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add some definition statements in the chapter of Arrows #114

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add some definition statements in the chapter of Arrows #114

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74cfaa1
add the definition statement
ramwin Jan 22, 2017
b53dfca
Update README.md
ramwin Jan 23, 2017
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5 changes: 4 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -35,11 +35,14 @@ Arrows are a function shorthand using the `=>` syntax. They are syntactically s

```JavaScript
// Expression bodies
var evens = [2, 4, 6];
var odds = evens.map(v => v + 1);
var nums = evens.map((v, i) => v + i);
var pairs = evens.map(v => ({even: v, odd: v + 1}));

// Statement bodies
var nums = [1, 5, 7, 10];
var fives = []
nums.forEach(v => {
if (v % 5 === 0)
fives.push(v);
Expand All @@ -48,7 +51,7 @@ nums.forEach(v => {
// Lexical this
var bob = {
_name: "Bob",
_friends: [],
_friends: ["Alice", "Jack"],
printFriends() {
this._friends.forEach(f =>
console.log(this._name + " knows " + f));
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