Question

我正在尝试为下面的我的类别对象创建一个模型：

 let person = prompt ("Rock, Paper, Scissors");

 // Computer makes a choice
 function computerPlay () {
let compchoice = ['Rock', 'Paper', 'Scissors'];
return compchoice[Math.floor(Math.random() * 
compchoice.length)];
}

//Player vs Computer
function playRound (playerSelection, computerSelection) {
 if (playerSelection === 'Rock' || computerSelection === 
'Scissors') {
return 'You chose ' + playerSelection + ',' + ' You win!';
 } else if (playerSelection === 'Paper' || computerSelection === 
'Rock') 
{
return 'You chose ' + playerSelection + ',' + ' You win!';
 } else if (playerSelection === 'Scissors' || computerSelection === 
'Paper') 
{
return 'You chose ' + playerSelection + ',' + ' You win!';
 } else if (computerSelection === 'Rock' || playerSelection === 
'Scissors') 
{
return 'Computer chose ' + computerSelection + ',' + 'Computer 
wins!';
} else if (computerSelection === 'Paper' || playerSelection === 
'Rock') 
{
return 'Computer chose ' + computerSelection + ',' + 'Computer 
wins!';
} else if (computerSelection === 'Scissors' || playerSelection === 
'Paper') 
{
return 'Computer chose ' + computerSelection + ',' + 'Computer 
wins!';
} else if (computerSelection === playerSelection) {
return 'Its a draw!';
}else {
return 'Please chose Rock, Paper, or Scissors';
}
}

const playerSelection = 'rock';
const computerSelection = computerPlay();
console.log(playRound(playerSelection, computerSelection));

我不确定如何为“类别”创建模型部分，因为数据项可以更改。例如，该API可以返回“汉堡”和“侧面”，而不是“三明治”和“比萨饼”。

这是我所拥有的：

{
    "categories": [
        {
            "sandwiches": [
                {
                    "name": "breadedChickenFlatbread",
                    "description": "A good sandwich",
                    "img": "./sandwich.jpg",
                    "price": "$8.99"
                }
            ]
        },
        {
            "pizzas": [
                {
                    "name": "PizzaPie",
                    "price": "5milliondollars",
                    "img": "",
                    "description": ""
                }
            ]
        }
    ]
}

如何将对象中的类别名称映射到模型？还是应该更改响应对象

Answer 1

因此可以输入以下类别：

interface Category {
  [key:string]: Details[];
}

这是一个索引签名，基本上意味着类型类别具有一定数量的字符串键，这些字符串键将具有Details数组类型值。

您可以使用更严格的文字键入密钥：

type CategoryKey = 'pizzas'|'sandwiches'|'burgers'|'fries';

interface Category {
  [key:CategoryKey]: Details[];
}

现在类别界面只能具有这些特定的键。

具有动态属性的角创建模型

1 个答案: