JavaScript 实现输入框内容一键复制（附上 Vue 3 实现方式）

<input type="text" ref="inputText" />
<button>一键复制</button>

const copyButton = document.getElementsByTagName("button")[0];
const inputText = document.getElementsByTagName("input")[0];
copyButton.addEventListener("click", () => {
  inputText.select();
  document.execCommand("copy");
});

<input type="text" ref="inputText"/>
<button @mousedown="clickCopy">一键复制</button>

const inputText = ref({} as unknown);
const clickCopy = () => {
  (inputCode.value as HTMLInputElement).select();
  document.execCommand("copy");
};