What does "use strict" do in JavaScript, and what is the reasoning behind it?

What does "use strict" do in JavaScript, and what is the reasoning behind it?

javascript syntax jslint use-strict

javascript

How do JavaScript closures work?

javascript function variables scope closures

javascript

How do I check if an element is hidden in jQuery?

javascript jquery dom visibility

javascript

How can I remove a specific item from an array?

javascript arrays

javascript

How do I redirect to another webpage?

javascript jquery redirect

javascript

var functionName = function() {} vs function functionName() {}

javascript function syntax idioms

javascript

How do I remove a property from a JavaScript object?

javascript

javascript

How to check whether a string contains a substring in JavaScript?

javascript string substring string-matching

javascript

How do I include a JavaScript file in another JavaScript file?

javascript file import include

javascript

How to return the response from an asynchronous call

javascript jquery ajax asynchronous return

javascript

What's the difference between using "let" and "var"?

javascript scope ecmascript-6 var let

javascript

For-each over an array in JavaScript

javascript arrays loops foreach iteration

javascript

Which equals operator (== vs ===) should be used in JavaScript comparisons?

javascript operators equality equality-operator identity-operator

javascript

How to validate an email address in JavaScript

javascript regex validation email email-validation

javascript

What is the most efficient way to deep clone an object in JavaScript?

javascript object clone

javascript