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How to check if two arrays are equal with JavaScript? [duplicate]
...,3], [1,2,3]); // true
_.isEqual([1,2,3], [3,2,1]); // false
Fortunately Javascript has a built in method for for solving this exact problem, sort:
_.isEqual([1,2,3].sort(), [3,2,1].sort()); // true
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What is this 'Lambda' everyone keeps speaking of?
...of executable code, that can be passed around as if it were a variable. In JavaScript:
function () {}; // very simple
Let's see now some uses for these lambdas.
Abstracting boilerplate code
Lambdas may be used to abstract away boilerplate code. For example loops. We're used to write for and wh...
Finding Variable Type in JavaScript
...369089/2988 no need to add my own, and the answer is trivial: variables in JavaScript do not have types, so it is impossible to get the type of a variable.
– Jörg W Mittag
Aug 18 at 12:57
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Capturing “Delete” Keypress with jQuery
...keyCode == 46) {
alert('Delete key released');
}
});
Source: javascript char codes key codes from www.cambiaresearch.com
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How to check 'undefined' value in jQuery
...JQuery library was developed specifically to simplify and to unify certain JavaScript functionality.
However if you need to check a variable against undefined value, there is no need to invent any special method, since JavaScript has a typeof operator, which is simple, fast and cross-platform:
if ...
stopPropagation vs. stopImmediatePropagation
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Just to be sure, the native javascript version of event.stopImmediatePropagation doesn't stop bubbling right?
– Alexander Derck
Oct 11 '16 at 21:12
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Event listener for when element becomes visible?
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Javascript events deal with User Interaction, if your code is organised enough you should be able to call the initialising function in the same place where the visibility changes (i.e. you shouldn't change myElement.style.dis...
Simple (non-secure) hash function for JavaScript? [duplicate]
...code, not hundreds of lines) hash function written in (browser-compatible) JavaScript? Ideally I'd like something that, when passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographica...
Why should I use a semicolon after every function in javascript?
I've seen different developers include semicolons after functions in javascript and some haven't. Which is best practice?
9...
Return positions of a regex match() in Javascript?
...) character positions inside a string of the results of a regex match() in Javascript?
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