vue-复制剪贴板

一、 下载安装Vue 3 Composition API的工具库

npm i @vueuse/core

 二、引入

import { useClipboard } from '@vueuse/core';

三、自定义hook组件

import { useClipboard } from '@vueuse/core';

const { copy, isSupported } = useClipboard();

export function useClipboards() {
  const copyFn = isSupported ? copy : execCopyCommand;
  return {
    copyFn,
  };
}
//  如果不支持系统复制
export function execCopyCommand(text: string) {
  try {
    const textArea = document.createElement('textarea');
    textArea.value = text;
    // 使text area不在viewport，同时设置不可见
    textArea.style.position = 'absolute';
    textArea.style.left = '-100px';
    textArea.style.top = '-100px';
    document.body.appendChild(textArea);
    textArea.focus();
    textArea.select();
    return new Promise(() => {
      // 执行复制命令并移除文本框
      document.execCommand('copy');
      textArea.remove();
    });
  } catch (e) {
    console.error('Failed to copy-e:', e);
  }
}

四、 页面中引用并实现复制

**引入hooks方法

import { useClipboards } from '@/hooks/useClipboards';
const { copyFn } = useClipboards();

**事件定义 

<div style="margin-top: 20px" @dblclick="handleClick">
        <codemirror
          ref="codemirorRef"
          @ready="handleReady"
        />
      </div>

  **双击事件

const codemirorRef = ref();

const handleReady = (payload: { view: EditorView; state: EditorState; container: HTMLDivElement }) => {
  codemirorRef.value = payload.view;
};

const handleClick = () => {
    copyFn(codemirorRef.value.modelValue);
    mes.success('已全部复制到剪切板');
};