$ javascript meaning code example

Example 1: what is javascript

JavaScript gives web pages interactive elements that engage a user.

Example 2: what does -= mean in JavaScript

/* JavaScript shorthand -=
-= is shorthand to subtract something from a
variable and store the result as that same variable.
*/

// The standard syntax:
var myVar = 5; 
console.log(myVar) // 5
var myVar = myVar - 3;
console.log(myVar) // 2

// The shorthand:
var myVar = 5;
console.log(myVar) // 5
var myVar -= 3;
console.log(myVar) // 2

Example 3: what is javascript

javascript is a programming language by javascript you can make websites, apps etc..

Example 4: javascript % meaning

// % is the modulo operator
// It returns the rest of a division
// Example uses:

27 % 5
// returns 2, as 27/2 is 5 with rest 2.

99 % 13
// returns 8, as 99/13 is 7 with rest 8.

420 % 0
// returns NaN, as division by 0 is not calculatable.