Question

我有一个ColdFusion方法getData（），它返回一个查询对象，如下所示：

CustomerCode  ServiceCode  SubscriberCode  Status    UserName
-------------------------------------------------------------
811101        8            gertjan         OPEN      gertjan@blah.net
811101        8            gertjan         CLOSING   gertjan@blah.net
811101        2            99652444        CLOSED    gertjan@blah.net
811101        2            99655000        OPEN      gertjan@blah.net

注意前两行 - 除了Status OPEN和CLOSING之外完全相同。

以下函数为ServiceCode = 8且Status为OPEN或CLOSING的每一行创建一个新的select选项，前两行都是这种情况。

数据最终来自我无法控制的网络服务。我需要更改jQuery，如果同一个ServiceCode / SubscriberCode组合存在OPEN和CLOSING记录，前两行就是这种情况，那么只为OPEN记录创建一个选项。

function getInternetLines(){
        var CustomerCode=global_customerCode;
        var SessionID=global_sessionID;
        var lines=[];
        $.getJSON("/system.cfc?method=getData&returnformat=json&queryformat=column",
               {"SessionID":SessionID,"CustomerCode":CustomerCode}, 
               function(res,code) {
            if(res.ROWCOUNT > 0){
                for(var i=0; i<res.ROWCOUNT; i++) {
                    var ServiceCode = res.DATA.ServiceCode[i];
                    var SubscriberCode = res.DATA.SubscriberCode[i];
                    var Status = res.DATA.Status[i];
                    if(ServiceCode == 8 && (Status == 'OPEN' || Status == 'CLOSING')){
                        lines.push(SubscriberCode);
                        $('#selInternet').append(
                            $('<option></option>').val(SubscriberCode).html(SubscriberCode)
                        );
                    }
                }
                global_internet_lines = lines;
                if(lines.length == 0){
                    $('#divBroadbandUsage').html('No Active Broadband Connections.');
                }
            }else{
                $('#divBroadbandUsage').html('No Active Broadband Connections.');
            }
        });
    }

HTML

<select name="selInternet" id="selInternet" style="width:120px">
</select>

如果没有相同数据集的多个循环，那么在获得最干净的方法时，任何帮助都会非常受欢迎。

Answer 1

您需要在读取数据时保留哈希值，如果已找到“打开”，则忽略数据。然后遍历哈希项并输出数据：

if(res.ROWCOUNT > 0){
    var hash = {};  // Hash to store data
    for(var i=0; i<res.ROWCOUNT; i++) {
        var ServiceCode = res.DATA.ServiceCode[i];
        var SubscriberCode = res.DATA.SubscriberCode[i];
        var Status = res.DATA.Status[i];
        if(ServiceCode == 8 && (Status == 'OPEN' || Status == 'CLOSING')){
             if( hash[SubscriberCode] != undefined && hash[SubscriberCode].status == 'OPEN' ) {
                 // If we already have OPEN, don't load the data
                 continue;
             } else {
                 // Else override whatever data you have for this SubscriberCode
                 hash[SubscriberCode] = { status: Status, subscriber: SubscriberCode, service: ServiceCode }; 
             }
        }
    }

    // loop through the hash and output the options
    for(var x in hash) {
        lines.push(hash[x].subscriber);
        $('#selInternet').append(
            $('<option></option>').val(hash[x].subscriber).html(hash[x].subscriber)
        );
    }

    global_internet_lines = lines;
    if(lines.length == 0){
        $('#divBroadbandUsage').html('No Active Broadband Connections.');
    }
}

我不确定你的案件是什么，但这包括我相信你的描述。我意识到将哈希密钥存储在数据中是很愚蠢的，但为了演示，这就是你如何检索其他数据。此代码存储Status，SubscriberCode和ServiceCode，但您的示例仅使用SubscribercCode。如果确实如此，那就更简单了：

if(res.ROWCOUNT > 0){
    var hash = {};  // Hash to store data
    for(var i=0; i<res.ROWCOUNT; i++) {
        var ServiceCode = res.DATA.ServiceCode[i];
        var SubscriberCode = res.DATA.SubscriberCode[i];
        var Status = res.DATA.Status[i];
        if(ServiceCode == 8 && (Status == 'OPEN' || Status == 'CLOSING')){
             // If we see the subscriber code, add it to our hash
             hash[SubscriberCode] = 1; 
        }
    }

    // loop through the hash and output the options
    for(var sub in hash) {
        lines.push(sub);
        $('#selInternet').append(
            $('<option></option>').val(sub).html(sub)
        );
    }

    global_internet_lines = lines;
    if(lines.length == 0){
        $('#divBroadbandUsage').html('No Active Broadband Connections.');
    }
}

jQuery / JSON排序结果

HTML

1 个答案: