کد جاوایی که ۵۰در صد وبلاگ های خارجی گذاشتن

Description: A useful utility that rounds any number to the specified decimal place. This is needed because JavaScript doesn't have any built-in methods for the task. The function takes two parameters- a number (has to be a number datatype), and the number of places to round it to.

Example: n/a

Directions: Add this script to your page:

<script> function roundit(Num, Places) { if (Places > 0) { if ((Num.toString().length - Num.toString().lastIndexOf('.')) > (Places + 1)) { var Rounder = Math.pow(10, Places); return Math.round(Num * Rounder) / Rounder; } else return Num; } else return Math.round(Num); } //Sample usage- This will round 23.3353 to 2 decimals and then alert result: alert(roundit(23.3353, 2)) </script>

To round numbers using it, simply invoke the function:

roundit(78.4333, 2)

where the first parameter (78.4333) is the number to round, and the second (2), the number of decimals to round it to. For example, the following alerts this processed number:

<script>
//alerts 78.43
alert(roundit(78.4333,2))
</script>