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vue_js_composition_api
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Hirofumi Horiuchi
May 25, 2020
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vue_js_composition_api
Hirofumi Horiuchi
May 25, 2020
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Transcript
Vue.js の新機能 Composition APIを 使ってみた Tried using Composition API which
is a new feature of Vue.js
Hello! I am Hirofumi Horiuchi. Corp: Job: IoT Engineer Hobby:
Camp, Watting Football @h_reader 2
“ Vue.js 3.x は現在 Beta版が リリースされています。 Vue.js 3.x is currently
in beta release.
“ Vue.js 3.x の Composition API を使ってみました I tried using
the Composition API of Vue.js 3.x
“ Composition API を利用すると VueComponent内のscriptの 書き方が変わります How to write script
in Vue Component changes when using Composition API.
“ 現在の書き方とComposition APIを 使った書き方で カウンターアプリを作ってみました I tried to make a
counter application with the current writing style and the writing style using Composition API.
7 カウンターアプリUI Counter app UI count up ボタン -> カウントを1上げる
count up button -> Add 1 to the count Count -> 現在のカウント Count -> Current count. Double -> カウントの2倍 Count -> Double the count.
現在の書き方 Current writing style
Composition APIの書き方 How to write with Composition API
“ なんだか面倒だな。。。 It's troublesome...
“ そんなふうに考えていた時期が 俺にもありました There was also a time when I
was thinking that way.
“ Composition APIおじさんは こう言っています。 He says:
“ Composition APIを使うと Component間のロジックを抽出して 簡単に再利用できるよ! The Composition APIs make it
more straightforward to extract and reuse logic between components.
“ 先ほどのロジックを 抽出してみましょう。 Let's extract the logic.
ロジックを抽出して別ファイルへ Extract logic to another file use_increment.js
ロジックを抽出して別ファイルへ Extract logic to another file component
“ なるほど!これはいいかも I got it! This might be good.
“ Vuexを使う場合はどうなるんだろう? What if I use Vuex?
Vuex を使う Use Vuex store
Vuex を使う Use Vuex component
Vuex を使うロジックを抽出 Extract the logic that uses Vuex use_increment_store.js
Vuex を使うロジックを抽出 Extract the logic that uses Vuex component
まとめ Summary Composition API は 機能ごとにComponentのロジックを分 割するためのAPI Composition API is
an API for dividing the component logic by function. 今まで複数のComponentで書いていた同じロジックをDRYに 書けそう I wrote the same logic to multiple components, but I can write to DRY. VSCode is the amazing editor.
おまけ extra 24
“ Composition API の公式に載っていた とても良かったコード Very good code on the
official Composition API site.
None
27 Thanks! Any questions? You can find me at ▪
@h_reader