可以用到项目的优化网站加载速度方案

module.exports = function(env) {
    return {
        context: config.context,
        entry: config.src,
        output: {
            path: path.join(config.jsDest, project),
            filename: '[name].js',
            chunkFilename: '[name].[chunkhash:8].js',
            publicPath: '/assets/' + project + '/'
        },
        devtool: "eval",
        watch: false,
        profile: true,
        cache: true,
        module: {
            loaders: getLoaders(env)
        },
        resolve: {
            alias: getAlias(env)
        },
        plugins: getPlugins(env)
    };
}

JS压缩：使用webpack的UglifyJsPlugin插件，同时做一些代码检测。
new webpack.optimize.UglifyJsPlugin({
    mangle: {
        except: ['$super', '$', 'exports', 'require']
    }
})

var postcss = [
    cssnano({
        autoprefixer: false,
        reduceIdents: false,
        zindex: false,
        discardUnused: false,
        mergeIdents: false
    }),
    autoprefixer({
        browers: ['last 2 versions', 'ie >= 9', '> 5% in CN']
    }),
    will_change,
    color_rgba_fallback,
    opacity,
    pseudoelements,
    sorting
];

// 构建视图文件-build版本
gulp.task('build:views', ['clean:views'], function() {
    return streamqueue({ objectMode: true },
            gulp.src(config.commonSrc, { base: 'src' }),
            gulp.src(config.layoutsSrc, { base: 'src' }),
            gulp.src(config.pagesSrc, { base: 'src/pages' }),
            gulp.src(config.componentsSrc, { base: 'src' })
        )
        .pipe(plumber(handleErrors))
        .pipe(logger({ showChange: true }))
        .pipe(preprocess({ context: { PROJECT: project } }))
        .pipe(gulpif(function(file) {
            if (file.path.indexOf('.html') != -1) {
                return true;
            } else {
                return false;
            }
        }, htmlmin({
            removeComments: true,
            collapseWhitespace: true,
            minifyJS: true,
            minifyCSS: true,
            ignoreCustomFragments: [/<%[\s\S]*?%>/, 
                                    /<\?[\s\S]*?\?>/, 
                                    /<meta[\s\S]*?name="viewport"[\s\S]*?>/]
        })))
        .pipe(gulp.dest(config.dest));
});

// 检测浏览器是否支持webp
// 之所以没写成回调，是因为即使isSupportWebp=false也无大碍，但却可以让代码更容易维护
(function() {
    function webpTest(src, name) {
        var img = new Image(),
            isSupport = false,
            className, cls;
        img.onload = function() {
            isSupport = !!(img.height > 0 && img.width > 0);
            cls = isSupport ? (' ' + name) : (' no-' + name);
            className = document.querySelector('html').className
            className += cls;
            document.querySelector('html').className = className.trim();
        };
        img.onerror = function() {
            cls = (' no-' + name);
            className = document.querySelector('html').className
            className += cls;
            document.querySelector('html').className = className.trim();
        };
        img.src = src;
    }
    var webpSrc = 'data:image/webp;base64,UklGRiQAAABXRUJQVlA4IBgAAAAwAQCdASoB\
                AAEAAwA0JaQAA3AA/vuUAAA=',
        webpanimationSrc = 'data:image/webp;base64,UklGRlIAAABXRUJQVlA4WAoAAAA\
                            SAAAAAAAAAAAAQU5JTQYAAAD/////AABBTk1GJgAAAAAAAAAAAA\
                            AAAAAAAGQAAABWUDhMDQAAAC8AAAAQBxAREYiI/gcA';
    webpTest(webpSrc, 'webp');
    webpTest(webpanimationSrc, 'webpanimation');
})();

// 获取webp格式的src
function _getWebpSrc(src) {
    var dpr = Math.round(window.devicePixelRatio || 1),
        ratio = [1, 1, 1.5, 2, 2, 2],
        elHtml = document.querySelector('html'),
        isSupportWebp = (/(^|\s)webp(\s|$)/i).test(elHtml.className),
        isSupportWebpAnimation = (/(^|\s)webpanimation(\s|$)/i).test(elHtml.className),
        deviceWidth = elHtml.clientWidth,
        isQiniuSrc = /img\.qdaily\.com\//.test(src),
        format = _getFormat(src),
        isGifWebp, isNotGifWebp, regDetailImg;
    if (!src || !isQiniuSrc || !format || format == 'webp') {
        return src;
    }
    isNotGifWebp = (format != 'gif' && isSupportWebp);
    isGifWebp = (format == 'gif' && isSupportWebpAnimation);
    // 根据屏幕分辨率计算大小
    src = src.replace(/\/(thumbnail|crop)\/.*?(\d+)x(\d+)[^\/]*\//ig, function(match, p0, p1, p2) {
        if(dpr > 1){
            p1 = Math.round(p1 * ratio[dpr]);
            p2 = Math.round(p2 * ratio[dpr]);
            match = match.replace(/\d+x\d+/, p1 + 'x' + p2)
        }
        return match;
    });
    if(isNotGifWebp || isGifWebp) {
       // 替换webp格式，首页/列表页
        src = src.replace(/\/format\/([^\/]*)/ig, function(match, p1) {
            return '/format/webp';
        });
    }
}