后台构建 html 字符串传到前台字符串转码（html）处理

知识在于总结，那就记下了吧！

例如后台 html 字符串是

var htmlStr="后台html字符串"；

转码

var html格式代码=decodeHtml（htmlStr）;

只需调用下面这个js方法就行了

 function decodeHtml(s) {
        var HTML_DECODE = {
            "&lt;": "<",
            "&gt;": ">",
            "&amp;": "&",
            "&nbsp;": " ",
            "&quot;": """,
            "&copy;": ""
        <span style="color: #008000;">//</span><span style="color: #008000;"> Add more</span>

        };
    </span><span style="color: #0000ff;">var</span> REGX_HTML_ENCODE = /"|&amp;|'|&lt;|&gt;|[x00-x20]|[x7F-xFF]|[u0100-u2700]/<span style="color: #000000;">g;

    </span><span style="color: #0000ff;">var</span> REGX_HTML_DECODE = /&amp;w+;|&amp;#(d+);/<span style="color: #000000;">g;

    </span><span style="color: #0000ff;">var</span> REGX_TRIM = /(^s*)|(s*$)/<span style="color: #000000;">g;

    s </span>= (s != undefined) ? s : ""<span style="color: #000000;">;
    </span><span style="color: #0000ff;">return</span> (<span style="color: #0000ff;">typeof</span> s != "string") ?<span style="color: #000000;"> s :
        s.replace(REGX_HTML_DECODE,
                  </span><span style="color: #0000ff;">function</span> ($0, $1<span style="color: #000000;">) {
                      </span><span style="color: #0000ff;">var</span> c = HTML_DECODE[$0<span style="color: #000000;">];
                      </span><span style="color: #0000ff;">if</span> (c ==<span style="color: #000000;"> undefined) {
                          </span><span style="color: #008000;">//</span><span style="color: #008000;"> Maybe is Entity Number</span>
                          <span style="color: #0000ff;">if</span> (!isNaN($1<span style="color: #000000;">)) {
                              c </span>= String.fromCharCode(($1 == 160) ? 32 : $1<span style="color: #000000;">);
                          } </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> {
                              c </span>= $0<span style="color: #000000;">;
                          }
                      }
                      </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> c;
                  });
};</span></pre>