📌  相关文章
📜  system collections generic list1(system object to list) - Javascript(1)

📅  最后修改于: 2023-12-03 15:35:13.785000             🧑  作者: Mango

System Collections Generic List1 (System Object to List) - JavaScript

In JavaScript, it is often useful to store a collection of objects in a list. One way to do this is by using the System.Collections.Generic.List1 class, which allows you to store a list of objects of a specific type.

Creating a List Object

To create a new list object, you can use the new keyword followed by the name of the class and the type of object you want to store. For example:

let myList = new System.Collections.Generic.List1(System.Object);

This creates a new list object called myList that can store objects of any type.

Adding Objects to the List

To add an object to the list, you can use the Add method. For example:

let myString = "Hello, world!";
let myNumber = 123;
let myObject = {name: "John"};

myList.Add(myString);
myList.Add(myNumber);
myList.Add(myObject);

This adds three objects to the list: a string, a number, and an object.

Retrieving Objects from the List

To retrieve an object from the list, you can use the Item property and specify the index of the object you want to retrieve. For example:

let mySecondObject = myList.Item(2);

This retrieves the third object in the list and stores it in the mySecondObject variable.

Removing Objects from the List

To remove an object from the list, you can use the Remove method and specify the object you want to remove. For example:

myList.Remove(myObject);

This removes the myObject object from the list.

Conclusion

Using the System.Collections.Generic.List1 class in JavaScript can be a powerful way to store and manipulate collections of objects of a specific type. By understanding how to create a list object, add and retrieve objects, and remove objects, you can create more organized and efficient code.