BootWiki教程网
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>BootWiki 教程网</title> </head> <body> <script> var str="Visit RUNOOB.\n Learn JavaScript."; var patt1=/\n/g; document.write(str.search(patt1)); </script> </body> </html>
运行结果