-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathes6.js
More file actions
56 lines (42 loc) · 1.38 KB
/
es6.js
File metadata and controls
56 lines (42 loc) · 1.38 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/* eslint-disable */
// Refactor the following code to use the specified ES6 features.
// There are no automated tests.
// To make sure the code still works you can run this file using `node es6.js` from inside `/src`.
//----------------
// const, =>, default parameters, arrow functions default return statements using ()
var food = 'pineapple';
var isMyFavoriteFood = function(food) {
food = food || 'thousand-year-old egg'; //This sets a default value if `food` is falsey
return food === 'thousand-year-old egg';
};
var isThisMyFavorite = isMyFavoriteFood(food);
//----------------
//const, class, template literals, enhanced object literals (foo: foo, -> foo,)
var User = function(options) {
this.username = options.username;
this.password = options.password;
this.sayHi = function() {
return this.username + ' says hello!';
};
}
var username = 'JavaScriptForever';
var password = 'password';
var me = new User({
username: username,
password: password,
});
// ----------------
// let, const, =>, ... (spread operator)
var addArgs = function () {
var sum = 0;
for (var i = 0; i < arguments.length; i++) {
sum += arguments[i];
}
return sum;
};
var argsToCb = function (cb) {
var args = Array.prototype.slice.call(arguments);
return cb.apply(null, args.splice(1));
};
var result = argsToCb(addArgs, 1, 2, 3, 4, 5); //result should be 15
/* eslint-enable */