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  • JavaScript sorting array from nested array?

    - by Tim
    I have an array: letterFrequency = [["a", 12], ["b", 25], ["c", 34], ["d", 1], ["e", 35], ["f", 8], ["g", 7], ["h", 67], ["i", 35], ["j", 0], ["k", 53], ["l", 0], ["m", 0], ["n", 3], ["o", 0], ["p", 0], ["q", 3], ["r", 153], ["s", 0], ["t", 0], ["u", 15], ["v", 0], ["w", 0], ["x", 3], ["y", 0], ["z", 0]] and I want to sort it in descending order based on the number within the nested array i.e. letterFrequency[i][1]. So I want the most popular letter to be first. How would I do this?

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  • Pre-loading external files (CSS, JavaScript) for other pages

    - by Jason Young
    I'm curious if there is an efficient way to wait for the front page of a site to load, and then pre-load CSS and script files that I know will likely be needed for the other pages on the site. I want the front page of the site to be as fast as possible (lean and mean). It's likely that the user will not immediately click on a link. Since there will likely be some idle time, this seems like an opportune time to pre-load some of the external assets. Pre-loading should cause them to become cached. When the user does click on another page, the only request needed will be for the content and possibly some images, etc. Has anyone done this? Is it a bad idea? Is there an elegant way to implement it?

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  • Javascript Click/Drag and Select Table rows and columns

    - by Eric V
    Hi, I am wondering if anyone knows a java script library that would add a "select" type of functionality as seen in excel/google docs where you can click and select several different parts of a row and/or column. I am looking at adding this functionality to my web application. Does anyone know where of library's preferably in java script that will be able to add this. Thanks in advance

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  • how does an object knows about its parent in javascript

    - by alter
    Lets suppose I made a class called Person. var Person = function(fname){this.fname = fname;}; pObj is the object I made from this class. var pObj = new Person('top'); now I add one property to Person class, say lname. Person.prototype.lname = "Thomsom"; now pObj.lname gets me "Thomson". My question is that, when pObj didn't find the property lname in it, how does it know where to look for.

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  • populate array fron list onclick javascript

    - by user3703591
    I 'm writing a code with JS and I don't know how to populate array when clicking on button. We have this code, which uses a list (ul), where the items (li) can be moved with mouse. How can do onclick to populate an array with 2 data, its first position and the last position? <!doctype html> <html lang="en"> <head> <script src="http://code.jquery.com/jquery-1.9.1.js"></script> <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script> <script src="https://raw.github.com/furf/jquery-ui-touch-punch/master/jquery.ui.touch-punch.min.js"></script> <script> $(function() { $( ".documents" ).sortable(); $( ".documents" ).disableSelection(); }); </script> <meta charset="utf-8"> <title>toArray demo</title> <style> span { color: red; } </style> </head> <body> Reversed - <span></span> <ul id="opciones" class="documents"> <li>uno</li> <li>dos</li> <li>tres</li> </ul> <script> function disp( li ) { var a = []; for ( var i = 0; i < li.length; i++ ) { a.push( li[ i ].innerHTML ); } $( "span" ).text( a.join( " " ) ); } disp( $( "li" ).toArray() ); </script> <input type="button" value="actualizar_array" onclick="disp('#opciones')" /> </body> </html>

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  • Live clock javascript starts from my custom time

    - by newworroo
    I was trying to create a live/dynamic clock is based on my custom time instead of system time. There are many scripts, but I couldn't find the clock starts from my custom time. Here is an example that I'm trying to modify. The problem is the seconds doesn't change, and it looks like I need to use ajax. Is there any way to do it without ajax? If not, help me to do it using ajax!!! The reason I don't like ajax method is that another page should be called and refreshed, so it will eat server ram. ex) http://www.javascriptkit.com/script/cut2.shtml Before: <script> function show(){ var Digital=new Date() var hours=Digital.getHours() var minutes=Digital.getMinutes() var seconds=Digital.getSeconds() ... ... After: <script> function show(){ var Digital=new Date() var hours=<?php echo $hr; ?>; var minutes=<?php echo $min; ?>; var seconds=<?php echo $sec; ?>; ... ...

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  • Adding images to the html with javascript

    - by Anonymous
    I've tried some HTML DOM code from several sites, but it isn't working. It isn't adding anything. Does anyone have a working example on this? this.img = document.createElement("img"); this.img.src = "img/eqp/"+this.apparel+"/"+this.facing+"_idle.png"; src = getElementById("gamediv"); src.appendChild(this.img) But it isn't adding anything to the div. (gamediv) I've tried document.body as well, with no result. Thanks in advance.

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  • Asign Id's dynamically to DOM elements with javascript.

    - by jnkrois
    Hello everybody, I just have a quick question about how to generate id's on-the-fly for HTML elements. So far I've tried a few things, I started with a "for" loop, I already know how many elements I have to generate Id's for, in this case I have an "ul" with 6 "li". My "for" loop is as follows: var items = $("ul li").length; for(var i = 0; i <= items; i++){ $("ul li").attr("id", "number" + i); } "number" would be the new id concatenated with "i", so I get a different Id for each "li". As you can probably tell, this does not work, because I end up with the same Id for each "li": in this case I get <li id="number6">... </li> for all the "li" elments in the "ul". I tried a "while" loop and ".each()" with jQuery but I get the exact same thing. Any help would be appreciated.

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  • Set hidden form field values with JavaScript but request still empty

    - by tigerstyle
    HI volks, I try to set some hidden form field values with an onclick event. Ok, after I did something like this: document.getElementById('hidden_field').value = 123; I can output the value with the firebug console by entering this: alert(document.getElementById('hidden_field').value); So the values are definitely set. But now when I submit the form, the hidden field values are still empty. Do you have any idea whats going wrong? Thx for your answers.

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  • creating button and calling function on its onclick event using javascript

    - by Deven
    hello friends sorry for previous question actuly my question is i am having one button called btn[0] which is allready on browser when it is loaded when i click on btn[0] it will create another button element called btn[1] now btn[0]'s click event is disabled and when i click on btn[1] it will also generate another button which called btn[2] when i click on btn[2] it will generate another btn called btn[3] and so on

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  • Javascript: find array by name

    - by Kin
    Hi, I have some js arrays and I want to find the arrays by name. for example: arr1 = [1,2,3]; arr2 = [3,4,5]; And access them like this: var intNum = 2; var arrName = 'arr' + intNum; arrName[0]; // equals 3 Is this possible? Thanks, Kevin

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  • Javascript ( jQuery ) Error: SyntaxError: missing ) after argument list

    - by Obmerk Kronen
    I have the simplest function : jQuery(document).ajaxSuccess(function(e, xhr, settings) { var widget_id_base = '099_cf_samurai_widget'; if(settings.data.search('action=save-widget') != -1 && settings.data.search('id_base=' + widget_id_base) != -1) { // alert(\'yay!'\); my_function_chosen_099(); } }); function my_function_chosen_099(){ jQuery(".chzn-select").chosen(); } which works just fine , but When I add the width Parameter like so : function my_function_chosen_k99(){ jQuery(".chzn-select").chosen(width:'95%'); } it gives me an error of: Error: SyntaxError: missing ) after argument list Source File: http://localhost/my-path/js/o99.chosen.init.js?ver=k99 Line: 20, Column: 41 Source Code: jQuery(".chzn-select").chosen(width:"95%"); .............................................| I have tried escaping: jQuery(".chzn-select").chosen(width:\"95%"\); and even double jQuery(".chzn-select").chosen(width:\\"95%"\\); and in my desperation, even jQuery(".chzn-select").chosen( width:"95%" ); I checked and rechecked the closing of brackets , and also tried with single quotes ' - but nothing . There appear to be a lot of similar questions here , but all I saw was escaping problems, ANd I have tried all that I know .. What is wrong here ?? I assume it is not a simple syntax error - or is it ? ( one which I can not find .. )

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  • Javascript How do I force a string + variable to be evaluated as a variable

    - by Craig Rinde
    Im not even sure how to word this and is probably why I am having trouble finding an answer in google. When the code is run currentCardRow will equal 1 therefore it should be cardSelected1 which is what is shown in the console.log. I need it to go a step further because cardSelected1 is a variable and I need it to evaluate show in the console log as Invitation. Invitation is an example of a variable for cardSelected1. I am not sure on what the correct syntax is to make this happen. var currentCardSelected = "cardSelected" + currentCardRow; Thanks for your help!

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  • Javascript syntax error

    - by Mel
    Hello, I'm wondering if anyone can help me with a syntax error in line 14 of this code: The debugger says expected ')' after argument list on var json = eval('(' + content ')'); I tried adding a bracket, but it doesn't seem to be working. // Tooltips for index.cfm $(document).ready(function() { $('#catalog a[href]').each(function() { $(this).qtip( { content: { url: 'components/viewgames.cfc?method=fGameDetails', data: { gameID: $(this).attr('href').match(/gameID=([0-9]+)$/)[1] }, method: 'get' }, api: { beforeContentUpdate: function(content) { var json = eval('(' + content ')'); content = $('<div />').append( $('<h1 />', { html: json.TNAME })); return content; } }, }); }); });

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  • Javascript + IFrame + Chrome + Https = strange issue

    - by GuiDoody
    Using a modal plugin for jquery, I'm opening an iframe in a modal with a click event and setting the source attribute to a relative url (should be within https). The page containing the click is an authenticated ssl page. In IE and Safari, this works as expected. In Chrome and Firefox, the source url is opened in http not https. If I set the source to an absolute url using https, same result. Example: // This doesn't work - resolves to http $('.lnkViewDetails').click(function(e){ var src = "/ThePage"; $.modal('<iframe src="' + src + '" height="500" width="425" style="border:0" frameborder="no">'); }); // This doesn't work - also resolves to http $('.lnkViewDetails').click(function(e){ var src = "https://MySite.com/ThePage"; $.modal('<iframe src="' + src + '" height="500" width="425" style="border:0" frameborder="no">'); }); Anyone know a way to get around this?

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  • Create an object with javascript reflection?

    - by acidzombie24
    I am doing something wrong. At the end of this o is empty. I want to pass in a string such as a=3&zz=5 and do o.a and o.zz to retrieve 3 and 5. How do i generate this object? function MakeIntoFields_sz(sz) { var kvLs = sz.split('&'); var o = new Array(); for (var kv in kvLs) { var kvA = kvLs[kv].split('='); var k = ''; var v = ''; if (kvA.length > 0) { k = kvA[0]; if (kvA.length > 1) v = kvA[1]; o[k] = v; } } return o; };

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  • Javascript setFullYear

    - by user187870
    var currentDate=new Date(); currentDate.setFullYear(2011); alert(currentDate); == this works, it sets the year to 2011 as expected. alert((new Date()).setFullYear(2011)); == this one doesn't work. Any idea why? Am I misunderstanding the syntax?

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  • Collision Handling in Javascript - Particles Get Stuck

    - by Conner Ruhl
    I am trying to recreate this, and I have been fairly successful. I am having issues with the collision handling though. Although the collision handling seems to work, it has very strange behavior. Here is what I have so far. This is the code that handles collisions: var dx = particle2.getX() - particle1.getX(); var dy = particle2.getY() - particle1.getY(); var angle = Math.atan2(dy, dx); var newP2X = particle1.getX() + (particle1.getRadius() + particle2.getRadius()) * Math.cos(angle); var newP2Y = particle1.getY() + (particle1.getRadius() + particle2.getRadius()) * Math.sin(angle); particle2.setX(newP2X); particle2.setY(newP2Y); var p1Vxi = particle1.getVx(); var p1Vyi = particle1.getVy(); var p1Mass = particle1.getMass(); var p2Vxi = particle2.getVx(); var p2Vyi = particle2.getVy(); var p2Mass = particle2.getMass(); var vxf = (p1Mass * p1Vxi + p2Mass * p2Vxi) / (p1Mass + p2Mass); var vyf = (p1Mass * p1Vyi + p2Mass * p2Vyi) / (p1Mass + p2Mass); particle1.setVx(vxf); particle1.setVy(vyf); particle2.setVx(vxf); particle2.setVy(vyf); EDIT: I have tried to change it to inelastic collisions like suggested, but for some reason the balls collide erratically. Check it out here. Any help is much appreciated!

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  • Redirect To Another Site With Header Information Attached Javascript

    - by Nick LaMarca
    I am trying to make a client side click and redirect to another site with header information added, my client side code for the onclick is this: function selectApp(appGUID, userId ,embedUrl) { if(embedUrl==="") { var success = setAppGUID(appGUID); window.location.replace('AppDetail.aspx'); } else { $.ajax({ type: "POST", url: embedUrl, contentType: "text/html", beforeSend: function (xhr, settings) { xhr.setRequestHeader("UserId", userId); }, success: function (msg) { //go to slx window.location.replace(embedUrl); } }); } } And the server side code in "embedUrl" is protected void Page_Load(object sender, EventArgs e) { string isSet = (String)HttpContext.Current.Session["saveUserID"]; if (String.IsNullOrEmpty(isSet)) { NameValueCollection headers = base.Request.Headers; for (int i = 0; i < headers.Count; i++) { if (headers.GetKey(i).Equals("UserId")) { HttpContext.Current.Session["saveUserID"] = headers.Get(i); } } } else { TextBox1.Text = HttpContext.Current.Session["saveUserID"].ToString(); } } This seems to work but its not too elegant. Is there a way to redirect with header data? Without (what Im doing) Saving header info in a session var then doing a redirect in 2 seperate pieces.

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  • javascript countdown clock

    - by roi
    <script> var interval; var minutes = 1; var seconds = 5; window.onload = function() { countdown('countdown'); } function countdown(element) { interval = setInterval(function() { var el = document.getElementById(element); if(seconds == 0) { if(minutes == 0) { el.innerHTML = "countdown's over!"; clearInterval(interval); return; } else { minutes--; seconds = 60; } } if(minutes > 0) { var minute_text = minutes + (minutes > 1 ? ' minutes' : ' minute'); } else { var minute_text = ''; } var second_text = seconds > 1 ? 'seconds' : 'second'; el.innerHTML = minute_text + ' ' + seconds + ' ' + second_text + ' remaining'; seconds--; }, 1000); } </script> this is a good countdown clock and i want to show the time in datalist how do i do it? like in this site www.1buy1.co.il

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