5.贪婪和懒惰模式

详细讲解—>https://www.lazycoffee.com/articles/view?id=5d8dbbba94a925069182c5b4

    <script>
        /* 
        给量词的情况下  默认取最大值 默认是贪婪的
        */
        var str =   " a 'witch'nice'broom' and her 'broom' is one";
        console.log(str.match(/'.+'/g));//贪婪模式
        console.log(str.match(/'.+?'/g));//懒惰模式
    </script>
    <!-- 过滤标签 -->
    <script>
        var arr = "<p>dhauwidgwueah</p><p> <div></div><>< ><1>";
        /*这里加号是表面[]里面包含多个字符。*/
        var reg = /<[^\s]*>/g; 
        console.log(arr.match(reg));
        console.log(arr.match(/<[^\s]*?>/g));
    </script>