この本を読んだ一部のまとめ http://www.amazon.co.jp/dp/4873113911

1. JavaScript Good Parts

2. •
•
•
•

3. •
function hoge () {
}
•
var hoge = function () {
};

4. •
hoge(); // ‘hello’
function hoge () {
return ‘hello’;
}
•
hoge(); // TypeError: undefined is not a function
var hoge = function () {
return ‘hello’;
};

5. •
jQuery.get(‘api.php’, function(data) {
alert(data);
});
•
(function() {
// some code
})();

6. • JavaScript
var f = function () {
var hoge = ‘moge’;
alert(hoge); // ‘moge’
};
alert(hoge); // undefined

7. •
var hoge = ‘moge’;
var f = function () {
alert(hoge); // ‘moge’
};

8. •
<script>
var hoge = ‘moge’;
alert(window.hoge); // ‘moge’
</script>

9. •
<script>
(function () {
var hoge = ‘moge’;
alert(hoge); // ‘moge’;
})();
alert(window.hoge); // undefined
</script>

10. var Bird = function (name) {
this.name = name;
};
Bird.prototype = {
nakigoe: ‘piyopiyo’,
say: function () {
return this.name + ‘: ‘ + this.nakigoe;
}
};

11. new
var tori = new Bird(“tori”);
tori.say(); // “tori: piyopiyo”

12. • tori nakigoe name
bird.nakigoe = ‘pugyaaa’;
bird.name = ‘hoge’;
bird.say() // ‘hoge: pugyaaa’;
• new
var tori = Bird('hoge'); // this window
window.name; // “hoge”

13. var bird = function (name) {
var pub = {},
nakigoe = ‘piyopiyo’;
pub.say = function () {
return name + ‘: ‘ + nakigoe;
};
return pub;
};

14. var tori = bird(‘tori’);
tori.say(); // ‘tori: piyopiyo’;
tori.name // undefined
tori.nakigoe // undefined

15. var suzume = function (name) {
var pub = bird(name),
nakigoe = ‘chun chun’;
pub.chun = function () {
return name + ‘: ‘ + nakigoe;
};
return pub;
};

16. var tarou = suzume(‘tarou’);
tarou.say(); // ‘tarou: piyopiyo’;
tarou.chun(); // ‘tarou: chun chun’;