++i vs i++ js code example

Example 1: javascript decrement

// Increment
let a = 1;
a++;
++a;
// Decrement
let b = 1;
b--;
--b;

Example 2: javascript diffence between a++ and ++a

// ++i returns the value of i after it has been incremented. i++ returns the value of i before incrementing.

// When the ++ comes before its operand it is called the "pre-increment" operator, and when it comes after it is called the "post-increment" operator.

// This distinction is only important if you do something with the result.

var i = 0, j = 0;

alert(++i);  // alerts 1
alert(j++);  // alerts 0