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Javascript 笔试题总结

给定一个URL字符串，要求用js实现一个函数，找出其中的query值
例如：URL：http://www.qunar.com/plane/queryPlane.html?startTime=xxxx&endTime=xxxxx#tags

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function getQueryParam(url, name) {
    var a = document.createElement('a');
    a.href = url;
    var query = a.search;
    var len = query.length;
    var reg = /[?&]([^\d]\w+)=(\w+)/gi; 
    var res = reg.exec(query);
    while (reg.lastIndex < len && res[1] && res[1] !== name) {
        res = reg.exec(query);
    }  
    return res[2];
}