JS中的贪婪与懒惰
JS中正则表达式的匹配
贪婪：最长匹配
懒惰：最短匹配
懒惰只需要在贪婪的基础上加?号即可
比如说字符串 aabacbadbabe
什么都不加，默认贪婪模式
a.*b 匹配的结果是 aabacbadbab，最长范围的匹配
非贪婪模式，加?号
a.*?b匹配的结果aab,acb,adb,ab，最短的匹配
JS中的贪婪与懒惰
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