Method connectedCallback

test/src/webComponents/StringTest.js:15–19

()

  }

  connectedCallback() {
    const shadow = this.attachShadow({ mode: "open" });
    shadow.appendChild(StringTest.template.content.cloneNode(true));
    this.setString();
  }

  setString() {
    this.shadowRoot.querySelector(".string").innerText = this.string;