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
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How do I check if an element is hidden in jQuery?
How do I toggle the visibility of an element using .hide(), .show(), or .toggle()?
How do I test if an element is visible or hidden?
- 131k
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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
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68
answers
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views
How do I check whether a checkbox is checked in jQuery?
I need to check the checked property of a checkbox and perform an action based on the checked property using jQuery.
For example, if the age checkbox is checked, then I need to show a textbox to enter ...
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votes
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answers
3.9m
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Setting "checked" for a checkbox with jQuery
I'd like to do something like this to tick a checkbox using jQuery:
$(".myCheckBox").checked(true);
or
$(".myCheckBox").selected(true);
Does such a thing exist?
- 56.7k
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15
answers
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"Thinking in AngularJS" if I have a jQuery background? [closed]
Suppose I'm familiar with developing client-side applications in jQuery, but now I'd like to start using AngularJS. Can you describe the paradigm shift that is necessary? Here are a few questions that ...
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Why does my JavaScript code receive a "No 'Access-Control-Allow-Origin' header is present on the requested resource" error, while Postman does not?
Mod note: This question is about why XMLHttpRequest/fetch/etc. on the browser are subject to the Same Access Policy restrictions (you get errors mentioning CORB or CORS) while Postman is not. This ...
- 34.4k
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votes
14
answers
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event.preventDefault() vs. return false
When I want to prevent other event handlers from executing after a certain event is fired, I can use one of two techniques. I'll use jQuery in the examples, but this applies to plain-JS as well:
1. ...
- 70.1k
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17
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Is there an "exists" function for jQuery?
How can I check the existence of an element in jQuery?
The current code that I have is this:
if ($(selector).length > 0) {
// Do something
}
Is there a more elegant way to approach this? ...
- 56k
3148
votes
34
answers
1.5m
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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
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votes
39
answers
2.5m
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How can I know which radio button is selected via jQuery?
I have two radio buttons and want to post the value of the selected one.
How can I get the value with jQuery?
I can get all of them like this:
$("form :radio")
How do I know which one is selected?
- 81.4k
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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 ...
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20
answers
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2715
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answers
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Scroll to an element with jQuery
I have this input element:
<input type="text" class="textfield" value="" id="subject" name="subject">
Then I have some other elements, like ...
- 45.6k
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34
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3.5m
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How can I determine if a variable is 'undefined' or 'null'?
How do I determine if a variable is undefined or null?
My code is as follows:
var EmpName = $("div#esd-names div#name").attr('class');
if(EmpName == 'undefined'){
// DO SOMETHING
};
<...
- 40.7k
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42
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Adding a table row in jQuery
I'm using jQuery to add an additional row to a table as the last row.
I have done it this way:
$('#myTable').append('<tr><td>my data</td><td>more data</td></tr>');
...
- 144k