/// <summary>

/// 获取url参数

/// 王洪岐

/// </summary>

function QueryString(fieldName) {

var urlString = document.location.search;

if (urlString != null) {

var typeQu = fieldName + "=";

var urlEnd = urlString.indexOf(typeQu);

if (urlEnd != -1) {

var paramsUrl = urlString.substring(urlEnd + typeQu.length);

var isEnd = paramsUrl.indexOf('&');

if (isEnd != -1) {

return paramsUrl.substring(0, isEnd);

}

else {

return paramsUrl;

}

}

else {

return null;

}

}

else {

return null;

}

}