JavaScript Shu array elements reversed

 

Method 1: reverse method

There ArR 1 = [ 'a', 'b', 'c', 'd', 'e' ]
console.log('source arr1 =', arr1)
arr1.reverse()
console.log('target arr1 =', arr1)

 

 

Mode 2: switching element position

was arr = [1, 2, 3, 4, 5, 6 ]
console.log('source arr =', arr)
for (var i = 0; i < arr.length / 2; i++) {
    var temp = arr[i]
    arr[i] = arr[arr.length - 1 - i]
    arr[arr.length - 1 - i] = temp
}
console.log('target arr =', arr)

 

 

 

reference:

https://github.com/wangjianuo/blog/issues/1