Method of dynamically loading jQuery_jquery

The example in this article describes the method of dynamically loading jQuery. Share it with everyone for your reference. The details are as follows:

function checkJquery() {
 if(!(window.jQuery)) {
  var s = document.createElement('script');
  s.setAttribute('src', 'http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js');
  s.setAttribute('type', 'text/javascript');
  document.getElementsByTagName('head')[0].appendChild(s);
 }
}

I hope this article will be helpful to everyone’s jQuery programming.