jquery警报没有出现

use*_*ent 0 html jquery

我试图加载我的jquery脚本但是当我加载页面时,警报消息不会出现.文件main.js保存在我拥有index.html页面的同一个文件夹中,所以我用它来调用页面,但没有发生任何事情,我没有看到任何错误.

<script type="text/javascript" src="main.js"></script>
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这是我的html:

<!DOCTYPE html>
<html lang="en">
    <head>
      <title>Bootstrap Example</title>
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
      <link rel="stylesheet" href="main.css">
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">
    </head>

    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. In veniam doloremque voluptate debitis quaerat ipsum, officia, ad exercitationem placeat quasi nobis enim itaque. Adipisci ullam magnam sequi eum maiores, quia!</p>

    <script type="text/javascript" src="main.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
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jQuery的:

( function( $ ) {
    $(document).ready(function (){
        alert('This shit is not working');
    });
} )( jQuery );
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car*_*mba 7

试试这样

<!DOCTYPE html>
<html lang="en">
    <head>
      <title>Bootstrap Example</title>
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
      <link rel="stylesheet" href="main.css">
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">
    </head>

    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. In veniam doloremque voluptate debitis quaerat ipsum, officia, ad exercitationem placeat quasi nobis enim itaque. Adipisci ullam magnam sequi eum maiores, quia!</p>


    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <script type="text/javascript" src="main.js"></script>
</body>
</html>
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你需要先包含jQuery,然后才能使用它.