how to round off to two decimal places in javascript code example

Example 1: javascript round decimal 2 digits

var numb = 123.23454;
numb = numb.toFixed(2);

Example 2: javascript round to 2 decimal places

var subTotal="12.1345";// can also be int, float, string
var subTotalFormatted=parseFloat(subTotal).toFixed(2); //"12.13"

Example 3: round to nearest decimal javascript

round(12345.6789, 2) // 12345.68
round(12345.6789, 1) // 12345.7

Example 4: round to nearest decimal javascript

round(12345.6789, -1) // 12350
round(12345.6789, -2) // 12300