ES6_解构赋值_note
- 解构赋值非常有用
- 例如:
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<script > let [a, b, c] = [12, 5, 6]; </script>
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- json:
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<script> let json = { name: "Strive", age: 18, job: "码农" }; let { name, age, job} = json; console.log(name); </script>
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- json中起别名:
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<script> let json = { name: "Strive", age: 18, job: "码农" } //此处的job:a为起别名 let { name, age, job: a} = json; console.log(name, age, a); </script>
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- 赋予默认值:
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此时输出的是:<script> // 赋予默认值 // 此时输出undefine时为空值,若输出null,并非空值(可能是后台给的默认值为null) let [a, b, c = "暂无数据"] = ['aa', 'bb']; console.log(a, b, c); </script>
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- 例如:
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