Questions tagged [jquery]
jQuery is a JavaScript library. jQuery is a popular cross-browser JavaScript library that facilitates Document Object Model (DOM) traversal, event handling, animations, and AJAX interactions by minimizing the discrepancies across browsers. A question tagged jQuery should be related to jQuery, so jQuery should be used by the code in question, and at least jQuery usage-related elements must be in the question. Consider also adding the JavaScript tag.
jquery
79,244
questions
1674
votes
23
answers
1.1m
views
Event binding on dynamically created elements?
I have a bit of code where I am looping through all the select boxes on a page and binding a .hover event to them to do a bit of twiddling with their width on mouse on/off.
This happens on page ready ...
- 98.7k
610
votes
7
answers
202k
views
Why does jQuery or a DOM method such as getElementById not find the element if I put the script element near the top of the page?
What are the possible reasons for document.getElementById, $("#id") or any other DOM method / jQuery selector not finding the elements?
Example problems include:
jQuery silently failing to ...
- 811k
3325
votes
16
answers
6.4m
views
Why does my JavaScript code receive a "No 'Access-Control-Allow-Origin' header is present on the requested resource" error, while Postman does not?
Mod note: This question is about why XMLHttpRequest/fetch/etc. on the browser are subject to the Same Access Policy restrictions (you get errors mentioning CORB or CORS) while Postman is not. This ...
- 34.4k
4502
votes
15
answers
855k
views
"Thinking in AngularJS" if I have a jQuery background? [closed]
Suppose I'm familiar with developing client-side applications in jQuery, but now I'd like to start using AngularJS. Can you describe the paradigm shift that is necessary? Here are a few questions that ...
- 364k
3148
votes
34
answers
1.5m
views
How can I upload files asynchronously with jQuery?
I would like to upload a file asynchronously with jQuery.
$(document).ready(function () {
$("#uploadbutton").click(function () {
var filename = $("#file").val();
$.ajax({...
- 77.7k
7698
votes
58
answers
7.9m
views
How do I redirect to another webpage?
How can I redirect the user from one page to another using jQuery or pure JavaScript?
- 102k
2502
votes
18
answers
733k
views
.prop() vs .attr()
So jQuery 1.6 has the new function prop().
$(selector).click(function(){
//instead of:
this.getAttribute('style');
//do i use:
$(this).prop('style');
//or:
$(this).attr('style'...
- 146k
870
votes
27
answers
1.8m
views
jQuery Ajax File Upload
Can I use the following jQuery code to perform file upload using POST method of an ajax request ?
$.ajax({
type: "POST",
timeout: 50000,
url: url,
data: dataString,
success: ...
- 9,831
1151
votes
28
answers
902k
views
Selecting and manipulating CSS pseudo-elements such as ::before and ::after using javascript (or jQuery)
Is there any way to select/manipulate CSS pseudo-elements such as ::before and ::after (and the old version with one semi-colon) using jQuery?
For example, my stylesheet has the following rule:
.span::...
- 11.7k
758
votes
17
answers
1.8m
views
jQuery Ajax POST example with PHP
I am trying to send data from a form to a database. Here is the form I am using:
<form name="foo" action="form.php" method="POST" id="foo">
<label for="bar">A bar</label>
&...
- 15.9k
3253
votes
14
answers
940k
views
event.preventDefault() vs. return false
When I want to prevent other event handlers from executing after a certain event is fired, I can use one of two techniques. I'll use jQuery in the examples, but this applies to plain-JS as well:
1. ...
- 70.1k
2950
votes
91
answers
1.8m
views
How do I detect a click outside an element?
I have some HTML menus, which I show completely when a user clicks on the head of these menus. I would like to hide these elements when the user clicks outside the menus' area.
Is something like this ...
1949
votes
66
answers
2.0m
views
How to detect a mobile device using jQuery
Is there a way to detect whether or not a user is using a mobile device in jQuery? Something similar to the CSS @media attribute? I would like to run a different script if the browser is on a handheld ...
2447
votes
54
answers
3.2m
views
Remove duplicate values from JS array
I have a very simple JavaScript array that may or may not contain duplicates.
var names = ["Mike","Matt","Nancy","Adam","Jenny","Nancy",&...
- 24.7k
468
votes
5
answers
364k
views
Is there a JavaScript / jQuery DOM change listener?
Essentially I want to have a script execute when the contents of a DIV change. Since the scripts are separate (content script in the Chrome extension & webpage script), I need a way simply observe ...
- 13.7k