@beisen/ethos/lib/lookup-v2/contains.js

beisencloud pc react components

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = contains;
/*
* @Author: zhongjiahao
* @Date:   2016-11-01 18:35:52
* @Last Modified by:   zhongjiahao
* @Last Modified time: 2016-11-01 18:36:20
*/

// 判断n 元素是否是 root中的子元素
function contains(root, n) {
  var node = n;
  while (node) {
    if (node === root) {
      return true;
    }
    node = node.parentNode;
  }

  return false;
}
module.exports = exports['default'];