Study/WebComponent.html at master · shongs27/Study · GitHub

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<!-- Lit 라이브러리를 쓰면 문법을 간단하게 쓸 수 있다 -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <custom-input name="123"></custom-input>
    <script>
      class meMake extends HTMLElement {
        connectedCallback() {
          this.render();
        }
        render() {
          let 라벨 = document.createElement("label");
          라벨.innerHTML = "이름을 입력하세요";
          this.appendChild(라벨);
          let 인풋 = document.createElement("input");
          this.appendChild(인풋);
        }

        static get observedAttributes() {
          return ["name"]; //[]가 바뀌는지 확인 (react-hook기능)
          //바뀌면 재렌더링
        }

        attributeChangedCallback() {
          this.render();
        }
      }

      customElements.define("custom-input", meMake);
    </script>
  </body>
</html>