MediaWiki:Test000.js

function Wikify0() {
  'use strict';
  var txt = '1234567',
      txt1 = '',
    wpTextbox1 = document.editform.wpTextbox1,
    winScroll = document.documentElement.scrollTop;
wpTextbox1.focus();
txt1 = wpTextbox1.value;
wpTextbox1.value = txt;

wpTextbox1.value = 'qwerty';
}