Question

我有一个问题。我正在尝试为项目创建一个AJAX框架（因为它们不允许使用第三方框架，如jQuery）。但是，当我在onreadystatechange函数中调用动态命名空间时，我遇到了问题。

这是样本ajax函数：

/**
 * This function wraps the XMLHttpRequest function.
 * 
 * String @param params.method - GET/POST 
 * String @param params.type - xml/text, 
 * String @param params.url - the target URL
 * String @param params.onSuccess - the function to be called after a successful request
 * String @param params.data - parameters that need to be passed to the target URL
 * String @param params.asynchronous -  true/false
 */
PTM.ajax = function(params)
{
    var request = null;
    var method = null;
    var url = null;
    var data = "client_id=" + PTM.clientId;
    var asynchronous = (params.asynchronous == null) ? true : params.asynchronous;

    // Instantiate the correct XML Http Request Object
    var msxmls = [
                  "Msxml2.XMLHTTP.5.0",
                  "Msxml2.XMLHTTP.4.0",
                  "Msxml2.XMLHTTP.3.0",
                  "Msxml2.XMLHTTP",
                  "Microsoft.XMLHTTP"
    ];

    for (var i=0; i < msxmls.length; i++)
    {
        try
        {
            request = new ActiveXObject(msxmls[i]);
        }
        catch (e) {}
    }
    if (request == null) throw new Error("Could not instantiate XMLHttpRequest");

    // Response
    request.onreadystatechange = function()
    {   
        // The response is ready.
        if ((request.readyState == 4) && (request.status == 200))
        {
            // Response Type
            var response_type = (params.type == 'xml') ? request.responseXML : request.responseText;
            PTM[params.onSuccess](response_type);           
        }
    };

    // HTTP Verb to be used.
    method = params.method.toUpperCase();

    // Data
    data = (params.data == null) ? data : data + "&" + params.data; 

    // URL
    url = (method == "GET") ? params.url + "?" + data : params.url;

    request.open(method, url, asynchronous);
    request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    request.setRequestHeader("Content-length", data.length);
    request.send(data); 
};

这就是我使用上述功能的方法：

PTM.ajax({
    method: "POST",
    type: "txt", 
    url: urlTarget, // please delete this line when using actual code
    onSuccess: callbackFunction, 
    data: "data=" + data,
    asynchronous: false
});

如果我希望'callbackFunction'在另一个名称空间中怎么办？说'INIT.testCallbackFunction（）'？

这部分是我遇到问题的地方。

            // Response Type
            var response_type = (params.type == 'xml') ? request.responseXML : request.responseText;
            PTM[params.onSuccess](response_type);           
        }

当我将“PTM”命名空间作为参数传递时，如何使其动态化？

AJAX Javascript动态命名空间

0 个答案: