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  • Find Line Above or Below in Javascript

    - by Dark Falcon
    I am working on an in-place HTML editor, concentrating on Firefox only right now. I have an element inserted where the cursor should be and also have left and right arrows working, but I can't seem to find a way to find: Start and end of a line for the home and end keys The next line up or down for the up/down arrows. I see document.elementFromPoint, but this doesn't get me a Range object. The Range object itself seems rather useless when it comes to using pixel positions.

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  • execute javascript method after completing code behind method ?

    - by James123
    I can execute below callback() method after completion of document.getElementById('btnDownload').click(); .This Click is Code behind method. Now it is executing immediatly. I want wait "Click()" process done then Execute callback(); method. function LoadPopup() { // find the popup behavior this._popup = $find('mdlPopup'); // show the popup this._popup.show(); // synchronously run the server side validation ... document.getElementById('btnDownload').click(); callback(); } function callback() { this._popup = $find('mdlPopup'); // hide the popup this._popup.hide(); alert("hi"); }

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  • How to update document object value in loop (Javascript)

    - by Graham
    Hi folks i am a beginer to Java script so appologies if this is a dumb question. I am trying to put the following in a for loop but I can't seem to get it to work. if (rowID==1) { document.form1.class_titleDis_1.value=class_title; } if (rowID==2) { document.form1.class_titleDis_2.value=class_title; } This is what I tried var i=1; for (i=1;i<=2;i++) { document.form1.(class_titleDis_)+i.value=class_title; } I would be really grateful for any suggestions. Graham

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  • Scoping inside Javascript anonymous functions

    - by DCD
    I am trying to make a function return data from an ajax call that I can then use. The issue is the function itself is called by many objects, e.g.: function ajax_submit (obj) { var id = $(obj).attr('id'); var message = escape ($("#"+id+" .s_post").val ()); var submit_string = "action=post_message&message="+message; $.ajax({ type: "POST", url: document.location, data: submit_string, success: function(html, obj) { alert (html); } }); return false; } Which means that inside the anonymous 'success' function I have no way of knowing what the calling obj (or id) actually are. The only way I can think of doing it is to attach id to document but that just seems a bit too crude. Is there another way of doing this?

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  • JQuery or javascript to find memory usage of page

    - by Tauren
    Is there a way to find out how much memory is being used by a web page, or by my jquery application? Here's my situation: I'm building a data heavy webapp using a jquery frontend and a restful backend that serves data in JSON. The page is loaded once, and then everything happens via ajax. The UI provides users with a way to create multiple tabs within the UI, and each tab can contain lots and lots of data. I'm considering limiting the number of tabs they can create, but was thinking it would be nice to only limit them once memory usage has gone above a certain threshold.

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  • javascript setTimeout function out of scope.

    - by Keyo
    I am trying to call showUpload(); from within two setTimeouts. Neither works. It seems to be out of scope and I'm not sure why. I tried this.showUpload() which didn't work either. $(document).ready(function(){ var progress_key = $('#progress_key').val(); // this sets up the progress bar $('#uploadform').submit(function() { setTimeout("showUpload()",1500); $("#progressbar").progressbar({ value:0}).fadeIn(); }); // uses ajax to poll the uploadprogress.php page with the id // deserializes the json string, and computes the percentage (integer) // update the jQuery progress bar // sets a timer for the next poll in 750ms function showUpload() { $.get("/myid/videos/uploadprogress/" + progress_key, function(data) { if (!data) return; var response; eval ("response = " + data); if (!response) return; var percentage = Math.floor(100 * parseInt(response['bytes_uploaded']) / parseInt(response['bytes_total'])); $("#progressbar").progressbar({ value:percentage}) }); setTimeout("showUpload()", 750); } }); Thank you for your time.

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  • simplfy javascript code using regex

    - by Pradyut Bhattacharya
    Hi I have a code which can show youtube videos if there are any links to youtube in the text like for example the text example at:- pradyut.dyndns.org http://www.youtube.com/watch?v=-LiPMxFBLZY testing http://www.youtube.com/watch?v=Q3-l22b_Qg8&feature=related this text i m forwarding to the function... function to_youtubelink(text) { if ( text.indexOf ('<') > 0 || text.indexOf ('"') > 0 || text.indexOf ('>') > 0 ) return text; else { var obj_text = new Array(); var oi = 0; while(text.indexOf('http://') >=0) { //getting the paths var si = text.indexOf('http://'); var gr = text.indexOf('\n', si); var sp = text.indexOf(' ', si); var ei; if ( gr > 0 || sp > 0 ) { if ( gr >0 && sp > 0 ) { if ( gr < sp ) { ei = gr ; } else { ei = sp ; } } else if ( gr > 0) { ei = gr; } else { ei = sp; } } else { ei = text.length; } var it = text.substring(si,ei); if ( it.indexOf('"') > 0) { it.substring(0, it.indexOf('"') ); } if(ei < 0) ei = text.length; else ei = text.indexOf(' ', si) ; obj_text[oi] = it; text = text.replace( it, '[link_service]'); oi++; } var ob_text = new Array(); var ob =0; for (oi=0; oi<obj_text.length; oi++) { if ( is_youtubelink( obj_text[oi] ) ) { ob_text[ob] = to_utubelink(obj_text[oi]); ob++; } } oi = 0; while ( text.indexOf('[link_service]') >=0 ) { text = text.replace( '[link_service]', obj_text[oi]); oi ++; } for (ob=0; ob<ob_text.length; ob++) { text = text +"\n\n" + ob_text[ob]; } return text; } } function is_youtubelink(text) { var matches = text.match(/http:\/\/(?:www\.)?youtube.*watch\?v=([a-zA-Z0-9\-_]+)/); if (matches) { return true; } else { return false; } } function to_utubelink(text) { var video_id = text.split('v=')[1]; var ampersandPosition = video_id.indexOf('&'); if(ampersandPosition != -1) { video_id = video_id.substring(0, ampersandPosition); } text = "<iframe title=\"YouTube video player\" class=\"youtube-player\" type=\"text/html\" width=\"425\" height=\"350\" src=\"http://www.youtube.com/embed/" + video_id + "\" frameborder=\"0\"></iframe>" return text; } now i m getting the output properly... but i was thinking if the code could be done better and simplified using regex ...especially getting the urls part... thanks

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  • Javascript onunload form submit isn't submitting data

    - by Kevin
    I currently have form that checks if a user has unsubmitted changes when they leave the page with a function called through the onunload event. Here's the function: function saveOnExit() { var answer = confirm("You are about to leave the page. All unsaved work will be lost. Would you like to save now?"); if (answer) { document.main_form.submit(); } } And here's the form: <body onunload="saveOnExit()"> <form name="main_form" id="main_form" method="post" action="submit.php" onsubmit="saveScroll()"> <textarea name="comments"></textarea> <input type="submit" name="submit2" value="Submit!"/> </form> I'm not sure what I'm doing wrong here. The data gets submitted and saved in my database if I just press the submit button for the form. However, trying to submit the form through the onunload event doesn't result in anything being stored, from what I can tell. I've tried adding onclick alerts to the submitt button and onsubmit alerts to the form elements and I can verify that the submit button is being triggered and that the form does get submitted. However, nothing gets passed stored in the database. Any ideas as to what I'm doing wrong? Thanks.

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  • Determining which JavaScript/CSS browser features are required

    - by Alan Neal
    My website uses a variety of technologies, such as JQuery, new CSS definitions (e.g., moz-selection, -webkit-user-select), etc. The site works perfectly with Google Chrome and Safari, but has some quirkiness in Firefox, IE, and some of the other browsers. I want to write a script to check for necessary browser features but, with several thousand lines of code and CSS definitions, I'm not certain which features I should be looking for. Is there some sort of online analysis (similar to how JSLint operates) that would tell me which features my script and CSS files need? Are there tools (like FireBug) that provide this info?

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  • How to resize table via javascript in IE?

    - by MartyIX
    I've got this table: <table id="correctness" style="overflow: hidden;"> <tr><td style="overflow: hidden;"> <div id="correctness-message"></div> <span class="hide"> <button type="button" class="hide" onclick="new DisplayEffect('correctness').Hide(500);">Hide</button> </span> </td> </tr> </table> and a function for resizing the table: function resize(element, size) { element.style.height = size + "px";}; which is called for a certain amount of time (e.g. 1 second) with the ID of table (i.e. "correctness") in order to resize the table from zero height to its full height. This code works in Firefox and Chrome but it doesn't work in IE8. What it does is that it displays right away whole table even thought the height set in "resize" method is much lower. It seems that the cell sets the height of parent table and not the other way around. Is it possible to change the behaviour? I like changing the height of the table better because I can set visibility of the table easily. Thanks for any help!

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  • IE8 is subtracting wrong in JavaScript / jQuery?

    - by Oscar Godson
    In every browser, Win/Mac, Chrome, Safari, Firefox, Opera, IE6, and IE7 they ALL get the following console output: 352 254 But in IE8 I get: 414 434 454 474 Here is my JS/jQuery code: $('#top-breadcrumbs').children('a').each(function(i){ if(!$(this).hasClass('permanent')){ if(permItemWidth+rmItemWidth > $('#top-breadcrumbs').width()){ $(this).addClass('removed'); rmItemWidth = rmItemWidth-$(this).width()+20; } } }); The log code i have above is writing the NEW rmItemWidth value after its been reset in that 2nd if

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  • Storing DOM reference elements in a Javascript array

    - by webzide
    Dear experts, I was trying to dynamically generate DOM elements using JS. I read from Douglas Crockford's book that DOM is very very poorly structured. Anyways, I would like to create a number of DIVISION elements and store the reference into an array so it could be accessed later. Here's the code for(i=0;i<3;i++){ var div=document.body.appendChild(document.createElement("div")); var arr=new Array(); arr.push(div); } Somehow this would not work..... There is only 1 div element created. When I use the arr.length to test the code there is only 1 element in the array. Is there another way to accomplish this? Thanks in advance

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  • How to check for empty values on two fields then prompt user of error using javascript

    - by Matthew
    Hello guys, I hope I can explain this right I have two input fields that require a price to be entered into them in order for donation to go through and submit. The problem that I am having is that I would like the validation process check to see if one of the two fields has a value if so then proceed to submit. If both fields are empty then alert. This is what I have in place now: function validate_required(field,alerttxt) { with (field) { if (value==null||value=="") {alert(alerttxt);return false;} else {return true} } } function validate_form(thisform) { with (thisform) { if (validate_required(input1,"Need a donation amount to continue")==false) {input1.focus();return false;} else if (validate_required(input2,"Need a donation amount to continue")==false) {input2.focus();return false;} } } I would like to ultimately like to get this over to Jquery as well Thanks guys any help would do Matt

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  • Javascript crash / Ajax in IE after 5 times

    - by snarebold
    Hi Please give a look at this site. maimei.ch After 5 times opening a new site via ajax (fancybox) it crashes in IE? One little thing is that i load a whole asp.net site via ajax in the new window. so viewstate and other overhead is there twice after. could this be the problem? if yes, why just after 5 times?. is it possible to call just the content of an specific element via ajax? may be just the innerhtml of the body element of the called site? Thank you and best regards

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  • JavaScript: count minimal length of characters in text, ignoring special codes inside

    - by ilnur777
    I want to ignore counting the length of characters in the text if there are special codes inside in textarea. I mean not to count the special codes characters in the text. I use special codes to define inputing smileys in the text. I want to count only the length of the text ignoring special code. Here is my approximate code I tried to write, but can't let it work: // smileys // ======= function smileys(){ var smile = new Array(); smile[0] = "[:rolleyes:]"; smile[1] = "[:D]"; smile[2] = "[:blink:]"; smile[3] = "[:unsure:]"; smile[4] = "[8)]"; smile[5] = "[:-x]"; return(smile); } // symbols length limitation // ========================= function minSymbols(field){ var get_smile = smileys(); var text = field.value; for(var i=0; i<get_smile.length; i++){ for(var j=0; j<(text.length); j++){ if(get_smile[i]==text[j]){ text = field.value.replace(get_smile[i],""); } } } if(text.length < 50){ document.getElementById("saveB").disabled=true; } else { document.getElementById("saveB").disabled=false; } } How the script should be in order to let it work? Thank you!

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  • Using a Javascript Variable & Sending to JSON

    - by D Franks
    Hello all! I'm trying to take a URL's hash value, send it through a function, turn that value into an object, but ultimately send the value to JSON. I have the following setup: function content(cur){ var mycur = $H(cur); var pars = "p="+mycur.toJSON(); new Ajax.Updater('my_box', 'test.php', { parameters: pars }); } function update(){ if(window.location.hash.length > 0){ content(window.location.hash.substr(1)); // Everything after the '#' } } var curHashVal = window.location.hash; window.onload = function(){ setInterval(function(){ if(curHashVal != window.location.hash){ update(); curHashVal = window.location.hash; } },1); } But for some reason, I can't seem to get the right JSON output. It will either return as a very large object (1:"{",2:"k") or not return at all. I doubt that it is impossible to accomplish, but I've exhausted most of the ways I can think of. Other ways I've tried were "{" + cur + "}" as well as cur.toObject(), however, none seemed to get the job done. Thanks for the help!

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  • Is it possible to capture mouse events on a scroll bar in JavaScript

    - by Nathan
    I have an HTML element with overflow: scroll. The click event listener registered with the element is triggered when I click on the element, but not when I click on the scroll bar for the element. Is it possible to capture mouse events which occur on an HTML element's scroll bar? The reason I want to do this is to make a visual popup element disappear when ever a click event occurs anywhere outside the popup element.

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  • Detect IE version in Javascript

    - by Chad Decker
    I want to bounce users of our web site to an error page if they're using a version of Internet Explorer prior to v9. It's just not worth our time and money to support IE pre-v9. Users of all other non-IE browsers are fine and shouldn't be bounced. Here's the proposed code: if(navigator.appName.indexOf("Internet Explorer")!=-1){ //yeah, he's using IE var badBrowser=( navigator.appVersion.indexOf("MSIE 9")==-1 && //v9 is ok navigator.appVersion.indexOf("MSIE 1")==-1 //v10, 11, 12, etc. is fine too ); if(badBrowser){ // navigate to error page } } Will this code do the trick? To head off a few comments that will probably be coming my way: [1] Yes, I know that users can forge their useragent string. I'm not concerned. [2] Yes, I know that programming pros prefer sniffing out feature-support instead of browser-type but I don't feel this approach makes sense in this case. I already know that all (relevant) non-IE browsers support the features that I need and that all pre-v9 IE browsers don't. Checking feature by feature throughout the site would be a waste. [3] Yes, I know that someone trying to access the site using IE v1 (or = 20) wouldn't get 'badBrowser' set to true and the warning page wouldn't be displayed properly. That's a risk we're willing to take. [4] Yes, I know that Microsoft has "conditional comments" that can be used for precise browser version detection. IE no longer supports conditional comments as of IE 10, rendering this approach absolutely useless. Any other obvious issues to be aware of? Thanks.

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  • Iterating thorough JSON with jQuery/Javascript

    - by Aaron Salazar
    I am trying to fill a table with JSON data. When I run the following script I get only the last entry of 10. I must have to do some sort of .append() or something. I've tried to put this in but it just returns nothing. $(function() { $('#ReportedIssue').change(function() { $.getJSON('/CurReport/GetUpdatedTableResults', function(json) { //alert(json.GetDocumentResults.length); for (var i = 0; i < json.GetDocumentResults.length; i++) { $('#DocumentInfoTable').html( "<tr>" + "<td>" + json.GetDocumentResults[i].Document.DocumentId + "</td>" + "<td>" + json.GetDocumentResults[i].Document.LanguageCode + "</td>" + "<td>" + json.GetDocumentResults[i].ReportedIssue + "</td>" + "<td>" + json.GetDocumentResults[i].PageNumber + "</td>" + "</tr>" ) }; }); }); }); Thank you, Aaron

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  • javascript replace div tags for p tags where it has no class

    - by Tom
    I would like to replace div tags for p tags but only when the div tag does not have a class. So this: <div class="myDiv"> <div>sdfglkhj sdfgkhl sdfkhgl sdf</div> <div>dsf osdfghjksdfg hsdfg</div> </div> Would become: <div class="myDiv"> <p>sdfglkhj sdfgkhl sdfkhgl sdf</p> <p>dsf osdfghjksdfg hsdfg</p> </div> I've tried .replace("<div>", "<p>").replace("</div>","</p>") but this replaces the closing tag of the one with a class.

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  • Javascript: addClassName if input is checked and removeClassName if it was un-checked

    - by BoDiE2003
    Im trying to select all the li tags of the document and check if it hasClassName('yes') so if it has, it will remove it. But im having a TypeError: Object [object HTMLLIElement], has no method 'hasClassName' error. This is the DOM method: document.observe("dom:loaded", function() { $(document.body).select('input').each(function(element) { element.observe('click', function() { init(); }); init(); }); }); The previous code will take the init fuction and check the if there are checked inputs and add them the 'yes' class name, but if I un-check those inputs, the class remains. This is the funcion that Im trying to do dynamic (add and remove class 'yes'); function init() { $(document.body).select('input').each(function(element) { if (element.checked) { element.up('li').addClassName('yes'); } if ($(document.body).select('li').hasClassName('yes')) { element.removeClassName('yes'); } }) } Can you help me solving the last part of this function, so the removeclassname method will work? Thank you

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