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21 lines
414 B
21 lines
414 B
// 交叉类型：功能类似 extends，用于组合多个类型为一个类型（常用于对象类型）
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interface Person {
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name: string
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say(): number
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}
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interface Contact {
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phone: string
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}
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// PersonDetail 同时具有 Person 和 Contact 的属性和方法
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type PersonDetail = Person & Contact
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let obj: PersonDetail = {
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name: 'jack',
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phone: '123456',
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say() {
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return 1
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}
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}
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