JavaScript encapsulation addLoadEvent implements the method of loading pages at the same time to execute multiple functions

This article describes the method of javascript encapsulating addLoadEvent to implement page loading and executing multiple functions at the same time. Share it for your reference, as follows:

If you want to execute multiple functions at the same time, you can put these functions into an array, then loop through the array and execute in the onload event, or use another convenient function addLoadEvent:

 function addLoadEvent(func) { var oldonload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { if (oldonload) { oldonload(); } func(); } } }

For more information about JavaScript related content, please check out the special topics of this site: "Summary of Common JavaScript Function Skills", "Summary of JavaScript Switching Special Effects and Skills", "Summary of JavaScript Search Algorithm Skills", "Summary of JavaScript Animation Special Effects and Skills", "Summary of JavaScript Errors and Debugging Skills", "Summary of JavaScript Data Structures and Algorithm Skills", "Summary of JavaScript Traversal Algorithm and Skills" and "Summary of JavaScript Mathematical Operation Usage"

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