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  • Javascript: how to tell if a node object has been inserted into a document yet

    - by thomasrutter
    I'd like to be able to identify whether a given DOM node has been inserted into a document, or part of one, yet, or whether it is fresh out of document.createElement() or similar and has not been placed anywhere. In most browsers just checking the parentNode works. if (!node.parentNode) { // this node is not part of a larger document } However, in Internet Explorer it appears that new elements, even right after they've been created with document.createElement() already have a parentNode object (of type DispHTMLDocument??). Any other nice cross-browser and reliable way?

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  • Javascript/iframe/embed/object question

    - by thinkfuture
    OK, so here is my issue. I'm building a system which will allow people to embed lists of links on their pages. When the link is clicked, i'd like to use something like Lightview or Lightwindow to open it up over the whole window, not just in the iframe. I don't have access to the page that the user will be embedding this object into. Everything I've tried so far tells me that I can't open anything over the parent window, since I don't have access to it from the iframe or object, javacript security issue. However, I've seen sites that do that kind of overlay. so it must be possible. If anyone can point me to any resources that could help, that would be great. if it matters, i'm using Ruby on Rails... Thanks...chris

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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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  • how to set values to combobox dynamically in javascript

    - by Learner
    this is how i set value to a combobox using dwr call, var reportID = '<%=reportid%>'; var reportName = '<%=reportname%>'; loadReportNames(reportUserID); function loadReportNames(reportUserID){ CustomiseReportAction.getReportNames(reportUserID, addReportNamesDropDown); } function addReportNamesDropDown(resultMap){ dwr.util.removeAllOptions("reportnames"); dwr.util.addOptions("reportnames",resultMap); } after loading the combo box i set values to loaded combo like this, document.getElementById("reportnames").value=reportID; but the reportID is not set, what could be the problem please help me to resolve this. UPDATE : function addCombo() { var reportID = '<%=reportid%'; var reportName = '<%=reportname%'; var textb = document.getElementById("reportnames"); var option = document.createElement("option"); option.text = reportName; option.value = reportID; option.selected="selected"; try { textb.add(option, null); //Standard }catch(error) { textb.add(option); // IE only } textb.value = ""; } used above method it gives me no exception but no results. Regards

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  • Loading html dynamically using Javascript and PHP

    - by Vafello
    I have the following code: <?php if ($x == 1){ ?> <b>Some html...</b> <?php } else if ($x==2){ ?> <b> Other html...</b> <?php } ?> Now I would like to have two links below (a href) and somehow pass the variable $x (so Link1 passes x=1 and Link2 passes x=2) in order to load the relevant bit of code from if statement. I know I can pass $x using form and then test its value and load required bit of code, but I would like to do it smoothly, without reloading the page. I think that JQuery could help it, but I have no idea how to do it. Any ideas greatly appreciated.

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  • JavaScript setInterval loop not holding variable

    - by Ryan
    Here is my code: var showNo = 1; window.setInterval(function() { console.log(showNo); if(showNo === 1) { var nextNo = 2; } else if(showNo === 2) { var nextNo = 3; } else if(showNo === 3) { var nextNo = 4; } else if(showNo === 4) { var nextNo = 5; } else if(showNo === 5) { var nextNo = 1; } else { var showNo = 1; var nextNo = 2; } var showNo = nextNo; }, 500); My question is, why is the showNo variable not holding when the setInterval loop starts? The console displays 'undefined' in the above example. This may be a simple question, but I am trying to teach myself query and this has me stuck.. Any answers would be great. Thanks.

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  • How to fix javascript and raphaeljs memory leak?

    - by luc
    Hello all, I have the following code using RapahelJs running in IE. This code cause a memory leak and I don't know what is wrong. Does anybody can help me and give some advices in the usage of raphaeljs and memory leaks. for (i=0; i<2000; i++) { var r = paper.rect(100, 100, 30, 30); r.remove(); r = null; } Thanks in advance

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  • Find consecutive "//" in regex in JavaScript

    - by iOnline247
    I gave it a college try, but I'm stumped. I'm trying to find consecutive slashes within a string. The rest of the regex works great, but the last part I can't quite get. Here's what I have: val.match( /^[\/]|[~"#%&*:<>?\\{|}]|[\/|.]$/ ) and finding this thread, I decided to update my code to no avail: RegEx to find two or more consecutive chars val.match( /^[\/]|[\/]{2,}|[~"#%&*:<>?\\{|}]|[\/|.]$/ ) What do I need to get this thing going?

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  • Javascript substrings multiline replace by RegExp

    - by Radek Šimko
    Hi, I'm having some troubles with matching a regular expression in multi-line string. <script> var str="Welcome to Google!\n"; str = str + "We are proud to announce that Microsoft has \n"; str = str + "one of the worst Web Developers sites in the world."; document.write(str.replace(/.*(microsoft).*/gmi, "$1")); </script> http://jsbin.com/osoli3/3/edit As you may see on the link above, the output of the code looks like this: Welcome to Google! Microsoft one of the worst Web Developers sites in the world. Which means, that the replace() method goes line by line and if there's no match in that line, it returns just the whole line... Even if it has the "m" (multiline) modifier...

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  • Evaluating Javascript Arrays

    - by FailBoy
    I have an array that contains an array of arrays if that makes any sense. so for example: [[1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5, 6]] I want to see whether an array exists withing the array, so if [1, 2, 3] is duplicated at all. I have tried to use the .indexOf method but it does find the duplicate. I have also tried Extjs to loop through the array manually and to evaluate each inner array, this is how I did it: var arrayToSearch = [[1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5, 6]]; var newArray = [1, 2, 3]; Ext.each(arrayToSearch, function(entry, index){ console.log(newArray, entry); if(newArray == entry){ console.log(index); }; }); This also does not detect the duplicate. the console.log will output [1, 2, 3] and [1, 2, 3] but will not recognize them as equal. I have also tried the === evaluator but obviously since == doesn't work the === wont work. I am at wits end, any suggestions.

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  • Retrieving data from enumerated JSON sub arrays in Javascript without getJSON

    - by Archie Ec
    I'm new to JSON and ajax, but i'm trying to access data in an array where the items are enumerated in a sub array within another sub array. So, I can access without issues data.items[0].details.specs.name data.items[0].details.specs.id etc But I run into problems with I try to access something like data.items[0].details.specs[1].name data.items[0].details.specs[1].id data.items[0].details.specs[2].name data.items[0].details.specs[2].id etc Can anyone point me in the right direction on how to access this second aspect? Thanks.

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  • Checkboxes will not check in IE7 using Javascript, and yet no errors

    - by leeand00
    Okay I'm totally confused on this one. I have a script that receives a bunch of values from a JSON object and creates a bunch of checkboxes and either checks or unchecks a these checkboxes based on their values. This script treats me like a woman treats me... "If you don't know what's wrong, then I'm not going to tell you..." The script works correctly in IE8, Firefox3, etc... etc... However... In IE7 the script fails to check off the checkboxes. It displays no errors and from what I can tell, the script runs just fine. I just doesn't check any of the checkboxes, and I don't know why... shoppingCart['Update_Stock_Item_0_NRD%5FHAT2'] = { 'propeller': { 'label' : 'propeller', 'optionValues' : { 'on' : { 'selected': 'selected' }, 'off' : { 'selected': '' }, '' : new String() } }, 'sunLogo': { 'label' : 'sunLogo', 'optionValues' : { 'on' : { 'selected': 'selected' }, 'off' : { 'selected': '' }, '' : new String() } }, 'MSLogo': { 'label' : 'sunLogo', 'optionValues' : { 'on' : { 'selected': 'selected' }, 'off' : { 'selected': '' }, '' : new String() } } }; function stockInit() { alert("BEGIN: stockInit()"); // TODO: You will recieve an "on" and an "off" option, // One will have a "selected" attribute of "selected", // and the other will have a "selected" attribute of "" // // The option that has the "selected" attribute of "" // will generate a checkbox that is not checked. // // The option that has the "selected attribute of "selected" // will generate a checkbox that is checked. // // Why? You ask...because that's just the way the thing is // setup. for(var item in shoppingCart) { // // console.log("processing item: " + item); var optionContainer = document.getElementById(item + "_optionContainer"); for(var option in shoppingCart[item]) { if(option != "blank") { // // console.log("option: " + option); var currentOption = shoppingCart[item][option]['optionValues']; // // console.log("currentOption['on']['selected']: " + currentOption['on']['selected']); // // console.log("currentOption['off']['selected']: " + currentOption['off']['selected']); // Really you only have to check the one, but just to be through-o var selected = (currentOption['on']['selected'] == 'selected') ? true : false; selected = (currentOption['off']['selected'] == 'selected') ? false : true; var label = document.createElement("LABEL"); var labelText = document.createTextNode(shoppingCart[item][option]['label']); var optionInput = document.createElement("INPUT"); var hiddenInput = document.createElement("INPUT"); optionInput.setAttribute("type", "checkbox"); optionInput.checked = selected; optionInput.setAttribute("id", option); alert(optionInput.id); alert(optionInput.checked); hiddenInput.setAttribute("type", "hidden"); hiddenInput.setAttribute("name", option); hiddenInput.setAttribute("id", option + "_hiddenValue"); hiddenInput.setAttribute("value", (optionInput.checked) ? "on" : "off"); label.appendChild(optionInput); label.appendChild(labelText); label.appendChild(hiddenInput); (function(id) { optionInput.onclick = function() { var hiddenInput = document.getElementById(id + "_hiddenValue"); hiddenInput.setAttribute("value", (this.checked == true) ? "on" : "off"); alert("this.id: " + this.id); alert("this.checked: " + this.checked); } })(optionInput.id); optionContainer.appendChild(label); } } // // console.log("processing item of " + item + " complete"); } alert("END: stockInit()"); } And please don't ask why I'm doing things this way...all I can really tell you is that I don't have access to the backend code...so I get what I get...

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  • passing values in array from javascript to html and displaying them

    - by cheesebunz
    I currently have a MapToolKit.html , and two .js files namely map.js and search.js. When i search places like starbucks, they will return me addresses and coordinates stored into an array. I would like to display those multiple values into the html page, not just one value which i currently did it on my coding now. Here's the source code: http://www.mediafire.com/?0minqxgwzmx

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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 Exception/Error Handling Not Working

    - by Seán Hayes
    This might be a little hard to follow. I've got a function inside an object: f_openFRHandler: function(input) { console.debug('f_openFRHandler'); try{ //throw 'foo'; DragDrop.FileChanged(input); //foxyface.window.close(); } catch(e){ console.error(e); jQuery('#foxyface_open_errors').append('<div>Max local storage limit reached, unable to store new images in your browser. Please remove some images and try again.</div>'); } }, inside the try block it calls: this.FileChanged = function(input) { // FileUploadManager.addFileInput(input); console.debug(input); var files = input.files; for (var i = 0; i < files.length; i++) { var file = files[i]; if (!file.type.match(/image.*/)) continue; var reader = new FileReader(); reader.onload = (function(f, isLast) { return function(e) { if (files.length == 1) { LocalStorageManager.addImage(f.name, e.target.result, false, true); LocalStorageManager.loadCurrentImage(); //foxyface.window.close(); } else { FileUploadManager.addFileData(f, e.target.result); // add multiple files to list if (isLast) setTimeout(function() { LocalStorageManager.loadCurrentImage() },100); } }; })(file, i == files.length - 1); reader.readAsDataURL(file); } return true; LocalStorageManager.addImage calls: this.setItem = function(data){ localStorage.setItem('ImageStore', $.json_encode(data)); } localStorage.setItem throws an error if too much local storage has been used. I want to catch that error in f_openFRHandler (first code sample), but it's being sent to the error console instead of the catch block. I tried the following code in my Firebug console to make sure I'm not crazy and it works as expected despite many levels of function nesting: try{ (function(){ (function(){ throw 'foo' })() })() } catch(e){ console.debug(e) } Any ideas?

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  • Call a c# method from Javascript

    - by Luis
    Hi i want to call a C# method.. I already tryed with webmethod, but in the c# method i will not have acces to textbox or others controls. this is how i done without success.. http://www.singingeels.com/Articles/Using_Page_Methods_in_ASPNET_AJAX.aspx With static works, but i want without static, so i can access to the controls in the aspx and validate the page. how can i do it?

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  • Javascript Redirect to another page

    - by FearUs
    is there any way to do a redirect other than: document.location = url document.location.href = url document.location.replace = url window.location = url window.location.href = url window.location.replace = url ????? I really want to redirect a user to another page just like if he clicked on a hyperlink !!

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  • delete row from result set in web sql with javascript

    - by Kaijin
    I understand that the result set from web sql isn't quite an array, more of an object? I'm cycling through a result set and to speed things up I'd like to remove a row once it's been found. I've tried "delete" and "splice", the former does nothing and the latter throws an error. Here's a piece of what I'm trying to do, notice the delete on line 18: function selectFromReverse(reverseRay,suggRay){ var reverseString = reverseRay.toString(); db.transaction(function (tx) { tx.executeSql('SELECT votecount, comboid FROM counterCombos WHERE comboid IN ('+reverseString+') AND votecount>0', [], function(tx, results){ processSelectFromReverse(results,suggRay); }); }, function(){onError}); } function processSelectFromReverse(results,suggRay){ var i = suggRay.length; while(i--){ var j = results.rows.length; while(j--){ console.log('searching'); var found = 0; if(suggRay[i].reverse == results.rows.item(j).comboid){ delete results.rows.item(j); console.log('found'); found++; break; } } if(found == 0){ console.log('lost'); } } }

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