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jqueryのgetとかfirstとか

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以下、私的メモ。

<div class="foo">FOO</div>
<div class="foo">FOO</div>
<div class="foo">FOO</div>
var foo = $(".foo");

var html = foo.get(0);
// html.text("BAZ"); こいつは動かない。

var jq_object = $(html);
jq_object.text("BAZ"); // これは動く

var first = foo.first();
first.text("BAZ"); // これも動く

get(0)するときは、返ってくるのはobject?じゃないよということは忘れないこと。

ついでにいうと、firstは
prevObject: b.fn.b.init[3]
とかデータ持っている。

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