javascript 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: remove trailing zeros javascript

var n = 6.96900
var noTrailingZeroes = n.toString()
console.log(noTrailingZeroes) // -> 6.969