let json = { "0": "jspang", "1": "技术胖", "2": "大胖逼逼叨", length: 3, }; let arr1 = Array.from(json); console.log(arr1); let arr2 = Array.of(3, 4, 5, 6); console.log(arr2); let arr3 = [1, 2, 3, 4, 5, 6, 7, 8, 9]; console.log( arr3.find(function (value, index, arr) { return value > 5; }) );