1. <!DOCTYPE html>
    2. <html lang="en">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>1-1String-length练习</title>
    8.     <script type="text/javascript">
    10.         //** length练习，查看字符串长度  **  重点
    11.         var str = "home.yyy.com/index.jsp?code=xy";
    12.         alert(str.length);
    14.     </script>
    16. </head>
    17. <body>
    19. </body>
    20. </html>