Converting string to number in javascript/jQuery

Question

Been trying to convert the following to number:

    1
         


        

Answer 1

For your case, just use:

var votevalue = +$(this).data('votevalue');

There are some ways to convert string to number in javascript.

The best way:

var str = "1";
var num = +str; //simple enough and work with both int and float

You also can:

var str = "1";
var num = Number(str); //without new. work with both int and float

or

var str = "1";
var num = parseInt(str,10); //for integer number
var num = parseFloat(str); //for float number

DON'T:

var str = "1";
var num = new Number(str);  //num will be an object. typeof num == 'object'

Use parseInt only for special case, for example

var str = "ff";
var num = parseInt(str,16); //255

var str = "0xff";
var num = parseInt(str); //255