JS动态事件如何弄事件追踪？

Question

 <script type="text/javascript">
        arr_wx = ['76999','72999','73999','75999'];
        var wx_index = Math.floor((Math.random() * arr_wx.length));
        var stxlwx = arr_wx[wx_index];
        //alert(wx_img);return false;
 var stxlewm = "ysj";
    function ewmtp() {

            var xhtml = "< img src=\"qrcodes/" + stxlewm + ".jpg\">"

            $(".ewm").html(xhtml);
    }
$(function(){
document.getElementById('qrcode').src = 'qrcodes/'+ stxlewm +'.jpg';

})
    var d = new Date()
    var vYear = d.getFullYear()
    var vMon = d.getMonth() + 1
    var vDay = d.getDate()
    var h = d.getHours();
    var m = d.getMinutes();
    var se = d.getSeconds();
    s = vYear + "-" + (vMon < 10 ? "0" + vMon : vMon) + "-" + (vDay < 10 ? "0" + vDay : vDay);
    </script>

 <div class="top_tip">
          <div class="to_pc"> <img src="../abc/images/wxx.png" height="73" width="69"> </div>
          <div style="font-size:16px;line-height:160%; padding-top:10px;"> <b id="No1" class="wx_account" style="color: rgb(230, 0, 19); font-size:21px; background-color: rgb(255, 244, 92);">
            <div class="abc"><strong name="weixin"><span class="weixin">微信:<b id="weixin1"><script>document.write(stxlwx);</script></b></span></strong> (长按复制)</div>
            </b> <b> 添加微信！交流配方！</b> </div>
        </div>

 这是上面的JS代码  和DIV层
    现在要弄友盟的事件追踪 ！每个数字和字母   显示一次   用户复制   就显示那一个，而不是4个一起显示

Answer 1