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[js] 第720天 Array构造函数传入的参数有哪些情况？ #3778

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[js] 第720天 Array构造函数传入的参数有哪些情况？#3778
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@haizhilin2013
haizhilin2013
opened on Apr 4, 2021

第720天 Array构造函数传入的参数有哪些情况？

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alanhe421

alanhe421 commented on Apr 4, 2021

@alanhe421
alanhe421
on Apr 4, 2021

可以是数组项,可以是数组长度，如果是单个数字且范围不在安全范围内，则抛出异常

CafuChino

CafuChino commented on Apr 5, 2021

@CafuChino
CafuChino
on Apr 5, 2021

数组元素项或长度，如果是长度，该数组此时并没有包含任何实际的元素，不能理所当然地认为它包含 arrayLength 个值为 undefined 的元素，非合法值会抛出异常

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          [js] 第720天 Array构造函数传入的参数有哪些情况？ · Issue #3778 · haizlin/fe-interview