chop unused decimals with javascript

Question

I\'ve got a currency input and need to return only significant digits. The input always has two decimal places, so:

4.00  ->  4
4.10  ->  4.1
4.01  ->           


        

Answer 1

string to string: parseFloat(value).toFixed(2);
string to number: +(parseFloat(value).toFixed(2))
number to number: Math.round(value*100)/100;
number to string: (Math.round(value*100)/100).toFixed(2);