1、every

let arr = [0, 1, 2, 3, 4, 5];

let result = arr.every((item, index) => {

　　return item >= 0

})

结果: result = true

let result = arr.every((item, index) => {

　　return item > 0

})
结果: result = false

2、some

let arr = [0, 1, 2, 3, 4, 5];

let result = arr.some((item, index) => {

　　return item >= 5

})

结果: result = true

let arr = [0, 1, 2, 3, 4, 5];

let result = arr.some((item, index) => {

　　return item > 5

})

结果: result = false