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`展开运算符和Array.from()都可以将类数组转换成数组,也可以用for遍历` Array.isArray =Array.isArray||function (arg) { return Object.prototype.toString.call(arg) === '[object Array]'; }; Array.isArray(arr)
Array.isArray()
xxx instanceof Array
Array.from(arguments)
Array.prototype.slice.call(arguments)
Array.prototype.concat.apply([], arguments)
[...arguments]
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The text was updated successfully, but these errors were encountered: