JQuery implements simple scrolling animation effect _ jquery

This article describes in detail the Code related to jQuery's simple scrolling animation effect, which has some reference value. If you are interested, you can refer to the idea of animation, click an element on the page to scroll to the specified position. The following describes my research results of Baidu in three hours:

First, the html section:

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Add until the scroll bar appears
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Add two elements as buttons first. Then add the following elements:

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Add until the scroll bar appears
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Href = "javascript:;" indicates that element a can activate javascript code. If no value is added, the code is invalid. UseYou do not need to add.
Then introduce jquery and write the code: