typescript 如何使用打字稿将对象推入数组
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How to push an object into an array with typescript
提问by Tri Nguyen
i have an array name dish and have a form. After the form submited, data push to dish. I have tried to use push method to add that into an array, but it's have error. How i can do that with typescript ? Thanks you very much. Class object.
我有一个数组名称盘并有一个表格。表单提交后，数据推送到盘。我尝试使用 push 方法将其添加到数组中，但有错误。我怎么能用打字稿做到这一点？非常感谢你。类对象。
export interface Dish {
id: number;
name: string;
image: string;
category: string;
label: string;
price: string;
featured: boolean;
description: string;
comments: Comment[];
}
I have created an object name commentData from class comment to receive all data from form after submit. I also created an object name dish from class Dish. How to push object commentData to object dish.comments
我从类 comment 创建了一个对象名称 commentData 以在提交后从表单接收所有数据。我还从 Dish 类创建了一个对象名称菜肴。如何将对象commentData推送到对象dish.comments
export interface Comment {
rating: number;
comment: string;
author: string;
date: string;
}
回答by Dr. X
let myArray= [];
let commentData = {} as Dish;
commentData.id = 3;
commnetData.name = 'something';
...
myArray.push(commentData);
It will work...
它会工作...
回答by amal
If you simply need to add the new commentDataafter each form submission (if I understood you correctly), all you need is this every time you want the new comments to be pushed to the existing dish.comments,
如果您只需要commentData在每次提交表单后添加新的（如果我理解正确的话），那么每次您希望将新评论推送到现有评论时，您只需要这样做dish.comments，
this.dish.comments = this.dish.comments.push(this.commentData); // assuming these are class properties, hence the 'this' usage
Does that work for you?
那对你有用吗？
EDIT
编辑
Modify the first line
修改第一行
this.commentData = this.comment.value;
in dismiss()method to this,
在dismiss()这个方法中，
this.commentData.author = this.comment.get('author').value;
this.commentData.rating = this.comment.get('rating').value;
this.commentData.comment = this.comment.get('comment').value;
回答by FiringBlanks
If you need to add multiple objects to an array inside a loop:
如果需要将多个对象添加到循环内的数组中：
let thingsArray = [];
someArray.forEach(doc => {
let thingsObj = {} as Thingy;
thingsObj.weekDue = doc.name;
thingsObj.title = doc.age;
thingsArray.push(thingsObj);
}).then(() => {
console.log(thingsArray);
}
回答by Danushka Amith Weerasingha
let arraylist= [];let obj1 = {} as Class;obj1.id = 1;obj1.name = 'text';let obj2 = {} as Class;obj2.id = 1;obj2.name = 'text';arraylist =[obj1,obj2 ];
let arraylist= [];let obj1 = {} as Class;obj1.id = 1;obj1.name = 'text';let obj2 = {} as Class;obj2.id = 1;obj2.name = 'text';arraylist =[obj1,obj2 ];
This work for me but I tried it with Classes
这对我有用，但我用 Classes 试过了
