get number from string javascript code example

Example 1: js extract only numbers from string

"1.23-45/6$7.8,9".replace(/[^0-9]/g,'')

// Response: "123456789"

Example 2: Javascript string to int

var myInt = parseInt("10.256"); //10
var myFloat = parseFloat("10.256"); //10.256

Example 3: js get number from string

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

Example 4: 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 5: string to int javascript

var text = '42px';
var integer = parseInt(text, 10);
// returns 42
let myNumber = Number("5.25"); //5.25

Example 6: javascript find a digit in str

var regex = /\d+/g;
var string = "Any string you want!";
var matches = string.match(regex);  // creates array from matches

if (matches){
  // There is a digit in the string.
} else {
  // No Digits found in the string.
}