常用数组API #1

- Array.from(arrayLike[, mapFn[, thisArg]]): newArray
- Array.isArray(any): boolean
- Array.of(element0[, element1[, ...[, elementN]]]): newArray

- arr.pop(): popedElement || undefined
- arr.push(element1[, element2[, ...[, elementN]]]): newLength
- arr.reverse(): newArray
- arr.shift(): deleteElement || undefined
- arr.join([separator]): string
- arr.unshift(element1[, element2[, ...[, elementN]]]): newLength
- arr.concat(value1[, value2[, ...[, valueN]]]): newArray
- arr.entries(): newArray
- arr.every(callback(element[, index[, array]])[, thisArg]): boolean
- arr.fill(value[, start[, end]]): newArray
- arr.filter(callback(element[, index[, array]])[, thisArg]): newArray
- arr.find(callback(element[, index[, array]])[, thisArg]): matchElement || undefined
- arr.findIndex(callback(element[, index[, array]])[, thisArg]): matchIndex || -1
- arr.flat(depth): newArray
- arr.forEach(callback(element[, index[, array]])[, thisArg]): undefined
- arr.includes(searchElement[, fromIndex]): boolean
- arr.indexOf(searchElement[, fromIndex]): boolean
- arr.lastIndexOf(searchElement[, fromIndex]): boolean
- arr.map(callback(element[, index[, array]])[, thisArg]): newArray
- arr.reduce(callback(accumulator, element[, index[, array]])[, initValue]): newArray
- arr.slice([fromIndex[, toIndex]]): newArray
- arr.some(callback(element[, index[, array]])[, thisArg]): newArray
- arr.sort([compareFunction]): newArray
- arr.splice(start[, deleteCount[, element1[, element2[, ...[, elementN]]]]]): deleteArray