Tutorial-formatting floating point numbers in javascript

How to formatting floating point numbers in javascript

In jQuery or javascript when we add or multiple or any mathematical opertaion perform on floating point numbers it gives wrong output .

For Example if we add 0.1+0.2 using javascript it gives  0.30000000000000004 instead of 0.3 .

so here is the solution of perform mathematical operations on floating point numbers with javascript.

We are using 2 js function for this
1. parseFloat   2. toPrecision


javascript snippet to solve js floating point numbers wrong output problem.

<script>
function cal()
{
 var a=0.1;
 var b=0.2;
 var c=parseFloat((a+b).toPrecision(10)); //Calculate like this

 alert("parseFloat((0.1 + 0.2).toPrecision(10)) = "+c);
}
</script>