Strip all non-numeric characters from string in JavaScript

Question

Consider a non-DOM scenario where you\'d want to remove all non-numeric characters from a string using JavaScript/ECMAScript. Any characters that are in range 0 - 9

Answer 1

Short function to remove all non-numeric characters but keep the decimal (and return the number):

parseNum = str => +str.replace(/[^.\d]/g, '');
let str = 'a1b2c.d3e';
console.log(parseNum(str));