flter number 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 letters as number

const toChars = n => `${n >= 26 ? toChars(Math.floor(n / 26) - 1) : ''}${'ABCDEFGHIJKLMNOPQRSTUVWXYZ'[n % 26]}`;

// Examples
toChars(0);     // A
toChars(1);     // B
toChars(25);    // Z

Example 3: 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.
}

Example 4: javascript convert string to number

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