HTML页面之间的参数传递

function request(params) {
        var url = location.href;
        var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
        var paraObj = { };
        for (i = 0; j = paraString[i]; i++) {
            paraObj[j.substring(0, j.indexOf("=")).toLowerCase()] = j.substring(j.indexOf("=") + 1, j.length);
        }
        var returnValue = paraObj[params.toLowerCase()];
        if (typeof (returnValue) == "undefined") {
            return "";
        } else {
            return returnValue;
        }
    }