如何将搜索的内联脚本移动到单独的 js 文件中?

How can I move the inline scripts for my search out into a separate js file?

我的页面上有一个搜索栏,但我需要将代码移出到一个单独的 js 文件中,以便将所有内容作为 google 浏览器扩展提交。现在HTML:

里面是这样写的
<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>Search</title>
  <link rel="stylesheet" type="text/css" href="popup.css" />
</head>

<body>

  <div id="searchContainer">
    <script type="text/javascript">
      function dos12(g1) {
        window.open('https://www.google.com/#q=' + g1, '_self', 'G1window');
      }
    </script>

    <form onsubmit="dos12(this.g1.value); return false;">
      <input id="field" type="text" name="g1" size="20" placeholder="Google Search" autofocus="autofocus" />
      <div id="delete"><span id="x">x</span></div>
      <input id="submit" name="submit" type="submit" value="Search" />
    </form>
  </div>

</body>

</html>

我已将其他脚本移出 HTML 并放入 js 文件中,并将