Message any number on WhatsApp - Bookmarklet

wa.me.bookmarklet.js

javascript:void%20function(){let%20a=prompt(%22Type%20a%20phone%20number%22,%22+972%22);a=a.replace(/^0/,%22+972%22).replace(`${%22+972%22}0`,%22+972%22).replace(/-/g,%22%22),window.open(%22https://wa.me/%22+a,%22_blank%22)}();

wa.me.src.js

/*
 Create a bookmark and paste the above `wa.me.bookmarklet.js` code as its url
 Any international number with prefix, dashes etc. (+44-1234-567) or a simple Israeli number (0...) would work
 If you tweak this, generate as a bookmarklet using https://chriszarate.github.io/bookmarkleter/
*/
const PREFIX = '+972';

let phone = prompt('Type a phone number', PREFIX);
phone = phone
         .replace(/^0/, PREFIX)
         .replace(`${PREFIX}0`, PREFIX)
         .replace(/-/g, '');

window.open('https://wa.me/' + phone, '_blank');