Strict Equality in JavaScript
You can check strict equality in JavaScript using the operator ===. This operator does strict comparison and considers the operands equal if they鈥檙e of the same type, and their values are equal. ...
The difference between invisible and hidden HTML elements
In HTML there are 2 ways to hide an element. You can either make it invisible or make it hidden. The difference between a hidden HTML element and an invisible one is the amount of space occupied by the HTML element....
What is the difference between single and double quotes in JavaScript
There鈥檚 no functional difference between single and double quotes in JS. Both could be used to create JavaScript strings. Mostly it鈥檚 just about the code style that鈥檚 used in your project....
How to remove duplicates from a JavaScript array
There are multiple ways you can remove duplicates from a JS array. My favorite one is by using a Set and a spread operator. ...
Format a JavaScript Number to a Currency String
You can use the function toLocaleString or Intl.NumberFormat to get a formatted currency string from the JavaScript number. Here鈥檚 how it works. ...
How to empty an array in JavaScript
One of the easiest ways to empty a JS array is to set its length to zero. Alternatively you can use the functions pop or splice. Empty a JavaScript array by setting its length to 0 The length property holds the size of an array in JS....
How to check if a variable is a string in JavaScript
To check that a JS variable is of a type string, you can use 2 operators: instanceof and typeof. Here鈥檚 a quick solution. if (typeof text === 'string' || text instanceof String) { // it's a string!...
Get random number in a range using JavaScript
To get a random number is JS you almost always rely on the function Math.random. The only issue is that it returns a number between 0 and 1. You can generate a number in a specific range by writing a straightforward function....
How to get screen width and height with JavaScript
The object window.screen holds all the information you about the current screen. You can access the resolution of the screen by accessing its width and height properties. ...
How to remove the last n characters from a JavaScript string
Before you make another step, remember, that strings in JavaScript are immutable. This means that you can鈥檛 alter the string by removing something from it. So, when you want to remove the last n symbols from a string in JS, your only option is to create a new string that wouldn鈥檛 have these n characters....