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vue.jsコンポーネント
のススメ
菅原孝則

アソビュー株式会社
菅原孝則
19歳の時からフリーでFlasherを始めてから
かれこれ15年目になります。



今は、アソビュー株式会社という会社で

デザイン・フロントエンド・バックエンドをやってます。
jqueryとか使う従来の開発だと
このコンポーネントの
スタイルどこで書いてるか探
すの面倒くさい問題が勃発!
つか、コンポーネントの修正す
るのにcss,html,jsそれぞれファイ
ル探すのダルイ。
この場合の構造を
図示してみる
(qiitaで以前誰かが書いてました)
cssファイル
スライダーコンポー
ネントのスタイル
カレンダーコンポー
ネントのスタイル
jsファイル
スライダーコンポー
ネントのロジック
カレンダーコンポー
ネントのコンポーネ
ントのロジック
htmlファイル
スライダーコンポー
ネントの構造
カレンダーコンポー
ネントの構造
割と一般的なフロントエンドの水平構造
まぁ、普通に、
css/js/htmlに分けて

作るよね
でもさ、
js/calendar.js
sass/calendar.sass
いろんな.html
探すのダルくね?
そこで、vue.js コン
ポーネントの出番です。
スライダーコンポーネント.vue カレンダーコンポーネント.vue
スタイル スタイル
ロジック ロジック
テンプレート テンプレート
VUEコンポーネントの垂直統合
いまいちピンとこない

大丈夫!
<style scoped>

:scope {

min-height: 80px;

height: 100%;

width: 100%;

display: table;

position: relative;

background-repeat: no-repeat;

background-size : cover;

background-position: center center;

}



……

</style>



<template>

<div class="fit-image" :style="innerStyle">

<div class="content" :class="valign">

<slot></slot>

</div>

</div>

</template>



<script type="text/ecmascript-6" lang="babel">

export default {

props :["src", "valign"],

computed : {

innerStyle : function(){

return {

"background-image" : 'url(' + this.s
}

}

}

}

</script>
これ!
<body>
<fit-image src="画像パス" >caption</fit-image>
</body>
<script src=“vue.min.js”></script>
<script src=“content.js”></script>
したらコレで配置
つまり
クソコードが
1ファイルに!
クソの局所化が
できる!
でもreact,polymerでも
できるんじゃね?
できる!
でもさ

IE9
SEO
は大丈夫?
あんまり大丈夫じゃない
reactでも
サーバーサイドでreactゴニョゴニョするか
HTML-SNAPSHOTとかやれば何とかなりそうに思える。



polymerはそもそもIE9無理
でも、いろいろあって
うちの会社じゃ、

許してくれない!
どうするか
そんな時には、
vue.jsコンポーネント
<body>
<fit-image src="画像パス" >caption</fit-image>
</body>
<script src=“vue.min.js”></script>
<script src=“content.js”></script>
ココに注目
<template>

<div class="fit-image" :style="innerStyle">

<div class="content" :class="valign">

<slot></slot>

</div>

</div>

</template>
ココに差し込まれるのです!
<body>
<div class="fit-image">

<div class="content" >

caption

</div>

</div>
</body>
<script src=“vue.min.js”></script>
<script src=“content.js”></script>
jsでパースされると
こうなる
というわけこんなん
もできる
<body>
<fit-image src="画像パス" >
<h1>見出し</h1>
</fit-image>
</body>
<script src=“vue.min.js”></script>
<script src=“content.js”></script>
これでSEOも、
インタラクションもバッチリ!
おめでとう!
これで君もVUEコン
ポーネント使いだ!
最後に
この手ものは、コン
ポーネントがいっぱ
い出てくるとはやっ
てる感が出くるので
reactじゃなくて、
vue.jsでコンポーネ
ント書いたらシェア
しよう!
THANKS
https://ts020.github.io/vue-loader-example/index.html
サンプルはこちら

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Vue.jsコンポーネントのススメ