js remove leading zeros code example

Example 1: javascript remove leading zeros from string

use a regular expression like this  

var strNumber = "0049";  
console.log(typeof strNumber); //string  
  
var number  = strNumber.replace(/^0+/, '');

Example 2: js remove zeros after decimal

(+n).toFixed(2).replace(/(\.0+|0+)$/, '')


// 0 => 0
// 0.1234 => 0.12
// 0.1001 => 0.1

// 1 => 1
// 1.1234 => 1.12
// 1.1001 => 1.1

// 100 => 100
// 100.1234 => 100.12
// 100.1001 => 100.1