复制文本

clipboard.js

export default (function clipboard(document) {
  let textArea;

  // 创建文本元素
  function createTextArea(text) {
    textArea = document.createElement('textArea');
    textArea.setAttribute('readonly', true);
    textArea.value = text;
    document.body.appendChild(textArea);
    textArea.select(); 
  }

  function copyToClipboard() {
    return new Promise((resolve, reject) => {
      // document.execCommand('selectAll')解决ios下select选取不到文本的问题
      if (document.execCommand('selectAll') && document.execCommand('Copy')) {
        window.getSelection().removeAllRanges();
        resolve();  
      } else {
        reject();
      }
      document.body.removeChild(textArea);
    });
  }

  function copy(text) {
    createTextArea(text);
    return copyToClipboard();
  }

  return copy;
}(document));