extract a number from a string using JavaScript code example

Example 1: javascript extract number from string

// Html: <span id="foo">280ms</span>

var text = $('#foo').text();
var number = parseInt(text, 10);
alert(number);

// parseInt('ms120'.replace(/[^0-9\.]/g, ''), 10);

Example 2: js get number from string

thenum = "foo3bar5".match(/\d+/)[0] // "3"