How to use js to copy part of the text in the link_javascript skills

The links on the web page generally look like a finger when you put the mouse on them, so you cannot drag the mouse to copy. The following JS allows you to copy. Save this code as a chrome bookmark, which needs to be copied. When you click on this bookmark and then hold down the ctrl key, you can copy the text above the link

The implementation code for copying part of the text in the link is as follows:

javascript: (function() {
  var h, checked = true,
  down = false;
  document.addEventListener('mouseover',
  function(e) {
    var link, c = '',
    target = e.target;
    if (target.nodeName == 'A') {
      if (target.hasChildNodes) {
        for (var i = 0; i < target.childNodes.length; i++) {
          if (target.childNodes[i].nodeName == 'INPUT') return;
        }
      }
      link = target;
    }
    if (target.parentNode.nodeName == 'A' && target.nodeName != 'IMG' && target.nodeName != 'INPUT') {
      link = target.parentNode;
    }
    if (!link) return;
    if (checked) {
      h = link.href;
      if (link.style.cssText) c = link.style.cssText;
    }
    function _click(e) {
      link.removeEventListener(e.type, arguments.callee, false);
      e.preventDefault();
    }
    function _keydown(e) {
      var k = parseInt(e.keyCode);
      if (k < 48 && k != 17) return;
      document.removeEventListener(e.type, arguments.callee, false);
      down = true;
      link.removeAttribute('href');
      link.setAttribute('style', c + 'cursor:text!important;');
      link.addEventListener('click', _click, false);
    }
    document.addEventListener('keydown', _keydown, false);
    link.addEventListener('mouseout',
    function(e) {
      var k = link.compareDocumentPosition(e.relatedTarget);
      if (k == 20 || k == 0) {
        checked = false;
      } else {
        link.removeEventListener(e.type, arguments.callee, false);
        link.removeEventListener('click', _click, false);
        document.removeEventListener('keydown', _keydown, false);
        checked = true;
        if (down) {
          down = false;
          link.setAttribute('href', h);
          if (c == '') {
            link.removeAttribute('style');
          } else {
            link.setAttribute('style', c);
          }
        }
      }
    },
    false);
  },
  false);
})();

The above is the implementation code for copying part of the text in the link. I hope you like it.