總是返回false | Javascript |對象

Question

我正在一個項目中，我從另一個對象/函數引用一個變量。然而，我總是返回false。我不確定我是否正確調用它。

下面是驗證功能：

app.validation = function(){ 
    'use strict'; 
    var validCheck = true; 

    if((app.process.user.length < 3) || (app.process.user.length > 50)){ 
     validCheck = false; 
     window.alert("The username is not acceptable. Example: username"); 
    }; 
    if((app.process.name.length < 3) || (app.process.name.length > 50) || (!app.process.name.indexOf(" ") === -1)){ 
     validCheck = false; 
     window.alert("The name is not acceptable. Example: John Smith"); 
    }; 
    if((app.process.email.length < 3) || (app.process.email.length > 100) || (!app.process.email.indexOf("@") === -1)){ 
     validCheck = false; 
     window.alert("The email is not acceptable. Example: john@mail.co.uk"); 
    }; 
    if((app.process.passlength < 6) || (app.process.pass.length > 20)){ 
     validCheck = false; 
     window.alert("The password is not acceptable. Example: password"); 
    }; 
    if((app.process.age.length < 1) || (app.process.age.length > 2)){ 
     validCheck = false; 
     window.alert("The age is not acceptable. Example: 22"); 
    }; 
    return validCheck; 
}; 

這是對變量的存儲：

app.process = function(){ 
    'use strict'; 
    var user = document.getElementById("user").value; 
    var name = document.getElementById("name").value; 
    var email = document.getElementById("email").value; 
    var pass = document.getElementById("pass").value; 
    var age = document.getElementById("age").value; 

    var test = app.validation(); 
    console.log(test); 
    if(!test){ 
     window.alert("Try Again."); 
    }else{ 
     app.reset(); 
     app.members[app.members.length] = new app.Member(user, name, email, pass, age); 
     app.printMembers(); 
    }; 
}; 

還有更多這個代碼但是是到大在這裏發表。這是導致問題的兩個功能。

Answer 1

您不能訪問app.process變量，因爲它們對函數是私有的。您需要以某種方式將這些值傳遞給app.validation以驗證它們。

我會做的方式是

var data = { 
    user: document.getElementById("user").value, 
    name: document.getElementById("name").value, 
    email: document.getElementById("email").value, 
    pass: document.getElementById("pass").value, 
    age: document.getElementById("age").value 
}; 

var test = app.validation(data); 

而且在驗證

app.validation = function(data) { ... 

而且每次更換爲app.process.fielddata.field。