JavaScript基本使用

javascript 的组成

 



<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<button>按钮</button>
<script type="text/javascript">
    document.write("sunck is a good man")
    console.log("sunckis")
    alert("sunck is handsome man ")
</script>

<script type="text/javascript">
    console.log("sunck is a nice man1")
</script>

</body>
</html>


===================================================



<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/test.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<button>按钮</button>


</body>
</html>

================js/test.js======================


 


/**
 * Created by Jeco on 2018/11/27.
 */
  console.log("<h1>我是外面的文件中</h1>")
    document.write("<h1>sunck is a good man</h1>")
    console.log("sunckis")
    alert("sunck is handsome man ")



问题点：1.无法注释

总结：1.JavaScript能内部和外部访问
     2.先外部再内部
     3.注意格式


 







            

            
posted @ 
2018-11-27 23:06 
freeengles 
阅读(296) 
评论(0) 
编辑 
收藏 
举报