javascript code to convert decimal to binary code example

Example 1: javascript convert number to binary

function dec2bin(dec){
    return (dec >>> 0).toString(2);
}

dec2bin(1);    // 1
dec2bin(-1);   // 11111111111111111111111111111111
dec2bin(256);  // 100000000
dec2bin(-256); // 11111111111111111111111100000000

Example 2: convert decimal to binary javascript

var n = 5;
n.toString(2); // "101"

Example 3: string to binary javascript

let num = 2020;
let x = +num.toString(2);
console.log(x);