remainder of division in javascript code example

Example 1: javascript modulo

x = a % b // % is modulo

Example 2: how to find remainder in javascript

var myNum = 10 / 4;       // 2.5
 var fraction = myNum % 1; // 0.5
 myNum = -20 / 7;          // -2.857142857142857
 fraction = myNum % 1;     // -0.857142857142857