Commit 952d271

author

munnasorder

committed

map function add

1 parent a145b27 commit 952d271Copy full SHA for 952d271

File tree

+25

-0

lines changed

+25

-0

lines changed

Lines changed: 25 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,25 @@`
	`1`	`+const myArray = [1,2,3,4,5,6,7,8,9];`
	`2`	`+`
	`3`	`+// map example 1`
	`4`	`+Array.prototype.myMap = function(cb) {`
	`5`	`+ let result = [];`
	`6`	`+ for (let i = 0, length = this.length; i < length; i++) {`
	`7`	`+ result.push(cb(this[i], i, this));`
	`8`	`+ };`
	`9`	`+ return result;`
	`10`	`+}`
	`11`	`+`
	`12`	`+// myArray.myMap((doc, i, arr) => console.log(doc));`
	`13`	`+// output 1 2 3 4 5 6 7 8 9`
	`14`	`+`
	`15`	`+`
	`16`	`+// map example 2`
	`17`	`+function myOwnMap(arr, cb) {`
	`18`	`+ let result = [];`
	`19`	`+ for (let i = 0, length = arr.length; i < length; i++) {`
	`20`	`+ result.push(cb(arr[i], i, arr));`
	`21`	`+ };`
	`22`	`+ return result;`
	`23`	`+}`
	`24`	`+// myOwnMap(myArray, (doc, i, arr) => console.log(doc));`
	`25`	`+// output 1 2 3 4 5 6 7 8 9`

Comments

(0)