lenye_base/es/compact.js

基础方法

import './get_tag.js';
import isArray from './is_array.js';

/**
 * returns a copy of an array with falsey values removed
 */
function compact(arr) {
  if (!isArray(arr)) {
    throw new Error('expected an array');
  }

  var result = [];
  var len = arr.length;

  for (var i = 0; i < len; i++) {
    var elem = arr[i];

    if (elem) {
      result.push(elem);
    }
  }

  return result;
}

export default compact;