node.js - Node ejs forEach 导致 'Content Security Policy' 错误

Question

我很高兴发布我的第一个 Stack Overflow 查询。 :D

我最近开始了一门 Node.js 类(class)，我只想指出我还没有做任何硬核的事情。

我有一个使用 nodemon 运行的本地 Node 服务器。我开始使用 ejs 并发现 forEach 循环由于某种原因正在融化我的网页。

我尝试进行研究并筛选我的代码，逐个删除问题之前不存在的某些部分，直到问题消失，并发现当我从 ejs 文件中的代码中取出 forEach 循环时，问题就消失了。

//this is my .js file located in my ./routes folder

const express = require('express');
const router = express.Router();
const admin_data = require('./admin');

router.get('/', (req, res, next) => {
    const products = admin_data.products;
    res.render('shop', {
        page_title: 'Shop',
        prods: products
    });
});

//nothing too hectic.

//this is my ejs file located in my ./views folder.

<% if (prods.length > 0) { %>
        <div class="grid">
            <% forEach (var products in prods) { %> //if i remove this and it's closing '}' it works fine.
            <article class="card product-item">
                <header class="card__header">
                    <h1 class="product__title">product</h1>
                </header>
                <div class="card__image">
                    <img src="" alt="A Book">
                </div>
                <div class="card__content">
                    <h2 class="product__price">$19.99</h2>
                    <p class="product__description">A very interesting book about so many even more interesting things!
                    </p>
                </div>
                <div class="card__actions">
                    <button class="btn">Add to Cart</button>
                </div>
            </article>
            <% } %>
        </div>
        <% } %>

我希望代码能够呈现页面，但却收到错误:

"SyntaxError: Unexpected token { in C:\Users\Ruan Buitendag\Documents\NodeJS\Practice Server\views\shop.ejs while compiling ejs" in my vscode terminal and "Content Security Policy: The page’s settings blocked the loading of a resource at inline (“default-src”)" in my browser console.

编辑:PS。我尝试在 Firefox 开发者版、普通 Firefox 和 google chrome 中运行该页面。

Answer 1

我认为问题出在你的循环中。以这种方式使用 forEach:

<% prods.forEach(function(product) { %>
<article class="card product-item">
    <header class="card__header">
       <h1 class="product__title">product</h1>
    </header>
    <div class="card__image">
       <img src="" alt="A Book">
    </div>
    <div class="card__content">
        <h2 class="product__price">$19.99</h2>
        <p class="product__description">A very interesting book about so many even more interesting things!</p>
    </div>
    <div class="card__actions">
        <button class="btn">Add to Cart</button>
    </div>
</article>
<% }) %>

或者，您可以使用 for...of 循环，如下所示:

<% for (var product of prods) { %>
...