1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Document</title>
6 </head>
7 <body>
8 <p>typeof操作符返回变量或者表达式的类型</p>
9 <p id="demo"></p>
10 <script>
11 document.getElementById("demo").innerHTML=
12 typeof "john"+"<br />"+
13 typeof "3.14"+"<br />"+
14 typeof false+"<br />"+
15 typeof [1,2,3,4]+"<br />"+
16 typeof{name:‘ john‘,age:34};
17
18 </script>
19 </body>
20 </html>
时间： 2024-07-29 13:10:52