//把url的参数部分转化成json对象

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parseQueryString: function (url) {
var reg_url = /^[^\?]+\?([\w\W]+)$/,
reg_para = /([^&=]+)=([\w\W]*?)(&|$|#)/g,
arr_url = reg_url.exec(url),
ret = {};
if (arr_url && arr_url[1]) {
var str_para = arr_url[1], result;
while ((result = reg_para.exec(str_para)) != null) {
ret[result[1]] = result[2];
}
}
return ret;
}

// 通过key获取url中的参数值

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getQueryString: function (name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
var r = window.location.search.substr(1).match(reg);
if (r != null) return unescape(r[2]);
return null;
}