获取url参数和rem屏幕适配

<script>
    var requestObj=(function(){
        var url=window.location.href;
        var str_key_val = url.substr(url.indexOf("?")); //获取url中"?"符后的字串
        var theRequest = new Object();
        if (str_key_val.indexOf("?") != -1) {
            var str = str_key_val.substr(1);
            strs = str.split("&");
            for(var i = 0; i < strs.length; i ++) {
                theRequest[strs[i].split("=")[0]]=(strs[i].split("=")[1]);
            }
        }
        return theRequest;
    }());
    function setRemFontSize(baseSize,baseWidth){
        //基本 字体大小
        var baseSize = baseSize||100;
        //设计图的基本宽度750  iphone6尺寸 (640*118比例)
        var baseWidth = baseWidth||640;
        var clientWidth = document.documentElement.clientWidth>=480?480:document.documentElement.clientWidth;
        clientWidth = document.documentElement.clientWidth<=320?320:document.documentElement.clientWidth;
        document.getElementsByTagName('html')[0].style.fontSize = clientWidth*baseSize/baseWidth+'px'
    }
    setRemFontSize();
    window.addEventListener("resize",function(){
        setTimeout(function(){setRemFontSize();},200)
    });
</script>