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14 lines
362 B
14 lines
362 B
// js 中的 typeof
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// console.log(typeof 'hello TS')
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// TS 中的 typeof
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let p = { x: 1, y: 2 }
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// function formatPoint(point: {x: number; y: number }) {}
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// 使用 typeof，拿到对象 p 中的类型，实现简化书写的目的
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function formatPoint(point: typeof p ) {}
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formatPoint({ x: 1, y: 100 })
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// 查看 p对象中属性 x
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let num: typeof p.x
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