摘要:
1.通过id获取 <div id="btn"> <script> let btn=document.getElementById('btn') </script><div>2.通过class获取 <div class="btn"> <script> let btn=document.getEleme 阅读全文
posted @ 2021-12-09 11:07
sjn2002
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摘要:
1.内部引入 <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body></body></html> <script type="text/javascript">ale 阅读全文
posted @ 2021-12-09 10:35
sjn2002
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