数组的flat方法
Array.prototype.MyFlat = function () {
let arr = this
while (arr.some(item => Array.isArray(item))) {
arr = [].concat(...arr)
}
return arr
}
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数组的flat方法Array.prototype.MyFlat = function () {
let arr = this
while (arr.some(item => Array.isArray(item))) {
arr = [].concat(...arr)
}
return arr
}