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  • Is this correct about ajax POST?

    - by Tommy
    Could you confirm I understand this correctly. Using POST, the file specified in xmlhttp.open("GET","ajax_test.asp",true); will not be cached (sent to \Temporary Internet Files) ? It will stay on the server only? If this is true, is the updated html file after calling ajax POST, being updated in the \Temporary Internet Files ? Am I missing any other important information of this mechanism? Thank You.

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  • Why does the assignment operator return a value and not a reference?

    - by Nick Lowman
    I saw the example below explained on this site and thought both answers would be 20 and not the 10 that is returned. He wrote that both the comma and assignment returns a value, not a reference. I don't quite understand what that means. I understand it in relation to passing variables into functions or methods i.e primitive types are passed in by value and objects by reference but I'm not sure how it applies in this case. I also understand about context and the value of 'this' (after help from stackoverflow) but I thought in both cases I would still be invoking it as a method, foo.bar() which would mean foo is the context but it seems both result in a function call bar(). Why is that and what does it all mean? var x = 10; var foo = { x: 20, bar: function () {return this.x;} }; (foo.bar = foo.bar)();//returns 10 (foo.bar, foo.bar)();//returns 10

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  • Hide Dynamically Added Columns/Fields

    - by baldwingrand
    I have some dynamically created rows/columns. What I'd like to do is set a section of it (txtOffsetID) to be hidden. I tried this: txtOffsetID.setAttribute('type', 'hidden'); but it didn't work. I want to hide that entire column and any new columns added. I need it to work in IE. Thanks. Sample code: function addNewOffsetItem() { var iX = document.getElementById("txtOffsetIndex").value; iX ++; document.getElementById("txtOffsetIndex").value = iX; var tbl = document.getElementById("tblOffsetDetail").getElementsByTagName("TBODY")[0]; var tr = document.createElement("TR"); tbl.appendChild(tr); //This section should be hidden. //txtOffsetID1 var tdID = document.createElement("TD"); tr.appendChild(tdID); var p = document.createElement("P"); tdID.appendChild(p); var txtOffsetID = document.createElement("input"); p.appendChild(txtOffsetID); txtOffsetID.id = "txtOffsetID" + iX; txtOffsetID.setAttribute('name','txtOffsetID' + iX); //This section should be visible. //txtOffsetComments1 var tdComments = document.createElement("TD"); tr.appendChild(tdComments); var p = document.createElement("P"); tdComments.appendChild(p); var txtOffsetComments = document.createElement("textarea"); p.appendChild(txtOffsetComments); txtOffsetComments.id = "txtOffsetComments" + iX; txtOffsetComments.setAttribute('name','txtOffsetComments' + iX); }

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  • How do I return something in JQuery?

    - by TIMEX
    function vote_helper(content_id, thevote){ var result = ""; $.ajax({ type:"POST", url:"/vote", data:{'thevote':thevote, 'content_id':content_id}, beforeSend:function() { }, success:function(html){ result = html; } }); return result; }; I want to return the result. But it's returning blank string.

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  • What is XML good for and when should i be using it?

    - by Haroldo
    I'm curious, I've been developing pretty powerful websites/web apps, and I've never learnt XML, even odder I've never really felt the need to. It's not like Curl or Prepared Statements where before knowing what they did and how they worked I had a feeling 'there's got to be an easier way to do this!' or 'there's got to be something designed for this!'. Currently I work with MySQL and JSON and I don't have this feeling of 'I need to learn that' (XML), this must be wrong! I'm really interested to hear some compelling arguments for XML, and learn about things which it can do beter than JSON or MySQL (or some other aspect of web dev) and when i should be using it!

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  • Adding a Click event to a submit button and then submitting the form

    - by Abs
    Hello all, I have a form with a submit button. I have attached a click event to that submit button using JQuery. Once I did this my form wasn't submitting, I thought this was because of the event I added- if I remove that click event it submits the form successfully. I have tried giving my form an id and calling the submit function but this was not successful either. What can I do? $('#submit_gen').click(function() { $('#genbtn').html('<img src="images/ajax-loader.gif" alt="loading" />'); $('#action_form').submit(); }); The HTML: <form id="action_form" action="generate.php" method="post" enctype="multipart/form-data"> <input id="file_upload" type="file" name="upload" onchange="file_select();"/> <input type="text" id="overlay_input"> <div id="genbtn" class="genbtn"> <input id="submit_gen" type="submit" value="Upload"> </div> </form> Thanks all

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  • Retrieving values from a table in HTML using jQuery?

    - by Mo
    Hi i was just wondering whats the best way to retrieve the following labels and values from this HTMl code using jquery and storing them in to a array or hash map of some sort where i have for e.g "DataSet:" : "prod" or ["Dataset", "Prod"]? <table id="metric_summary"> <tbody> <tr class="editable_metrics"> <td><label>DataSet:</label></td> <td><input name="DataSet" value="prod"></td> </tr> <tr class="editable_metrics"> <td><label>HostGroup:</label></td> <td><input name="HostGroup" value="MONITOR-PORTAL-IAD"></td> </tr> <tr class="editable_metrics"> <td><label>Host:</label></td> <td><input name="Host" value="ALL"></td> </tr> <tr class="editable_metrics"> <td><label>Class:</label></td> <td><input name="Class" value="CPU"></td> </tr> <tr class="editable_metrics"> <td><label>Object:</label></td> <td><input name="Object" value="cpu"></td> </tr> <tr class="editable_metrics"> <td><label>Metric:</label></td> <td><input name="Metric" value="CapacityCPUUtilization"></td> </tr> thanks

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  • is the jQuery function "change()" working in IE ?

    - by Patrick
    is the jQuery function "change()" working in IE ? I usually use it to detect changes in forms (select/unselect check boxes), and submit them automatically without having to click on submit button (which is hided). i.e. $("#views-exposed-form-Portfolio-page-1").change(function(){ $("#views-exposed-form-Portfolio-page-1").submit(); }); But in Ie it doesn't work. It seems I have to use "click" instead. thanks

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  • IE firing anything else but click

    - by shabunc
    I just wonder is there's any way to fire any event via IE's event-triggering implementation - fireEvent. I've tried to use it but failed with all event except click. The only reason i've get interested with this issue it curiousity, thus, any answers like "just do not trigger events, it is a bad idea" - all such answers would be considered, well...not full))) thanks in advance

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  • string having '<br/>' throws unterminated string literal js error.

    - by kranthi
    Hi All, I am fetching some data from Db and displaying it in a textarea using jquery in the following way. $('#textareatest').val('<% =teststring %>').It is possible that the string 'teststring' can contain XHTML line breaks(<br/>).whenever the string contains <br/> I am getting the 'unterminated string literal' error.I saw a number of posts considering '\n' as line breaks and suggesting to escape it.I tried to escape the <br/> similarly,but it didn't work. Could someone please help me with this? UPDATE:: I've already escaped single quotes. here is an example string test string<br /> Thanks.

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  • Accessing "pseudo-globals" by their name as a string

    - by rob
    I am now in the process of removing most globals from my code by enclosing everything in a function, turning the globals into "pseudo globals," that are all accessible from anywhere inside that function block. (function(){ var g = 1; var func f1 = function () { alert (g); } var func f2= function () { f1(); } })(); (technically this is only for my "release version", where I append all my files together into a single file and surround them with the above....my dev version still has typically one global per js file) This all works great except for one thing...there is one important place where I need to access some of these "globals" by string name. Previously, I could have done this: var name = "g"; alert (window[name]); and it did the same as alert(g); Now -- from inside the block -- I would like to do the same, on my pseudo-globals. But I can't, since they are no longer members of any parent object ("window"), even though are in scope. Any way to access them by string? Thanks...

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  • Having an issue wit mouseup event

    - by user3680715
    Hello everyone I have this code working fine but I want the script to stop on the mouse up event. Here is an example of what I have now. How can I stop the script on mouse up event so that it looks like it only shows the coordinates when dragging over the image. Thank you! http://jsfiddle.net/Hc7x4/20/ $(document).ready(function () { $("#map-catcher").mousedown(function (e) { $("#map-catcher").mousemove(function (e) { $("#coord").text("x:"+e.offsetX+", y:"+e.offsetY); return; }); $("#map-catcher").mouseup(function (e) { return; }); }); });

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  • JSON element detection

    - by user3614570
    I’ve created a string… {"atts": [{"name": "wedw"}, {"type": "---"}]} I pile a bunch of these together in an array based on user input and attach them to another string to complete a JSON object that tests out as valid. So I end up with a global array called fields with a bunch of these little snippets. So how do I change the name "weds" with a new name? I’ve tried... function changefieldname(pos){ var obj = JSON.parse(jsonstring); var oldname = obj.tracelog.fields[pos].atts[0]["name"]; var newname = document.getElementById("newlogfieldname"+pos).value; fields[pos].replace(oldname, newname); //writejson(); } And a bunch of variations. I know everything is checking out correct interms of the variables pos, oldname, and newname. I also know that fields[pos] returns the string in the array I want to correct but it’s not happy. I also tried converting fields[pos] to a string, but the replace function doesn't work on it. I’m sure there is a good reason.

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  • Find word using JQuery

    - by tinti
    I need a little piece of advice. I have a test page with 2 fields: word number and URL Also i have a button Push. When i push the button i want to open the specified URL (it's local html files) and highlight the word at the "word number" position Of course the code must ignore element nodes (<p>,<b>,<table> and so on)

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  • Check for changes with jquery and a database

    - by Steve
    I am doing a notification system. When a new post is published, users will be notified immediately by an small notification on the screen. I am currently using this: setInterval(function(){ checkForChanges(); }, 2*1000); function checkForChanges(){ $.post("http://"+ document.domain + "/posts/checkForChanges/", function(dat){ if(dat>0){ .... /*create notification*/ } }); } And i was wondering if this is the correct way to do it or not. Because, this is calling a PHP function every 2 seconds and making a query to the database. In case there are no new changes, it won't do anything... Thanks.

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  • Get URL parameter function that gets value of url part or returns true if it's there but with no val

    - by LLer
    I'm using the following function to get a URL parameter. function gup(name, url) { name = name.replace(/[\[]/, '\\\[').replace(/[\]]/, '\\\]'); var results = new RegExp('[\\?&]'+name+'=?([^&#]*)').exec(url || window.location.href); return results == null ? null : results[1]; } It works only if the parameter has a value, for example. gup('a', 'http://example.com/page.php?a=1&b=2'); will return 1. But if I try gup('a', 'http://example.com/page.php?a&b=2'); It returns null. I want it to return true because parameter "a" exists in that url, even though it has no value it's still there and gup() should return true. Could I get a bit of help rewriting this? I'm not that good with regex.

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  • How to determine which enemy is hit and destroy it alone

    - by Jon Ferriter
    http://jsfiddle.net/5DB6K/ I have this game being made where you shoot enemies from the sides of the screen. I've got the bullets moving and being removed when they reach the end of the screen (if they didn't hit any enemy) and removing the enemy when they collide with it. //------------collision----------------// if(shot === true){ bulletY = $('.bullet').position().top + 2; bulletX = $('.bullet').position().left + 2; $('.enemy').each(function(){ if($('.enemy').hasClass('smallEnemy')){ enemyY = $(this).position().top + 7; enemyX = $(this).position().left + 7; if(Math.abs(bulletY - enemyY) <= 9 && Math.abs(bulletX - enemyX) <=9){ $(this).remove(); score = score + 40; bulletDestroy(); } } }); } However, the bullet destroys every enemy if the collision check is right which isn't what I want. I want to check if the enemy has the class of either smallEnemy, medEnemy, or lrgEnemy and then do the collision check which is what I thought I had but it doesn't seem to work. Also, the game starts to lag the more and more time goes on. Would anyone know the reason for that?

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  • Which browsers support html5 offline storage?

    - by Marcin
    Essentially, I wanted to run a piece of demo code from W3c Offline Webapps page. It looks like that: var db = window.openDatabase("notes", "", "The Example Notes App!", 1048576); Firefox 3.5, IE8 and Chrome do not seem to get it. Is there anybody out there that actually wrote support for that? Or is this wishful thinking about 'the standard of the future'?

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  • Align/Wrap images around div

    - by Ryan Phillips
    What I'm trying to achieve is a page with a div centered in the middle of the screen (720x360). This is done with jQuery using $(window).height() and $(window).width() and works perfectly. The next part is getting 180x180 images to fit around that middle div. These will fill the screen + beyond. I'm stuck on how to get these to align that way and I couldn't find a live example of anyone doing the same thing. So, is this even possible? Thanks, Any help is appreciated!

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  • website page losing title

    - by user128015
    i am going mad with this problem now - if u goto http://talll.com and start clicking around on the menu items like news, economics etc., u will find that the page title says "undefined" - i just want to set the page title to some value thats all - HELPPPPPP!!!

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  • HTML5 drag upload in new window

    - by user463604
    I have setup an HTML5 drag and drop upload into my site. The problem that I have is when a user is uploading a large file, they must wait for the upload to finish before navigating and using the rest of the site. So, what I'd like to do is allow the user to drag files to the main site and then have it automatically open a new window and start the upload there so they can still use the rest of the site while the upload is happening. Anyone have and advice on how to accomplish this or if it can even be done?

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