Javascript 在我的数组中推送未定义的项?
我正在创建一个对象并将其推送到一个数组中。提醒,但未定义的is也会得到推送。为什么?此代码将为我提供工作Javascript 在我的数组中推送未定义的项?,javascript,object,Javascript,Object,我正在创建一个对象并将其推送到一个数组中。提醒,但未定义的is也会得到推送。为什么?此代码将为我提供工作[{description:'Get to work in time',set_title:'work related',},未定义] var ReminderSet = function(set_name) { this.set_name = set_name; this.reminders = []; }; ReminderSet.
[{description:'Get to work in time',set_title:'work related',},未定义]
var ReminderSet = function(set_name) {
this.set_name = set_name;
this.reminders = [];
};
ReminderSet.prototype.add = function(reminder, title) {
this.reminders.push(reminder, title);
console.log(this.set_name, this.reminders)
};
ReminderSet.prototype.list = function() {
console.log(this.reminders);
};
var Reminder = function(description,set_title) {
this.description = description;
this.set_title = set_title;
//Describes the reminder
};
var work = new ReminderSet("work")
.add(new Reminder("Get to work in time", "work related"));
您的add()
方法采用两个参数:
ReminderSet.prototype.add = function(reminder, title) { /*...*/ }
但您只传递了一个(即提醒
对象):
这会导致第二个参数未定义。嗯,您的add方法会推送提醒和标题,但您的代码使用新的提醒对象调用它,而没有标题;)
var work = new ReminderSet("work")
.add(new Reminder("Get to work in time", "work related"));