everget

Member in object

Check whether a certain method or property (typically an entry point into using the API or other feature you are detecting for) exists in its parent Object

Check if a certain property exists on a global object (such as window or navigator)

if("geolocation" in navigator) { ... }

everget

Value	Operator	Description	Example
19	( )	Expression grouping	(3 + 4)
18	.	Member	person.name
18	[]	Member	person["name"]
17	()	Function call	myFunction()
17	new	Create	new Date()
16	++	Postfix Increment	i++
16	--	Postfix Decrement	i--
15	++	Prefix Increment	++i

everget

// ArrayScript...or as I would have nothing to do

let testSuite = [
    'Awesome',
    'epic fail',
    'remember,remember',
    'to be or not to be...',
    'DealerPoint is awesome...',
    'The best code is the one that doesn`t exist...',
    'Whatever the mind can conceive and believe, the mind can achieve. — Napoleon Hill',

everget

CSS Properties grouping order

The useful technique for CSS styling... This technique eliminates the need to spend your time for searching properties in alphabethical order

Why?

• CSS-properties are composed by the role each of them provides, not in alphabethical order (famous wrong practices);

• You haven't to waste your time finding CSS property in an alphabethical garbage;

• So, your eyes don't work a needless job.

everget

JavaScript Bitwise Hacks

It assumes the highest positive signed 32-bit float value for numbers. In other words, 2147483647 (or 0x7FFFFFFF or 2^31-1).

Table of Contents

1. Toggle switch
2. Variable swap
3. Math.pow
4. Determine if an integer is a power of 2
5. Round up to the next highest power of 2