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TypeScriptで連想配列を定義する

Posted at

TypeScriptで連想配列を書く時に迷ったのでメモ。

デモ


// 連想配列
let list1: { str: string; flag: boolean } = {
    str: 'string',
    flag: true
};

// 配列内連想配列
let list2: { key: string; index: boolean }[] = [
    {
      key: 'string',
      index: true
    },
    {
      key: 'hogehoge',
      index: false
    }
];

// interface
interface list3 {
    id: number,
    season: 'spring' | 'summer' | 'autumn' | 'winter'
}

let obj: list3 = {
    id: 1,
    season: 'spring'
};

上記のコードを下記のサイトにコピペすれば確認できます。
ブラウザ上でTypeScriptを試せるのでオススメです。
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