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Checking length of dictionary object [duplicate]
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Now that javascript has the Map object, probably better off using that and using new Map().size
– Greg Hornby
Jul 24 '19 at 23:36
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Is there a JavaScript / jQuery DOM change listener?
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How can I check if an element exists in the visible DOM?
...Exists.
}
And if you can't use third-party libraries, just stick to base JavaScript:
var element = document.getElementById('elementId');
if (typeof(element) != 'undefined' && element != null)
{
// Exists.
}
sh...
jQuery document.ready vs self calling anonymous function
...kes itself as soon as possible when the browser is interpreting your ecma-/javascript. Therefor, its very unlikely that you can successfully act on DOM elements here.
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Appending to an object
I have an object that holds alerts and some information about them:
13 Answers
13
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Media query to detect if device is touchscreen
...en not on a touchscreen device? If there is no way, do you suggest using a JavaScript solution such as !window.Touch or Modernizr?
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Remove everything after a certain character
... LoL - The split can accept regex so +1 for not using split? LoL - Javascript use regex so +1 for not using Javascript? How can more code and complexity make it a simple task? Isn't both regex and split simpler and more effective?
– user985399
Jun 6 '19...
jQuery - getting custom attribute from selected option
...Query "id" and the value.
<html>
<head>
<script type="text/JavaScript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
</head>
<body>
<select id="List1"></select>
<select id="List2">
<option id="40000">List...
Test for existence of nested JavaScript object key
...ond argument for the checkNested method. developer.mozilla.org/en/docs/Web/JavaScript/Reference/…
– Vernon
Dec 28 '16 at 15:49
7
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Detecting Unsaved Changes
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In the .aspx page, you need a Javascript function to tell whether or not the form info is "dirty"
<script language="javascript">
var isDirty = false;
function setDirty() {
isDirty = true;
}
function checkSave() {
v...