How to extract number from a string in javascript

Question

I have an element in javascript like follows:

 280ms

I want to extract 280 from the span element. How can I do it?

Answer 1

You could use the parseInt() function

var number = parseInt($("span").text())

Answer 2

in general for numbers no mather negative or positive

<div>
  blah blah
  <span>285blahblah</span>
</div>

var html= document.getElementsByTagName('div')[0].innerHTML;// or $('div').html() if jquery

var number = parseFloat(html.match(/-*[0-9]+/));

http://jsfiddle.net/R55mx/

Answer 3

Try the following

var strValue = // get 280m from the span
var intValue = parseInt(strValue.match(/[0-9]+/)[0], 10);

Answer 4

Change the span in:

<span id='msSpan'>280ms</span>

Then you can do:

alert($('#msSpan').text());

Answer 5

var myNumber= $('span').text().replace(/[^d.,]+/,'');

Answer 6

Try this:

var num = document.getElementById('spanID').innerText.match(/\d+/)[0];

jQuery version:

var num = $('span').text().match(/\d+/)[0]; // or $('#spanID') to get to the span

If you want as numeric value (and not as string), use parseInt:

var num = parseInt($('span').text().match(/\d+/)[0], 10);