Question

当我在下面的代码中定义的console.log函数中运行initialize时，如下所示：

console.log("Checking for Value_Of_Process_Type in Initialize Function ! :" +Value_Of_Process_Type);
console.log("Checking for Todays Date in Initialize Function ! :" +TodaysDate);

我为这两个变量得到undefined。但是，我在console.log函数的单击处理程序中定义了以下processEmployeeData中的两个变量的值：

console.log("Value_Of_Process_Type and Value_Of_TodaysDate are as follows :"+Value_Of_Process_Type+" and "+TodaysDate);

所以基本上，我的变量没有从函数processEmployeeData传递到initialize函数。我可以遵循任何其他方法来实现这一点或我正在做的任何错误吗？

function EmployeePage() {
    var self = this;
    this.employeeData = function (employee_number_) {

    // Initialize the page
    this.initialize = function () {

        var employee_number = AppManager.selectedData["employee_number"];
        console.log("employee_number By calling page:" +employee_number);

        var Value_Of_Process_Type = AppManager.selectedData["my_page.Process_Type"];
        var TodaysDate = AppManager.selectedData["my_page.date_value"];

        console.log("Checking for Value_Of_Process_Type in Initialize Function ! :" +Value_Of_Process_Type);  //outputs undefined here
        console.log("Checking for Todays Date in Initialize Function ! :" +TodaysDate);     //outputs undefined here             
    };


    this.processEmployeeData = function (collection_) {

       $("#myPanel").on('rowclick',function(event){
           row = event.args.rowindex;
           datarow = $("#myPanel").jqxGrid('getrowdata', row);
           var response = JSON.stringify(datarow,null,10);
           var Process_Type = datarow["processType"];
           AppManager.selectData("my_page.Process_Type", Process_Type);
           var  Value_Of_Process_Type = AppManager.selectedData["my_page.Process_Type"];
           var TodaysDate = datarow["date_value"];

           AppManager.selectData("my_page.date_value", TodaysDate);

           var Value_Of_TodaysDate  = AppManager.selectedData["my_page.TodaysDate"];

           console.log("Value_Of_Process_Type and Value_Of_TodaysDate are as follows :"+Value_Of_Process_Type+" and "+TodaysDate); // Prints the values
       });
    };

Answer 1

Javascript中的函数主要用作另一种类型的对象。因此，您可以为函数指定变量;在您的情况下，将声明更改为this.Value_Of_Process_Type=AppManager.selectedData["my_page.Process_Type"];应该允许您使用this.Value_Of_Process_Type在函数的其他位置访问它。

变量没有在同一个javascript页面中从一个函数传递到另一个函数

1 个答案: