专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <script> var str="Every man in the world! Every woman on earth!"; var patt=/man/g; var str2=str.replace(patt,"person"); document.write(str2+"<br>"); patt=/(wo)?man/g; patt.compile(patt); str2=str.replace(patt,"person"); document.write(str2); </script> </body> </html>
运行结果