html转义代码，v-html 显示原始html字符串

methods: 
 htmlEscape(str) {

      let s = "";

      if (str.length == 0) return "";

      s = str.replace(/&/g, "&");

      s = s.replace(/</g, "&lt;");

      s = s.replace(/>/g, "&gt;");

      s = s.replace(/ /g, "&nbsp;");

      s = s.replace(/\'/g, "&#39;");

      s = s.replace(/\"/g, "&quot;");

      return s;

    }

调用：

let htmlStr = "<a href='http://www.baidu.com'>前往百度</a>"

this.htmlEscape(htmlStr )