javascript - Why doesn't the one that automatically changes the background of the two scripts execute?-PHP Chinese Network Q&A

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javascript - Why doesn't the one that automatically changes the background of the two scripts execute?

天蓬老师 2017-06-08 11:02:49

794

Some time ago, I confessed that the webpage was very interesting, so I tried to watch the video and wrote the code, but why was the script for automatically changing the background not executed? Please give me some advice## Only one of the two scripts has been implemented

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typecho2017-06-08 11:04:49 3 floor

Usewindow.addEventListener('load',function(){})to replacewindow.onload = function(){}
Keywords:DOM0 level eventsandDOM2 level events

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刘奇2017-06-08 11:04:49 2 floor

The window.onload event is unique in js. No matter how many you write, only one will be executed, and it is the last one, so you can consider using $(function(){}) in jq. It will not appear due to The order of the browser will change the rendering, and the browser will render according to the amount of $(function(){}).

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学习ing2017-06-08 11:04:49 1 floor

The window.onload event can only be executed once. If you have already referenced jquery.min.js, you can try changing it to $(function(){}), which can be referenced multiple times.

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