javascript format number code example

Example 1: how to number format in javascript

function formatNumber(num) {
  return num.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1,')
}

console.info(formatNumber(2665)) // 2,665
console.info(formatNumber(102665)) // 102,665
console.info(formatNumber(111102665)) // 111,102,665
console.info(formatNumber(1240.5)) // 1,240.5
console.info(formatNumber(1000240.5)) // 1,000,240.5

Example 2: js format urcurency

// Create our number formatter.
var formatter = new Intl.NumberFormat('en-US', {
  style: 'currency',
  currency: 'USD',
});

formatter.format(2500); /* $2,500.00 */