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JavaScript教程
substr
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 substr() 函数示例</title> </head> <body> <script type="text/javascript"> var str = "www.dreamdu.com"; document.write(str.substr(4, 7)); </script> </body> </html>