Question

我有一个函数A()，它调用函数B(x, y);，再次调用C(p,q);

A() --> B(x,y) -->C (p,q)

function A() {
    B(x,y)
}

B()处理JSONStore以提取与函数C相关的数据，在JSONStore数据提取结束之前，脚本调用func C(p,q)以避免它我使用setTimeOut并延迟1秒

function B(x,y) {
    if(p===undefined || q===undefined) {
        setTimeout(function() {
            C(p,q); 
        }, 1000);
    }    
}

但是我收到错误，因为Uncaught ReferenceError：方法未定义M979:192 C VM979:192 (anonymous function)

function C(p,q) {
    .........
}

我已经阅读了许多与setTimeOut相关的博客，并发现了这种方式。

我的代码：

function Submit_Data() {    
    var ChatWindow_Height = 650;
    var ChatWindow_Width = 570;

    window.open("Live Chat", "chat", "height=" + ChatWindow_Height + ", width = " + ChatWindow_Width);

    post("https://xyz/abc/StartChat.aspx", "post");
}

var regUserName,regUserMobile;

function post(path, method) {
    method = method || "post"; // Set method to post by default if not specified.

    var collectionName = 'Registration';
    var JSONStoreCollections = {};
    JSONStoreCollections[collectionName] = {};
    JSONStoreCollections[collectionName].searchFields = {uName: 'string'};

    WL.JSONStore.init(JSONStoreCollections)
    .then(function () {
        WL.JSONStore.get(collectionName).findAll().then(function (res) {    
            WL.Logger.info('Registration retrived is :', res);
            console.log(JSON.stringify(res));

            console.log(res[0].json.userName+"  "+res[0].json.userMobile+" "+res[0].json.userPass+" "+res[0].json.userRePass);

            regUserName=res[0].json.userName;
            regUserMobile=res[0].json.userPass;

            console.log("For Chat Data 1 is "+regUserName+"  "+regUserMobile);
        })
        .fail(function (err) {
            WL.Logger.error("Failed authentication "+err);
        });
    })
    .fail(function (err) {
        alert("Error is "+err);
    });
    if(regUserName===undefined || regUserMobile===undefined) {
        setTimeout(function()   {
            openChat(regUserName,regUserName); // Error Here
        }, 1000);
    }
}

function openChat(regUserName,regUserName) {
    // The rest of this code assumes you are not using a library.
    // It can be made less wordy if you use one.
    var form = document.createElement("form");
    form.setAttribute("method", method);
    form.setAttribute("action", path);
    form.setAttribute("target", "chat");

    var hiddenField1 = document.createElement("input");
    var hiddenField2 = document.createElement("input");
    var hiddenField3 = document.createElement("input"); 

    console.log("For Chat Data 3 is "+regUserName+"  "+regUserMobile);

    hiddenField1.setAttribute("type", "hidden");
    hiddenField1.setAttribute("id", "vName");
    hiddenField1.setAttribute("name", "vName");
    hiddenField1.setAttribute("value", regUserName);

    hiddenField2.setAttribute("type", "hidden");
    hiddenField2.setAttribute("id", "mobile");
    hiddenField2.setAttribute("name", "21512");
    hiddenField2.setAttribute("value", regUserMobile);

    hiddenField3.setAttribute("type", "hidden");
    hiddenField3.setAttribute("id", "state");
    hiddenField3.setAttribute("name", "21524");
    hiddenField3.setAttribute("value", "25");

    document.body.appendChild(form);
    form.submit();
}

Answer 1

这些行不合逻辑：

if(regUserName===undefined || regUserMobile===undefined) {
    setTimeout(function()   {
        openChat(regUserName,regUserName); // Error Here
    }, 1000);
}

只需在openChat回调中致电JSONStore.get()：

    regUserMobile=res[0].json.userPass;
    console.log("For Chat Data 1 is "+regUserName+"  "+regUserMobile);

    if(regUserName===undefined || regUserMobile===undefined) {
        openChat(regUserName,regUserName);
    }
})

您也可能希望将===替换为!===。我想这可能是为了检查参数是否已填满。

Answer 2

我尝试了你的代码并且我得到了与你提到的相同的错误，我已经调整了代码，现在使用这段代码只需根据你的需要修改URL链接。

function Submit_Data()
{   
    var ChatWindow_Height = 650;
    var ChatWindow_Width = 570;
    window.open("VodaFone Live Chat", "chat", "height=" + ChatWindow_Height + ", width = " + ChatWindow_Width);
    post("https://xyz/abc/StartChat.aspx", "post");
}

var regUserName,regUserMobile;
function post(path, method) {
    method = method || "post"; // Set method to post by default if not specified.

    // The rest of this code assumes you are not using a library.
    // It can be made less wordy if you use one.
    var form = document.createElement("form");
    form.setAttribute("method", method);
    form.setAttribute("action", path);
    form.setAttribute("target", "chat");

    var hiddenField1 = document.createElement("input");
    var hiddenField2 = document.createElement("input");
    var hiddenField3 = document.createElement("input"); 

    var collectionName = 'Registration';
    var JSONStoreCollections = {};
    JSONStoreCollections[collectionName] = {};
    JSONStoreCollections[collectionName].searchFields = {uName: 'string'};
    WL.JSONStore.init(JSONStoreCollections) 

    .then(function () 
            {
        WL.JSONStore.get(collectionName).findAll().then(function (res) 
                {   
            WL.Logger.info('Registration retrived is :', res);
            console.log(JSON.stringify(res));

            console.log(res[0].json.userName+"  "+res[0].json.userMobile+" "+res[0].json.userPass+" "+res[0].json.userRePass);

            regUserName=res[0].json.userName;
            regUserMobile=res[0].json.userMobile;

            hiddenField1.setAttribute("type", "hidden");
            hiddenField1.setAttribute("id", "vName");
            hiddenField1.setAttribute("name", "vName");
            hiddenField1.setAttribute("value", regUserName);

            hiddenField2.setAttribute("type", "hidden");
            hiddenField2.setAttribute("id", "mobile");
            hiddenField2.setAttribute("name", "21512");
            hiddenField2.setAttribute("value", regUserMobile);

            hiddenField3.setAttribute("type", "hidden");
            hiddenField3.setAttribute("id", "state");
            hiddenField3.setAttribute("name", "21524");
            hiddenField3.setAttribute("value", "25");


            console.log("For Chat Data 1 is "+regUserName+"  "+regUserMobile);

                })
                .fail(function (err) 
                        {
                    WL.Logger.error("Failed authentication "+err);
                        });
            })
            .fail(function (err) 
                    {
                alert("Error is "+err);
                    });

    if(regUserName===undefined || regUserMobile===undefined)
    {
        setTimeout(function()   {
            form.appendChild(hiddenField1);
            form.appendChild(hiddenField2);
            form.appendChild(hiddenField3);

            document.body.appendChild(form);
            form.submit();

                }, 1000);
    }
}

我知道这是不同的方式，可能不是可取的，但这就是我如何解决它。

Answer 3

我厌倦了这件作品并且工作正常：

function A() {
    B(1, 2)
}

function B(x,y) {
    if(true) {
        setTimeout(function() {
            C(3,4); 
        }, 1000);
    }    
}

function C(p,q) {
    alert('in c')
}

A()

在setTimeOut函数中传递多个参数抛出未捕获的ReferenceError：方法未定义（匿名函数）？

3 个答案: