我正在创建对象类型为Employee的数组,但是其中一个属性无法正常工作。
我使用的是Employee类型的对象数组,这些对象是通过构造函数语句块定义的。构造函数的一部分是,如果未定义昵称属性,则将名字用作昵称。另外,如果未定义移位,则将其设置为“ 1”。
当我调试时,我会看到总是对昵称和shift进行设置,就好像为这些属性未定义任何内容一样,即使它们没有定义。是什么赋予了?
详细信息:在Win7机器上的IE9上运行,也使用jquery2.1。
这是代码:
// make sure doc ready first
$(document).ready(function(){
function Employee(firstname, lastname, nickname, employeeID, shift, serviceTruck, pickupTruck, serviceTruckWO){
this.firstname = firstname;
this.lastname = lastname;
/*
* Check if the nickname is present. If not,
* set as lastname. Credit to SO for
* how to do this properly, ref
* http://stackoverflow.com/questions/27509/detecting-an-undefined-object-property-in-javascript
*/
if (typeof this.nickname === "undefined") {
this.nickname = this.firstname;
}
else {
this.nickname = nickname;
}
this.employeeID = employeeID;
if (typeof this.shift === "undefined") {
this.shift = "1";
}
else {
this.shift = shift;
}
this.serviceTruck = serviceTruck;
this.pickupTruck = pickupTruck;
this.serviceTruckWO = serviceTruckWO;
}
var Employees = new Array();
Employees[0] = new Employee("John", "Smith", "Smithy", "1234", "2", "ST1", "PU1", "WO1");
Employees[1] = new Employee("Jane", "Doe", "", "1235", "", "ST2", "PU2", "WO2");
});
最佳答案
在设置this.nickname
之前,请先对其进行检查,以便其类型仍未定义。
if (typeof nickname === "undefined") {
this.nickname = this.firstname;
}
else {
this.nickname = nickname;
}
关于javascript - JavaScript对象构造函数数组未按预期工作,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/24042091/