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

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);