How To Abort Loading Of Dynamically Included <script>
Jan 4, 2007
I'm writing a small async webapp. in JavaScript and I'm using <script> element technique to load data. I'm usign <scriptbecause of cross domain restrictions with XmlRequest.
The problem is when I remove a element that is currently loading from DOM (with removeChild) Firefox still loads it and waits with other scripts.
What I want is to break this process and load a new data without waiting for old one.
Here is example script:
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Oct 13, 2010
I have a grid that I'm adding rows to that include form text input boxes using addRowData. I know I can use the "editable:true" for that but I'd rather not at this time. Anyway I have the <div id=list1></div> surrounded by a <form></form>. Also statically I have a couple of text input boxes and a submit button. When I press the submit button the only parameters that show up in the POSTED data are the static ones. Is there a way to get the form elements "registered" with the form? I know I can always use javascript to extract the data and save it via an ajax call, but if there is a way to do it "correctly"
Example
var myRow = {id:"0",call:"<input name='callt"+boxNo+"' id='call"+boxNo+"' class='calls' type='text'/>",amount:"<input name='amt"+boxNo+"' id='amt"+boxNo+"' type='text' value='"+defaultDep+"'/>",residual:"",calculate:"<input type='button' class='buttons' id='b"+boxNo+"'/>"};
$("#list1").addRowData(boxNo,myRow);
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Feb 11, 2011
I have written some JAVA code that pulls and image from a DB and writes out the byte stream.When I call the URL directly I can see my image, however when I use something like:
function loadImage(filename) {
$(document).ready(function() {
alert('loadImage Called with ' + filename);
[code]....
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Mar 16, 2006
I have a set of scripts which rely on the ability to dynamically load css by constructing <link> elements via DOM scripting, and appending them into the page header. It works, for the most part, extremely well, but I need to be able to attach an onload function to said links. Unfortunately, this only seems to work in IE, not in FireFox or Safari (the three being my 'target' browsers under which the whole system needs to work.) Any means by which I can determine via Javascript whether such a link has finished loading? It doesn't have to be via onload if it's unsupported, but I need to be able to implement it across IE / Mozilla / Safari.
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Nov 10, 2010
In PERL there is a 'die' function that stops execution of a program if certain conditions are not met.For example, a needed file is not found because it is miss typed.Is there a similar function for javascript?The code I would think would follow something like this:
Code:
var FileName = ''; // might have expected to enter something like 'ExternalFile.js' from a Querystring
[code]....
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Apr 14, 2006
I have been struggling with a cross browser solution to loading
external javascript files on the fly.
I have been successful using the following code in IE6:
var newScr = document.createElement("SCRIPT");
newScr.src = "newScr.js";
newScr.type="text/javascript";
document.getElementsByTagName("head")[0].appendChild(newScr);
I believe the reason is that IE is loading the external file
syncronously while Firefox is not. Is there an onload event for
creating an element (if so I do not see it in Venkman). I have seen the
solution of using XMLHTTP to load the script but I am trying to get
around any dependency (atleast at this stage of the library) on
activex.
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Jan 25, 2007
I'm using a function like this to load divs dynamically (and hide
current one..)
function get_img(curr_img,curr_nav,new_img,new_nav2) {
var img_top = eval('document.getElementById(' + "curr_img" + ')');
var img_new = eval('document.getElementById(' + "new_img" + ')');
var nav_top = eval('document.getElementById(' + "curr_nav" + ')');
var nav_new = eval('document.getElementById(' + "new_nav" + ')');
img_top.style.visibility = "hidden";
img_new.style.visibility = "visible";
nav_top.style.visibility = "hidden";
nav_new.style.visibility = "visible";
curr_img = new_img;
curr_nav = new_nav;
}
problem I always run into in situations like this is I can't tell which
one is currently loaded.. how do you detect which div is currently loaded?
this is in JSP, divs generated with loops...
for (int i = 0; i < photos.length; i++) {
%>
<div id="nav<%=photos[i]%>">
etc...
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Aug 12, 2010
I'm experimenting with dynamic loading of javascript using JQuery. So basically I have a loadScript function that accepts either the URL of a JS file or a javascript source in a string. For the former, I create a 'script' element, set its src attribute to the URL of the file and insert the element into the DOM's head element. So far it seems to work nicely. For the latter, I create a 'script' element, set its innerHTML to the JS string and insert it into the DOM's head element. This doesn't work so well. I *think* it's because the JS source in question contains:
$(document).ready(function() {
// put all your jQuery goodness in here.
});
It looks like the JS source in my string is stomping over parts of the DOM it shouldn't and changing existing elements.
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Apr 28, 2011
Here's what I'd like to do using pure JavaScript and HTML (no Ajax or PHP): My website loads different JavaScript files dynamically which contain a bunch of data, that I will display on the website. The dynamical loading function is placed in the <HEAD> and looks like that:
Code:
function loadJsFile(filename){
console.log("loading js file")
var fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript")
fileref.setAttribute("src", filename)
fileref.onload = dataIsLoaded;
if (typeof fileref!="undefined"){
document.getElementsByTagName("head")[0].appendChild(fileref)
}}
The dataIsLoaded method in there is a callback that is triggered when the JavaScript file has been loaded:
Code:
function dataIsLoaded(){
console.log("loading js file done")
dataLoaded = true;
data = new Data();
}
DataLoaded is simply a global boolean that is per default false and the 'data' variable contains all the data I want to display on my site. While the JavaScript file is being loaded, the browser continues building the site. When it gets to the <body> that wants to access some information from the data variable, I get the unsurprising error that 'data' is undefined. I looked for a way to wait until 'data' is defined and then continue with building the <body> but couldn't find a solution.
Alternatively I wanted to reload the divs in the <body> when the 'data' is available:
Code:
function reloadDivs(){
if(dataLoaded){
console.log("data available, reloading divs");
document.getElementById('someDiv').innerHTML = document.getElementById('someDiv').innerHTML
}else{
console.log("data is not yet available");
setTimeout('loadReportData();', 500);
}}
This does not work, I get a blank div when I do that.
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Jul 22, 2006
I'm playing around with forms and wrote a JavaScript
function that loops through all form elements and displays every option
in every select field with an alert for each one.
var els = form.elements;
var l = els.length;
for (var i=0; i<l; i++) // loop through all form elements
{
if (els[i].type.substring(0,6) == 'select')
{
var options = els[i].options;
for (var j=0, len=options.length; j<len; j++)
{
alert(els[i].name + ' option ' + j + ' = "' + options[j].text + '"')
}}}
In the form I am using this results in many alert boxes popping up.
This seems like a very, very basic question, but I've Googled it quite a
bit and can not find an answer. Is there a way to manually abort that
script (other than closing my browser) or do I have to keep clicking OK
until the loop has run it's complete course?
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Mar 30, 2006
While testing my pages in IE and Firefox, I have noticed that when I
remove an image from the DOM before it has finished downloading in IE,
that the status bar gets stuck at Downloading Picture https://....
Which means the page never finishes loading, I have tested by just
making the images style.display = "none" and I no longer get the error,
but since this is an AJAX app, that would just leak memory as images
would never get deleted when people traverse the web app. Has anyone
else experienced this behavior or have a possible solution?
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Feb 4, 2011
The documentation for $.ajax() says that when the error callback is invoked, the error string may be null or one of "error", "abort", "timeout", "parseerror". So naturally, I assumed that if I were to call .abort() on the XHR that $.ajax() returns, the error string in the error callback would be "error". But that seems not to be the case. What I'm seeing, in jquery-1.4.4, is "error" as the error string. Has anyone else seen this problem? I'm using the most recent Firefox on MacOS X 10.6.
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Apr 12, 2010
I've got the following jquery code querying my server, but can't figure out how to Abort the query and reload the page immediately if someone clicks on <a> link. how to abort the current (all) ajax calls if someone clicks on <a> link??
[Code]...
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Jun 22, 2009
This is my first time using jquery and Ive designed a small and simple fadein/out script that acts as a rollover on this navigation bar: [URL] Here is the code:
$(document).ready(function() {
$(".navbutton").not("#active").hover(function(){
$(this).siblings(".rollover").fadeIn(300);
},function(){
$(this).siblings(".rollover").fadeOut(300);
});
});
It works great. However, if a user quickly moves their mouse over the nav buttons and repeats the process, the rollover affect will fadein/ out over and over again until its completed the cycle the amount of times the user moved the mouse over the button back and forth. I wish to change this behaviour so that, somehow, the processing is aborted if it is noticed the mouse is not present after a fadeout is completed.
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Mar 6, 2011
I have a function, something like this:
function temp(){
$ajax_request.abort();
some operations
$ajax_request = $.ajax({url: url, type:'POST', dataType: 'json', data: {...}})
success(function() { alert("success"); })
.error(function() { alert("error"); })
[Code]...
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May 31, 2009
Normally I would abort my request this way:
Code:
var myRequest=new XMLHttpRequest;
...
myRequest.abort();
But how would I abort my request when I'm making it using the Ajax Toolbox library? In their documentation I saw there is "aborted" which only tells me whether the request has been aborted or not so there must be a way to abort it.
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Nov 10, 2009
I call a javascript function b from another function a.
in the function b at certain conditions i want to stop the javascript execution and i have did it by throwing an exception by using Throw New Error('Stopi').
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May 29, 2009
I am trying to create portlets that dynamically load their content (usinq jQuery). My first approach was to leave the header + footer + decorations of the portlet OUTSIDE of the dynamically loadable content. It worked just fine but I had to abandon that approach so that I could use the same code both for statically- and dynamically-loaded content (e.g. when no AJAX support was available). So far so good.
Now to my problem: I use the following code for loading my dynamic content
The loading works fine, but after the dynamic content has been loaded I can not seem to get access to it using jQuery!
Short description: Line 3 clears the content (I know! There are better solutions!) Line 4 loads the content Line 6 dumps the data on the console; this is for debuging only, so that I can establish that the correct content is loaded
After the data is properly loaded I did expect to be able to find it by traversing the DOM tree in traditional jQuery fashion (like in Line 10). However, dumping the contents of the 'tag' shows it containing no content at all; it is empty even though the browser renders the expected new result. I thought: Well! The browser holds two copies of the DOM tree; one that is the original page and one that is the modified content used for rendering". Therefore I attempted to manipulate the loaded content within the function (Line 8). The content is visible there, that I have established in Line 6. But I do not know how to access it jQuery-style.
(Why am I trying to modify the loaded content? I want to inject a title row with various decorations and clickable content.)
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Feb 6, 2010
I came up with some code to load javascript files dynamically. But I've got problems..
When the script element is dynamically added to the head section of html, i think that the document.ready event fires once again and therefore the code sort of runs twice.
In the html page I call this method:
In the script test.js I have the function SayHi():
The SayHi method never gets called and alert('begin') & alert('getScript') get called twice in this sequence:begin begin getScript getScript.
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Aug 15, 2005
I'm debugging a large app and one of the pages includes the same javascript file twice. Obviously, I will be removing one instance.
<script src="file.js"/>
.. a little later...
<script src="file.js"/>
Now the file contains functions, so no danger of variables being overridden, but can anyone tell me what the net effect of the above is?
Are there two versions of every function in memory?
And will it take longer for the a call from the HTML file to one of the functions to execute?
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Oct 12, 2010
I'm running into a little bit of a problem with tinyMCE. My textarea is not loaded with the initial first page load but dynamically inserted in the DOM via ajax, so it doesn't display.
I've studied the documentation that comes with tinyMCE and it still kinda puzzles me what I have to do to "dynamically load" tinyMCE.
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Jul 19, 2011
what I mainly want to do is to get the div's content and pass it in a variable. To explain what I have done until now :
I have my php file that contains the code :
<?php
$connect = mysql_connect("localhost", "...","...") or die("Could not connect to the database.");
mysql_select_db("...") or die("Could not find database <...>");
[Code]....
As I have read here, this should have done mydata="6" (is the current result)?
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Aug 20, 2005
Simple question but google and the forum search function didn't helped me.
if I include a script on http://www.mywebsite.com/foo/index.html , say:
Code:
<script type="text/javascript" src="/include/path/myscript.js"></src>
is is possible to myscript.js to access *his own location* (here http://www.mywebsite.com/include/path/myscript.js )?
(again, I don't want http://www.mywebsite.com/foo/index.html location, but the included script location) ...
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Mar 3, 2007
does anyone can send me an example how to reload a div? I have an asp included file inside a div and i'd like to refresh it..
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Oct 3, 2010
I have a problem calling Javascript functions that were included through PHP. The site is written in PHP. I
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Aug 31, 2010
I few sites said to (in the js file) put the varible in <%= %> these tags but thats not doing any good. Is there some other part needed to this I'm missing. The javascript I'm using is in a file I included in my VS project.
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