c# - 在像 C# 这样的 JavaScript 中创建事件

Question

我主要使用 C# 编写代码。但是，我正在使用一些 JavaScript。我已经在 J​​avaScript 中定义了一个类，如下所示:

function Item(id, name) {
    this.ID = id;
    this.Name = name;

    // define event submitCompleted
    this.submit = function() {
      // When the submission is completed, fire "submitCompleted" event.
    };
}

我的挑战是，我不知道如何在 JavaScript 中创建和触发自定义事件。如果这是 C#，我会执行以下操作:

public class Item
{
  public string ID { get; set; }
  public string Name { get; set; }

  public Item(string id, string name)
  {
    this.ID = id;
    this.Name = name;
  }

  public event EventHandler SubmitCompleted;
  public void Submit() 
  {
    // Submission logic
    SubmitCompleted(this, EventArgs.Empty);
  }
}

我如何在 JavaScript 中做同样的事情？谢谢!

Answer 1

function Item(id, name, submitCompleted) {
    this.ID = id;
    this.Name = name;
    this.submitCompleted = submitCompleted;

    // define event submitCompleted
    this.submit = function() {
        // When the submission is completed, fire "submitCompleted" event.
        // we are passing 2 arguments to the callback: id and name
        submitCompleted(id, name);
    };
}

var item = new Item(1, 'some name', function(id, name) {
    alert('id = ' + id + ', name = ' + name);
});
item.submit();