摘要: <script> var a="hello javascript"; document.write("变量a的类型是:"+(typeof a)); document.write("<br>"); document.write("变量a的长度是:"+a.length);</script> 阅读全文
posted @ 2017-05-23 00:00 Rainyn 阅读(180) 评论(0) 推荐(0)