Data Type Conversions

Number

var s = weight.toString();

Float

parseFloat("10.33")

Note: To round to a specified number of decimal places:

var num = 5.56789;
var n = num.toFixed(2);
5.57

Integer

Parse a string and return an integer

var value = parseInt(s, 10);
total = isNaN(value) ? 0 : value;

Note:

• The second parameter to parseInt forces the function to read a base 10 number.

• The method of checking to see if value is not a number is my idea - not a standard pattern.