页面按钮埋点+跟踪location.search

<a href="javascript: void(0)" onclick="setUrl('https://baoxian.pingan.com/pa18shopnst/u/wx/product/annualNew/dispatch.shtml?WT.mc_id=yd-adsjan')" otitle="开门红活动-移动-一年期综合意外险" otype="button">
    <div class="btn"><img src=""></div>
</a>

function loadWTScript(a, b) {
    var c = document.createElement("script");
    c.type = "text/javascript",
            c.async = !0,
            c.src = a,
            dcsReady(c, b),
            document.getElementsByTagName("head")[0].appendChild(c)
}
function dcsReady(a, b) {
    a.readyState ? a.onreadystatechange = function () {
        ("loaded" == a.readyState || "complete" == a.readyState) && (a.onreadystatechange = null, b())
    } : a.onload = function () {
        b()
    }
}
loadWTScript('//www.pingan.com/app_js/sdc/prd/sdc9.js', function () {
    if (typeof(_tag) != "undefined") {
        _tag.dcsid = "dcs5w0txb10000wocrvqy1nqm_6n1p";  //dcsid参数用于设置日志记录在哪个文件里
        _tag.DCSext.platform = "pingan-wap";  //平台名字
        var s = _tag.dcsGetIdAsync();
        if (s)
            dcsReady(s, function () {
                _tag.dcsCollect()
            });
        else
            _tag.dcsCollect();
    }
})

function searchArgument(name){
        var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
        var search = window.location.search.split('?')[1] || '';
        var r = search.match(reg)||[];
        return r[2];
    }

    function setUrl(selfUrl) {
        var source = searchArgument('source');
        var id = searchArgument('WT.mc_id');
        var symbol = '?';
        if(/\?/g.test(selfUrl)) {
            symbol = '&'
        }
        var num1, num2;
        if (source) {
            num1 = source;
        } else {
            num1 = 'jkfmall-kmh';
        }
        if (id) {
            num2 = id;
        } else {
            num2 = 'jkfmall-kmh';
        }
        location.href = selfUrl + symbol + 'source=' + num1 + '&WT.mc_id=' + num2;
    }