js simple gist

gistfile1.js

/**
 * @Author: George_Chen
 * @Description: get the union of two array
 *
 * @param {Array} arr1, an basic array including some elements
 * @param {Array} arr2, an basic array including some elements
 */
function __getArrayUnion(arr1, arr2) {
    var union = {};
    var len = (arr1.length > arr2.length) ? arr1.length : arr2.length

    for (var i = 0; i < len; ++i) {
        if (!!arr1[i]) {
            union[arr1[i]] = true;
        }
        if (!!arr2[i]) {
            union[arr2[i]] = true;
        }
    }
    return Object.keys(union);
}