parsing decimals into a span

<input value="123" />
<span></span>

$('input').change(function (){
    var val = $(this).val().toFixed(2);
    $('span').text(val);
});

I have tried the code above but can't seem to get the decimal on the text() is just shows as 123. This is my first time exp开发者_如何学Pythonerimentind with toFixed()

just in case toFixed() is a js native method not a jquery

toFixed is a method that you would call on a number, not on a string. You need to parse the string to a number:

var val = parseFloat($(this).val(), 10).toFixed(2);

Live demo here: http://jsfiddle.net/QrW5C/

Look at the error console. You should see something like:

TypeError: Object 123 has no method 'toFixed'

Strings don't have the toFixed() method. Only numbers have. Convert the value to a number first (e.g. by prepending +):

var val = (+$(this).val()).toFixed(2);

DEMO

You need to parse it:

var NumericValue = parseFloat($(this).val())
var val = NumericValue .toFixed(2);

info here: http://www.bennadel.com/blog/1013-Javascript-Number-toFixed-Method.htm

also:

<span></spam> (?)