell is this? What would happen if I put it in my address bar, which I assume would be a very unwise idea? I am confused.

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  • Why does my simple event handling example not work?

    - by njreed
    I am trying to make a simple event handler. (Note, I'm not trying to implement a full-blown publish/subscribe model; I'm just interested in why my example doesn't work as I think it should) var myObj = (function () { var private = "X"; function triggerEvent(eventName) { if (this[eventName]) { this[eventName](); } } // Setter / Getter function getProp() { return private; } function setProp(value) { private = value; triggerEvent("onPropChange"); } // Public API return { // Events "onPropChange": null, // Fires when prop value is changed // Methods "getProp": getProp, "setProp": setProp }; })(); // Now set event handler myObj.onPropChange = function () { alert("You changed the property!"); }; myObj.setProp("Z"); // --> Nothing happens. Wrong // Why doesn't my alert show? I set the onPropChange property of my object to a simpler handler function but it is not being fired. I have debugged this and it seems that in triggerEvent the variable this is referencing the global window object. I thought it should reference myObj (which is what I need). Can someone explain the error in my thinking and how I correct this? Help much appreciated. jsFiddle here

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  • Jquery plugin seems to leak memory no matter what I do

    - by ddombrow
    I've recently been tasked with ferreting out some memory leaks in an application for my work. I've narrowed down one of the big leaks to a jquery plugin. It appears we're using a modified version of a popular context menu jquery plugin. It looks like one of the developers before me attempted to add a destroy method. I noticed it wasn't very well written and attempted to rewrite. Here's the meat of my destroy method: if (menu.childMenus) { for (var i = 0; i < menu.childMenus.length; i++) { $(menu.childMenus[i]).destroy(menu.childMenus[i], 'contextmenu'); } } var recursiveUnbind = function(node) { $(node).unbind(); //$(node).empty().remove(); $.each(node, function(obj) { recursiveUnbind(obj); }); }; $.each(menu, function() { recursiveUnbind(menu); }); $(menu).empty().remove(); In my mind this code should blow away all the jquery event binding and remove the dom elements, yet still the plugin leaks gobs of memory in IE7. The modified plugin with a test page can be found here: http://www.olduglyhead.com/jquery/leaks/ Clicking the button repeatedly will cause IE7 to leak a bunch of memory.

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  • Loading jQuery multiple times in the same page

    - by Winaji
    I'm implementing a plug-in that's embeddable in different sites (a la Meebo, Wibiya), and I want to use jQuery. Problem is, the site I'm embedding to, may already have a jQuery script loaded. The question is, what's the best approach for this kind of problem: Should I just check if jQuery is already loaded and if so, use the original site's jQuery, otherwise load it myself? If I use this approach, am I not risking comaptibility problems (i.e. the site uses an old version of jQuery)? Should I load jQuery myself (whether it's already loaded or not) and call "jQuery.noConflict(true)" when it's finished loading? If so, how can I make sure that my jQuery has finished loading (hooking to the onLoad event doesn't seem to work all the time, and polling for "jQuery" won't work for obvious reasons)? Should I do something else? Thanks.

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  • How to select the previous element of a given class

    - by JCN
    I have an UL list : <ul> <li data-sel='foo'></li> <li></li> <li data-sel='foo'></li> <li class='selected'></li> <li data-sel='foo'></li> </ul> I can access the first previous element of li.selected who do not have attribute data-sel=foo by using :not selector var element = $('.selected').prev("li:not([data-sel='foo'])"); But how can i access the first previous element of li.selected who have attribute data-sel=foo ?

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