load script js

by YH Park

JavaScript

function loadScript(url, callback) {
	var script = document.createElement('script');
  script.src = url;
  if (callback)
  	script.onload = callback;
  document.getElementsByTagName('head')[0].appendChild(script);
}

loadScript("//code.jquery.com/jquery.min.js", function() {
	alert('import jQuery!')
});