Loading Javascript file by using document.createElement() -- The orginal article is Javascript Async Loading
The Javascript file is alert.js
The test code as below:
<script language="javascript" type="text/javascript"> function loadjs(script_filename) { var script = document.createElement('script'); script.setAttribute('type', 'text/javascript'); script.setAttribute('src', script_filename); script.setAttribute('id', 'coolshell_script_id'); script_id = document.getElementById('coolshell_script_id'); if(script_id){ document.getElementsByTagName('head')[0].removeChild(script_id); } document.getElementsByTagName('head')[0].appendChild(script); } var script = './alert.js'; loadjs(script); </script>