Simple example of dynamically loading js files

This article describes the method of dynamically loading js files. Share it for your reference, as follows:

 function loadScript(url){var hd = document.getElementsByTagName('head')[0],js = document.createElement('script');js.src = url;js.type = "text/JavaScript";if(js.addEventListener){js.addEventListener("load", function(){alert('loaded');}, false);}else if(js.attachEvent){js.attachEvent("onreadystatechange", function(){if(js.readyState === "loaded" || js.readyState === "complete"){alert('loaded');}});}hd.appendChild(js);}

For more information about JavaScript related content, please check out the topics of this site: "Summary of JavaScript switching effects and techniques", "Summary of JavaScript search algorithm skills", "Summary of JavaScript animation effects and techniques", "Summary of JavaScript errors and debugging techniques", "Summary of JavaScript data structures and algorithm skills", "Summary of JavaScript traversal algorithms and techniques", and "Summary of JavaScript mathematical operations usage"

I hope this article will be helpful to everyone's JavaScript programming.