JavaScript使用RegExp进行正则匹配的方法

本文实例讲述了JavaScript使用RegExp进行正则匹配的方法。分享给大家供大家参考。具体实现方法如下：

<script type="text/javascript">var matchedTimes = 0;//Match one d followed by one or more b"s followed by one d//Remember matched b"s and the following d//Ignore casemyRe= new RegExp（"d（b+）（d）", "ig"）;// 等价于 myReg = /d（b+）（d）/ig;myArray = myRe.exec（"ecDBDsdbbdz"）; // ecdbBdbsdbbdzconsole.log（"Regular Expression String: " + myRe.source）;console.log（"Is global? " + myRe.global）;console.log（"Ignore case? " + myRe.ignoreCase）;console.log（"Is mulitiline? " + myRe.multiline）;console.log（"------------------------------------------------"）;logInfo（myArray, myRe）;myArray = myRe.exec（"ecDBDsdbbdz"）;logInfo（myArray, myRe）;function logInfo（myArray, myRe） {matchedTimes++;console.log（"This is " + matchedTimes + " times match"）;console.log（"Original String: " + myArray.input）;console.log（"Match Result Array: [" + myArray + "]"）;console.log（"The 0-based index of the match in the string: " + myArray.index）;console.log（"The last matched characters: " + myArray[0]）;console.log（"The parenthesized substring matches [1]: " + myArray[1]）;console.log（"The parenthesized substring matches [2]: " + myArray[2]）;console.log（"The index at which to start the next match: " + myRe.lastIndex）;console.log（"-----------------------------------------------"）;}myRe2 = /^w+（d*）$/igconsole.log（"myRe2: " + myRe2.source）;//console.log（"myRe2 matches abc1? " + myRe2.test（"abc1"））;// 加上这行跑跑看结果，因为是global匹配，所以lastIndex会改变，//所以后面的myRe2.test（"abc"）当然就是falseconsole.log（"myRe2 matches abc? " + myRe2.test（"abc"））;</script>

希望本文所述对大家的javascript程序设计有所帮助。