はてなブックマーク

DOMとは DOMとは、マークアップ言語(html, xml)を、プログラミング言語によって、操作することでWebページの見た目を変化させることができる仕組み。 仮想DOMとは 先ほどのDOMツリーを内容の更新時に全て読み込むのではなく、はじめに全て読み込んだ後は更新した差分のみを仮想のDOMツリーに追加する。 そうすることで、よりリアクティブにwebページに反映することができる。 Vue.jsとは 一方向での、JavaScriptオブジェクト(データ)とDOM要素のやりとりではなく、双方向にすることでよりリアルタイムでスピーディにデータのやり取りを実現できる、JavaScriptのライブラリ。 双方向でのデータのやり取りをするための仲立ちをするのが、Vueインスタンス(ビューモデル)。 Vue.jsのライフサイクル Vue.jsの機能を反映させるためには、Vueインスタンスが生成された後

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app_front | npm ERR! code ENOENT app_front | npm ERR! syscall open app_front | npm ERR! path /app/package.json app_front | npm ERR! errno -2 app_front | npm ERR! enoent ENOENT: no such file or directory, open '/app/package.json' app_front | npm ERR! enoent This is related to npm not being able to find a file. app_front | npm ERR! enoent app_front | app_front | npm ERR! A complete log of this run c

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