ut2/es/orderBy.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

import identity from './identity.js';
import createIteratee from './internals/createIteratee.js';
import { compareMultiple } from './internals/compare.js';
import isArray from './isArray.js';
import forEach from './forEach.js';
import { nativeUndefined } from './internals/native.js';

var orderBy = function (collection, iteratees, orders) {
    var result = [];
    iteratees = (isArray(iteratees) ? iteratees : iteratees !== nativeUndefined ? [iteratees] : [identity]);
    orders = (isArray(orders) ? orders : orders !== nativeUndefined ? [orders] : []);
    var index = -1;
    forEach(collection, function (item, key, arr) {
        var criteria = iteratees.map(function (iteratee) { return createIteratee(iteratee)(item, key, arr); });
        result.push({
            criteria: criteria,
            index: ++index,
            value: item
        });
    });
    return result.sort(function (a, b) { return compareMultiple(a, b, orders); }).map(function (item) { return item.value; });
};

export { orderBy as default };