1 concat()
Connecting two or more arrays, and returns the result
The method returns a new array after execution, has no effect on the original array
Parameter can have multiple more that can be filled from time to fill all
2 every
Detecting whether each element in the array complex condition
Return value : If the array has a non-compliance return false all in compliance return true
Parameters two parameters first parameter is a callback function (a function parameter)
3 filter
The detection elements in the array, return the new array element composed of qualified
Return value : returns a new array
Parameters The first parameter is the callback
4 find()
Each element in the array are called once, returns the first matching element
The return value returned is the first matching element
The first parameter is a callback has to return the second parameter substitution callback of this directed
5 findindex
Each element in the array once, returns the index of the first matching array element usage and find () as
6 forEach()
Each element of the array call, and elements are passed to the callback with the for loop as
Is a process of elements, no return value
Return value no return value is always undefined
The first parameter is the callback
The second parameter is used to replace the callback of this directed
7 map()
Returns a new array, the array elements are new callback return value after execution
Return value : returns a new array
The first parameter is the callback callback must return a value
The second parameter is used to replace the callback of this
8 includes()
Analyzing an array contains a specified value have returns true not return false
Return value boolean
Parameter value specified
9 indexof()
Search for a location in the array element with its index is returned, there is no return -1
Return Value digital index and -1
Parameter value specified
10 join()
All elements of the array will be converted into a string of heavy
Return value returns a new string
Parameters specified delimiters do not write default is a comma
11 push()
To add a new element of the array of items at the end modify the original array
Return value array new length
Parameters element
12 pop()
Delete the last element in the array of the original array to be changed
The return value returned is to remove that element
Parameters no parameters
13 reduce()
Current element operation callback function, a return value can not be separated before the element. The second is generally performed from the beginning of the return value
Parameters The first parameter is a callback function must return a value or is undefined
14 reverse () inverted array
Reverse the order of the array
The return value is an array of the reversed, changed the original array
Parameters no parameters
15 unshift()
Add one or more elements to the beginning of an array
The return value of new added length of the array upon return
Parameters element to add
16 shift()
Remove the first item in the array
Return value returns that element is deleted
Parameters no parameters
17 slice()
Taken from the original array and return part of the element
The return value of a new array of new elements to the array configuration taken
Parameters start position and end position ( does not include the last element ) before and after the opening and closing
18 some()
Are there qualified to retrieve the array elements, as long as there is compliance with a return to true , does not meet the full return false return value is boolean
Parameter is a callback function callback function must return a value
19 sort()
Elements of the array to be sorted by 0-9-az the order
Return Value new array arrangement after
Parameters callback
20 splice()
An item specified start deleting from an array of elements or add new elements will change the original array
The return value is an array If you delete the element returns a new array of elements that make up this writing deleted
If you do not delete returns an empty array
The first argument must fill the starting position
The second parameter to delete the number of elements can be 0 indicates no deletion does not delete the fill behind all
The third category parameters from third parameter to start new elements are added back
21 tostring()
Array into a string and returns the string
Return value string after conversion
Parameters no parameters