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var urlString = location.search;
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var typeQu = fieldName + "=";
var urlEnd = urlString.indexOf(typeQu);
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var paramsUrl = urlString.substring(urlEnd + typeQu.length);
var isEnd = paramsUrl.indexOf('&');
if (isEnd != -1) {
return paramsUrl.substring(0, isEnd);
}
else {
return paramsUrl;
}
}
return null;
}
}
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