js number to binary string .tostring 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: string to binary javascript
let num = 2020;
let x = +num.toString(2);
console.log(x);