html转码

目的：

• 避免执行危险代码
• 增加接口复杂度，防刷

代码

const HtmlUtil = {
  /*1.用正则表达式实现html转码*/
  htmlEncodeByRegExp: function(str: string) {
    var 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;
  },
  /*2.用正则表达式实现html解码*/
  htmlDecodeByRegExp: function(str: string) {
    var s = '';
    if (str.length == 0) return '';
    s = str.replace(/&amp;/g, '&');
    s = s.replace(/&lt;/g, '<');
    s = s.replace(/&gt;/g, '>');
    s = s.replace(/&nbsp;/g, ' ');
    s = s.replace(/&#39;/g, "'");
    s = s.replace(/&quot;/g, '"');
    return s;
  },
};