一、非

1、只获取数字或字母

<script>
        var str = "abc123";
        var reg = /[^abc]/g;
        console.log(str.replace(reg,"*"));
        var test = "?@hello123-";
        var reg = /[^\d]/g
        console.log(test.replace(reg,"*"))
    </script>

1.1、只获取数字

<script>
        var str = "<span>2395人参观</span>-<span>46人评价</span>"
        var reg = /[^\d-]/g;
        var res = str.replace(reg,"");
        console.log(res.split("-"));
    </script>

2、过滤标签

var reg = /<[^<>]+>/g

<script>
        var str = "<p>塞斯额啊</p><br/><span>666</span>"
        var reg = /<[^<>]+>/g   //html标签的正则
        console.log(str.replace(reg,""))
    </script>