MediaWiki:Zerospace EN.js

$(function () {

  var generateButton = document.getElementById('generate_alien_button');
  var generateOutput = document.getElementById('generate_alien_output');

  generateButton.innerHTML = '<input type="button" value="GO 1" onclick="get_alien();" />' +
    '<script type="application/javascript">' +
    'function get_alien()' +
    '{' +
    '  alert("I am an alert box!");' + 
    '}' +
    '</script>';

  generateOutput.innerHTML = '<input type="button" value="GO 2" onclick="alert("I am an alert box!");" />';

}());