javaScript复制粘贴

1.clipboard.js 实现了纯 JavaScript （无 Flash）的浏览器内容复制到系统剪贴板的功能。可以在浏览器和 Node 环境中使用。支持 Chrome 42+、Firefox 41+、IE 9+、Opera 29+

cdn：<script src="https://cdn.bootcss.com/clipboard.js/1.6.1/clipboard.min.js"></script>

用法：

<script src="clipboard.min.js"></script>
 <textarea id="bar" cols="" rows="" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false">脚本之家是国内专业的网站建设资源、脚本编程学习类网站，提供asp、php、asp.net、javascript、jquery、vbscript、dos批处理、网页制作、网络编程、网站建设等编程资料。</textarea>

<!-- Trigger -->
<button class="btn" data-clipboard-action="copy" data-clipboard-target="#bar">
  Cut to clipboard
</button>
<script>
var clipboard = new Clipboard('.btn');
clipboard.on('success', function(e) {
  console.info('Action:', e.action);
  console.info('Text:', e.text);
  console.info('Trigger:', e.trigger);
alert("复制成功");
  e.clearSelection();
});

clipboard.on('error', function(e) {
  console.error('Action:', e.action);
  console.error('Trigger:', e.trigger);
});
</script>

2.react-copy-to-clipboard

安装：npm install --save react-copy-to-clipboard

用法：

import React from 'react';
import CopyToClipboard from 'react-copy-to-clipboard';

const App = React.createClass({
  getInitialState() {
    return {value: '', copied: false};
  },

  render() {
    return (
      <div>
        <input value={this.state.value}
          onChange={({target: {value}}) => this.setState({value, copied: false})} />&nbsp;

        <CopyToClipboard text={this.state.value}
          onCopy={() => this.setState({copied: true})}>
          <span>Copy to clipboard with span</span>
        </CopyToClipboard>&nbsp;

        <CopyToClipboard text={this.state.value}
          onCopy={() => this.setState({copied: true})}>
          <button>Copy to clipboard with button</button>
        </CopyToClipboard>&nbsp;

        {this.state.copied ? <span style={{color: 'red'}}>Copied.</span> : null}
      </div>
    );
  }
});

React.render(<App />, document.body);