javascript - 当我将 jquery 添加到我的网站时，我的 JS 不起作用

Question

我在 Symfony 中用 encore 和 yarn 做一个脚本 JS，当我不使用 jquery 并且从不要求他时，我的 JS 工作正常。但是目前我用 const $ = require('jquery') 添加了 jquery，例如我的脚本不起作用，我没有收到任何错误消息。

我尝试评论 .enableSingleRuntimeChunk()，使用 CDN 添加 jquery，尝试另一个项目。没有任何变化。

//base.html.twig
{% block javascripts %}
            <script src="{{ asset('build/runtime.js') }}"></script>
            <script src="{{ asset('build/app.js') }}" type="text/javascript"></script>
{% endblock %}

// Need jQuery? Install it with "yarn add jquery", then uncomment to require it.
const $ = require('jquery');

console.log('hello');

Encore
    // directory where compiled assets will be stored
    .setOutputPath('public/build/')

    .copyFiles({
        from: './assets/images'
    })


    // public path used by the web server to access the output path
    .setPublicPath('/build')
    // only needed for CDN's or sub-directory deploy
    //.setManifestKeyPrefix('build/')

    /*
     * ENTRY CONFIG
     *
     * Add 1 entry for each "page" of your app
     * (including one that's included on every page - e.g. "app")
     *
     * Each entry will result in one JavaScript file (e.g. app.js)
     * and one CSS file (e.g. app.fontawesome) if your JavaScript imports CSS.
     */
    .addEntry('app', './assets/js/app.js')
    .addEntry('main', './assets/js/main.js')
    //.addEntry('page2', './assets/js/page2.js')

    // When enabled, Webpack "splits" your files into smaller pieces for greater optimization.
    .splitEntryChunks()

    // will require an extra script tag for runtime.js
    // but, you probably want this, unless you're building a single-page app
    .enableSingleRuntimeChunk()

    /*
     * FEATURE CONFIG
     *
     * Enable & configure other features below. For a full
     * list of features, see:
     * https://symfony.com/doc/current/frontend.html#adding-more-features
     */
    .cleanupOutputBeforeBuild()
    .enableBuildNotifications()
    .enableSourceMaps(!Encore.isProduction())
    // enables hashed filenames (e.g. app.abc123.css)
    .enableVersioning(Encore.isProduction())

    // enables @babel/preset-env polyfills
    .configureBabel(() => {}, {
        useBuiltIns: 'usage',
        corejs: 3
    })

    // enables Sass/SCSS support
    .enableSassLoader()

    // uncomment if you use TypeScript
    //.enableTypeScriptLoader()

    // uncomment to get integrity="..." attributes on your script & link tags
    // requires WebpackEncoreBundle 1.4 or higher
    .enableIntegrityHashes(Encore.isProduction())

    // uncomment if you're having problems with a jQuery plugin
    .autoProvidejQuery({
        $: 'jquery',
        jQuery: 'jquery',
        'window.jQuery': 'jquery'
    })

    // uncomment if you use API Platform Admin (composer req api-admin)
    //.enableReactPreset()
    //.addEntry('admin', './assets/js/admin.js')
;

module.exports = Encore.getWebpackConfig();

```


I got nothing.

Answer 1

在 webpack.config.js 中尝试使用:

.autoProvidejQuery()

取消评论(如果你评论过)

.enableSingleRuntimeChunk()

并删除

.autoProvidejQuery({
    $: 'jquery',
    jQuery: 'jquery',
    'window.jQuery': 'jquery'
})

在 app.js 注释 //const $ = require('jquery'); 并使用 jquery

在 base.html.twig 中使用

{% block javascripts %}
       {{ encore_entry_script_tags('app') }}
{% endblock %}

最后运行 yarn encore dev(对于 dev env)或 yarn encore prod(对于 prod env)并重新加载页面