add separator for thousands jquery code example

Example 1: js format number thousands separator

function numberWithCommas(x) {
    return x.toString().replace(/\B(?<!\.\d*)(?=(\d{3})+(?!\d))/g, ",");
}

Example 2: javascript round to 2 digits

var num = 2;
var roundedString = num.toFixed(2);// 2.00