require('uikit/css/uikit.gradient.css');
require('uikit/css/components/placeholder.gradient.css');
require('uikit/css/components/form-file.gradient.css');
require('uikit/css/components/progress.gradient.css');

var $ = require('jquery');
var UIkit = require('uikit/js/uikit.js'); // 把uikit引用进来 浏览器就会提示脚本有错。
require('uikit/js/components/upload.js'); // 还要我该怎么使用uikit的upload组件？

把uikit引用进来 浏览器就会提示脚本有错。
可以uikit 是支持AMD规范的呀，
http://getuikit.com/docs/documentation_javascript.html#amd-support

应该和配置没关系吧？我的 webpack.config.js 是这样：

 

 var path = require("path");
var webpack = require('webpack');
var CommonsChunkPlugin = require("webpack/lib/optimize/CommonsChunkPlugin");

module.exports = {
    entry: {
        zyfaq: "./app/zyfaq/zyfaq.js"
    },
    output: {
        path: __dirname + '/public/js',
        filename: "[name].min.js"
    },
    module: {
        loaders: [
            { test: /\.css$/, loader: "style!css" },
            { test: /\.less$/, loader: "style!css!less" },
            { test: /\.(woff|ttf|eot|woff2)$/, loader: "file"}
        ]
    },
    resolve: {
        root: [path.join(__dirname, "bower_components")]
    },
    plugins: [
//        new webpack.optimize.UglifyJsPlugin(),
        new webpack.ResolverPlugin(
            new webpack.ResolverPlugin.DirectoryDescriptionFilePlugin("bower.json", ["main"])
        ),
        new CommonsChunkPlugin("common.min.js")
    ]
};