Converting string to int/float in jQuery

Question

I am getting a value from a div :

<div id="test">100</div>

And what I want to do is to get the value with jQuery, raise with 50% and show the value.

$number= $('#test').text() //getting the value, without parseInt or parseFloat?
$newNumber = $number * 0,5 //show the result of this

I often end up with NaN, so I'd like to have a guidance on that. Thank you.

Use parseFloat(): var $number = parseFloat($('#test').text(), 10) — Arnaud Le Blanc
– Arnaud Le Blanc, Commented May 11, 2014 at 13:31
@arnaud576875 Itsn't at all, but using an useless parameter is, at the opposite, ugly, parseFloat accepting only one parameter ;) — A. Wolff
– A. Wolff, Commented May 11, 2014 at 13:36

Gautam G · Accepted Answer · 2014-05-11 13:49:54Z

2

Suppose we have following markups:

<div id="test">100</div>
<div id="result"></div>

what you are looking for can be achieved as following (without using parseInt() or parseFloat() functions)

var number = $('#test').text();
var result = Number(number) + (number * 0.5);
$('#result').html(result);

answered May 11, 2014 at 13:49

Gautam G

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Comments

A. Wolff · Accepted Answer · 2014-05-11 13:33:23Z

2

You have error in your code, just fix it with:

$number * 0.5

Using dot, not comma.

answered May 11, 2014 at 13:33

A. Wolff

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