toString() The toString() method is used to return a string version of the the number of a number base specified by the given radix parameter, allowing you to perform number base conversions. syntax: toString(radix) EXAMPLE var numOne = 32 var numTwo = a.toString(16) The above example, when used within a function, will return the value of the variable 'numTwo', which is '20'. The base-10 number as the value of variable numOne, which was 32, is converted to the hexadecimal (base 16) number '20'.