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JS_删除数组里的无效数据 0 undefined ‘‘ null false NaN
2022-07-29 12:27:00 【小歪 | 前端】
const arr = [false, 0, undefined, , '', NaN, 9, true, null, 'test']
const arr1 = arr.filter(Boolean)
console.log(arr1) //[0, 9, 'test']
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