how to get only numbers from string in 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 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.
}