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  • Sanitizing usser input before adding it to the DOM in Javascript

    - by I GIVE TERRIBLE ADVICE
    I'm writing the JS for a chat appication I'm working on in my free time, and I need to have HTML identifiers that change according to user submitted data. This is usually something conceptually shaky enough that I would not even attempt it, but I don't see myself having much of a choice this time. What I need to do then is to escape the HTML id to make sure it won't allow for XSS or breaking HTML. Here's the code: var user_id = escape(id) var txt = '<div class="chut">'+ '<div class="log" id="chut_'+user_id+'"></div>'+ '<textarea id="chut_'+user_id+'_msg"></textarea>'+ '<label for="chut_'+user_id+'_to">To:</label>'+ '<input type="text" id="chut_'+user_id+'_to" value='+user_id+' readonly="readonly" />'+ '<input type="submit" id="chut_'+user_id+'_send" value="Message"/>'+ '</div>'; What would be the best way to escape id to avoid any kind of problem mentioned above? As you can see, right now I'm using the built-in escape() function, but I'm not sure of how good this is supposed to be compared to other alternatives. I'm mostly used to sanitizing input before it goes in a text node, not an id itself.

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  • jQuery/Javascript problem with IE

    - by Shadyn
    I have two radio buttons each with a unique ID. When one is clicked, I would like to add $10 to a total. When the other is clicked, we go back to the original total price. My jquery looks like this: function check_ceu() { var price = <%= conference_price %>; if($('#ceu_yes').is(':checked')){ $('#total').val(parseFloat(price) + 10) } else{ $('#total').val(price) } } I have this function bound to document.ready (for page refreshes) and also the onchange handler of the radio buttons. In FF and Chrome this works fine. In IE, when the radio button with ID of "ceu_yes" is checked nothing happens, then when clicking back to the other radio button, 10 is added. So in essence, IE has the checkbox functionality reversed. Below is my code for the buttons: <input type="radio" name="ceu" id="ceu_yes" value="1" onchange="check_ceu()" /> $10 <input type="radio" name="ceu" id="ceu_no" value="0" checked="checked" onchange="check_ceu()" /> No, thank you Any ideas on this?

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  • JavaScript: add or subtract from number in string

    - by yoavf
    I have a string that looks like "(3) New stuff" where 3 can be any number. I would like to add or subtract to this number. I figured out the following way: var thenumber = string.match((/\d+/)); thenumber++; string = string.replace(/\(\d+\)/ ,'('+ thenumber +')'); Is there a more elegant way to do it?

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  • Linking javascript BASEDIR

    - by Azzyh
    Hello. So continue from this: http://stackoverflow.com/questions/2715295/linking-how-php-html Please check the answer i accepted, and i used the "BASEDIR" solution zneak came with. Now i ran onto another problem.. in my ajax_framework.js i have: $.ajax({url: "session.php", success: function(data){ how should i include BASEDIR onto this? i was thinking something about: $.ajax({url: "'.BASEDIR.'session.php", success: function(data){ but this isnt PHP, so i think you cant? no? any help or maybe another method to come around this?

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  • traverse a string char by char javascript

    - by mikeandike
    function SimpleSymbols(str) { var letter =['a','b','c','d','e','f','g','h','i','j', 'k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']; var newstr = ""; for (var i = 0; i<str.length; i++){ if (str.charAt(i).toLowerCase() in letter){ newstr += "M"; } else{ newstr += "X"; } } return newstr; } If str is "Argument goes here" it returns XXXXXXXXX. WHy doesn't it return MMMMMMMMMM?

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  • remove item from array javascript

    - by Red
    I was trying to remove some items from an array , Array.prototype.remove = function(from, to) { var rest = this.slice((to || from) + 1 || this.length); this.length = from < 0 ? this.length + from : from; return this.push.apply(this, rest); }; var BOM = [0,1,0,1,0,1,1]; var bomlength = BOM.length; for(var i = 0; i < IDLEN ;++i) { if( BOM[i] == 1) { BOM.remove(i); //IDLEN--; } } RESULT IS BOM = [0,0,0,1]; expected result is BOM = [0,0,0]; its looks like i am doing something wrong , Please help me. Thanks.

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  • Finding all properties of a javascript class

    - by uzay95
    I have classes looks like below: function Student(name, surname, lossons){ this.Name = name; this.Surname = surname; this.Lessons = lessons; } function Lesson(){ this.Name = name; this.studentCount = count; } And i want to write ToString method to them. But i don't want to write and add them one by one. Is there any way to do this like reflection in C# or Java ? Any help would be appreciated...

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  • Javascript Function wont submit form..

    - by Josh K
    Here is my function: function processCheck() { var numberClicked = 0; var frm = document.getElementById('form'); for (var i=0; i<form.elements.length; i++) { if (frm.elements[i].checked) numberClicked++; } if(numberClicked != 8) alert('Must choose 8 Teams'); else frm.submit(); } My forms name is 'form', here is my input: echo "<input type='button' name='submit' value='Update' onclick='processCheck()' />"; When i click the button and there is anything but 8 boxes selected it displays the alert, if there is 8 boxes it does nothing (<-- The problem). I have the form action set to another page.

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  • Javascript adding two numbers incorrectly

    - by Scott
    Global.alert("base: " + base + ", upfront: " + upfront + ", both: " + (base + upfront)); This code above outputs this: base: 15000, upfront: 36, both: 1500036 Why is it joining the two numbers instead of adding them up? I eventually want to set the value of another field to this amount using this: mainPanel.feesPanel.initialLoanAmount.setValue(Ext.util.Format.number((base + upfront), '$0,000.00')); ...and when I try that now it turns the number into the millions instead of 15,036.00. I have no idea why. Any ideas?

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  • asp.net-mvc: javascript caching

    - by Omu
    I'm thinking whether it makes sense in order to increase the speed of the website to do some strategy of caching the js files that are being included ? one idea that I have is to do something like this: [OutputCache(Location = OutputCacheLocation.Any, Duration = 3600)] public JsController : Controller public ActionResult JQuery() { //I would have a ascx with the entire jquery script inside return View(); } and on the site.master: <%=Html.RenderAction("JQuery","JsController");

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  • PHP echo in Javascript

    - by DonCroce
    I have this code: document.getElementById('root').style.left = '<?php echo $page_position[$info["os"]][$info["browser"]][0]; ?>'; document.getElementById('root').style.top = '<?php echo $page_position[$info["os"]][$info["browser"]][1]; ?>'; Why won't this work like this? Can anybody point me in the right direction? EDIT: <?php echo $page_position[$info["os"]][$info["browser"]][1]; ?> echoed "top:300px;" Sorry guys, very stupid error of mine :/

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  • Odd toString behavior in javascript

    - by George
    I have this small function that's behaving oddly to me. Easy enough to work around, but enough to pique my curiosity. function formatNumber(number,style) { if (typeof style == 'number') { style = style.toString(); } return (number).format(style); } The return format part is based on another function that requires the style variable to be a string to work properly, so I'm just checking if style is a number and if it is to convert it to a string. When the function above is written as is, the format function format doesn't work properly. However when I write it as simply: return (number).format(style.toString()); Everything works. Is there a difference between putting the .toString function inside the format call vs performing it before hand and setting it as the variable style?

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  • javascript Refresh Div.

    - by Tom
    Hi, I am using this code to refresh the data inside of the div: <script> $(function() { $("#refresh").click(function() { $("#new").load("/new.php") }) }) </script> Except it loads the who page inside of the div, instead of just the information that is inside of the div. How do I make it refresh only the data that is inside of the div? Is there a way of doing it other than putting the information for that div in a seperate page?

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  • Getting the "unmodified" HTML document from Javascript

    - by chris_l
    Is it possible to get the source of the current HTML document, exactly as it was loaded, in text form? (i.e. not the "Generated source" after parsing and DOM manipulation.) Note: Issuing an extra AJAX request to retrieve the HTML page again is not an option in this case: The document could have changed.

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  • send name="" in jquery javascript?

    - by Azzyh
    Hello So i have this: yes: <input type="radio" value="Y" id="SCvoteY" name="vote"></input> no: <input type="radio" id="SCvoteN" value="N" name="vote"> </input> How do i write that it should transfer name="vote" data ? #vote doesnt work, .vote either (guess it cause thats for class and ID) but what about name then? function DoSCInsert(){ $("#SCres").html("please wait.."); var nocache = '0'; var data = { fID : $("#fID").val(), vote : $("#vote").val(), comment: $("#comment").val(), nocache: nocache }; $.get('insertSC.php', data, onSCInsertComplete); } And how do i shorten this, ive heard that you can you a function in jquery called serialize to pass strings but can you(if you know how) show example by this script how to pass it like this one does?

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  • [Javascript] Split string by HTML entities?

    - by user366124
    Hello, My string contain a lot of HTML entities, like this &#x22;Hello&nbsp;&lt;everybody&gt;&#x22;&nbsp;there And I want to split it by HTML entities into this : Hello everybody there Can anybody suggest me a way to do this please? May be using Regex? Thanks so much.

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