How to parse float with two decimal places in javascript?

Question

I have the following code. I would like to have it such that if price_result equals an integer, let\'s say 10, then I would like to add two decimal places. So 10 would be 10

Answer 1

When you use toFixed, it always returns the value as a string. This sometimes complicates the code. To avoid that, you can make an alternative method for Number.

Number.prototype.round = function(p) {
  p = p || 10;
  return parseFloat( this.toFixed(p) );
};

and use:

var n = 22 / 7; // 3.142857142857143
n.round(3); // 3.143

or simply:

(22/7).round(3); // 3.143