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Adding custom attributes to HTML tags special usage

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Author: User
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1 <!DOCTYPE HTML>2 <HTMLLang= "en">3 4 <Head>5     <MetaCharSet= "UTF-8">6     <title>Document7     </title>8     <styletype= "Text/css">9 . demo[aaaa]{Ten Color:Red; One     } A     </style> - </Head> -  the <Body> -     <DivAAAA class= "Demo">Demo</Div> -     <Divclass= "Demo">Demo</Div> - </Body> +  - </HTML>

This is a special usage that I have encountered in learning Vue, and Vue will have something similar to the HTML rendered to the interface: Data-v-47362a53, just a property, as if it were about the scoped of CSS.

There are similar selectors in jquery, but they have never been used.

There are many selectors in jquery, but a lot of them are seldom used in development, as long as they can get to the DOM, and occasionally encounter special, learning, is also very good.

Adding custom attributes to HTML tags special usage

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