梦之都
JavaScript教程
charAt
函数示例
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>JavaScript charAt() 函数示例</title> </head> <body> <script type="text/javascript"> var str = "www.dreamdu.com"; document.write(str.charAt(5)); document.write("<br />"); str = "www.dreamdu.com"; document.write(str.charAt(20)); document.write("<br />"); str = "www.dreamdu.com"; document.write(str.charAt(-5)); document.write("<br />"); str = "梦之都"; document.write(str.charAt(2)); </script> </body> </html>