After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：JavaScript introduction and comments
<script>xxx<script>，用在html页面中插入jsX 1.src：可选。表示包含执行代码的外部文件 2.type：必需。可以看做是language替代品。表示代码使用脚本语言的内容类型。例：<script type="text/javascript">
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