functions adding two constants javascript code example

Example 1: add variable numerically in javascript

//use parseFloat(x); to change string to number
a=10;
b=20;
console.log(parseFloat(a)+parseFloat(b));//this will give a+b=30
//while
consle.log(a+b); //will give a+b=1020 [as String]

Example 2: how to add two numbers in javascript

let a = 4;
let b = 5;
document.write(a + b);