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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <style>
- /* .box{
- color: red;
- } */
- /* [class=box]{
- color: red;
- } */
- /* [data-val="one"]{
- color: blue;
- } */
- /* [data-val]{
- color: green;
- } */
- /* [class~="box2"]{
- color: purple;
- } */
- [data-val|="one"]{
- color: purple;
- }
- </style>
- </head>
- <body>
- <div class="box box2 box3" data-val="one-box">
- hello
- </div>
- <div data-val="one-div">你好</div>
- <div data-val="two-box">
- world
- </div>
- </body>
- </html>
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