) in JavaScript only considers null or undefined as "nullish" values. If the left-hand side is any other value, even falsy values like "" (empty string), 0 , or false , it will not use the right-hand side:

Dec 11, 2008 · JavaScript has two sets of equality operators: === and !==, and their evil twins == and !=. The good ones work the way you would expect. The good ones work the way you …

Jun 7, 2011 · It's a little hard to google when all you have are symbols ;) The terms to use are "JavaScript conditional operator". If you see any more funny symbols in JavaScript, you should …

Because JavaScript has what are called "truthy" and "falsy" values, there are expressions that when evaluated in other expressions will result in a true or false condition, even though the …

Dec 6, 2015 · In JavaScript, there is no build-in function for doing modulo operation, so you need to write on your own by using Math.floor() as above. Alternatively even you could easily write …

Jun 5, 2012 · For id selectors, jQuery uses the JavaScript function document.getElementById(), which is extremely efficient. When another selector is attached to the id selector, such as …

This operator is almost never used in JavaScript. Other programming languages (like C and Java) use it for performance reasons or to work with binary data. In JavaScript, it has questionable …

Aug 9, 2016 · JavaScript is converting the two operands into the same type and comparing them. In essence, the equality operator tests that values are the same irrespective of their type. If …

Mar 7, 2016 · I haven't seen anything here or on MDN. I'm sure I'm just missing something. There's got to be some documentation on this somewhere.

Dec 27, 2010 · In Javascript && and || take all kinds of operands and return all kinds of funny results (whatever you feed into them). Also a logical operator should always take the values of …