javascript - 如何调用Javascript对象中定义的所有变量？

Question

我正在尝试在 JavaScript 中练习构造函数，这是我目前的代码-

    function officePpl(name,exp,gender,age){
        this.empName = name;
        this.empExp = exp;
        this.empGender = gender;
        this.empAge = age;
    }
    var emp1 = new officePpl("John", 4, "Male", 29);
    var emp2 = new officePpl("Mathew", 4, "Male", 29);
    var emp3 = new officePpl("Smith", 4, "Male", 31);
    showEmp = document.getElementById("empdetails");

    for(var i =0; i<officePpl.length;i++){
        showEmp.innerHTML += this.empName + " " + this.empAge + "<br />";
    }

我想显示所有创建的变量并显示它们。我正在运行一个 for 循环来获取长度，但该循环仅显示未定义的未定义。

你能建议我如何输出所有变量(emp1、emp2、emp3、emp4)而不单独调用它们吗？

谢谢。

Answer 1

我猜你需要的是数组，而不是单独的变量..

function officePpl(name,exp,gender,age){
    this.empName = name;
    this.empExp = exp;
    this.empGender = gender;
    this.empAge = age;
}
var emp = [ new officePpl("John", 4, "Male", 29),
            new officePpl("Mathew", 4, "Male", 29),
            new officePpl("Smith", 4, "Male", 31) ];
showEmp = document.getElementById("empdetails");

for(var i =0; i<emp.length;i++){
    showEmp.innerHTML += emp[i].empName + " " + emp[i].empAge + "<br />";
}