Function trimNode

01.GettingStarted/js/vue.js:1398–1408

* Trim possible empty head/tail text and comment * nodes inside a parent. * * @param {Node} node

(node)

   */

  function trimNode(node) {
    var child;
    /* eslint-disable no-sequences */
    while ((child = node.firstChild, isTrimmable(child))) {
      node.removeChild(child);
    }
    while ((child = node.lastChild, isTrimmable(child))) {
      node.removeChild(child);
    }
    /* eslint-enable no-sequences */
  }

  function isTrimmable(node) {
    return node && (node.nodeType === 3 && !node.data.trim() || node.nodeType === 8);