在pug和Node.js中创建一个类别和子类别选择菜单,可以通过以下步骤实现:
menu.pug
,并在其中定义一个表单元素用于选择类别和子类别:form
select(id='category', onchange='updateSubcategories()')
option(value='category1') Category 1
option(value='category2') Category 2
option(value='category3') Category 3
select(id='subcategory')
routes.js
,并在其中处理GET请求,渲染上述pug模板文件:const express = require('express');
const router = express.Router();
router.get('/menu', (req, res) => {
res.render('menu');
});
module.exports = router;
app.js
,设置Express应用程序并将上述路由文件引入:const express = require('express');
const app = express();
const routes = require('./routes');
app.set('view engine', 'pug');
app.use(express.static('public'));
app.use('/', routes);
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
script.js
,用于处理类别选择变化时的子类别更新逻辑:function updateSubcategories() {
const category = document.getElementById('category').value;
const subcategorySelect = document.getElementById('subcategory');
// 清空子类别选择菜单
subcategorySelect.innerHTML = '';
// 根据所选类别添加相应的子类别选项
if (category === 'category1') {
addOption(subcategorySelect, 'subcategory1', 'Subcategory 1');
addOption(subcategorySelect, 'subcategory2', 'Subcategory 2');
} else if (category === 'category2') {
addOption(subcategorySelect, 'subcategory3', 'Subcategory 3');
addOption(subcategorySelect, 'subcategory4', 'Subcategory 4');
} else if (category === 'category3') {
addOption(subcategorySelect, 'subcategory5', 'Subcategory 5');
addOption(subcategorySelect, 'subcategory6', 'Subcategory 6');
}
}
function addOption(selectElement, value, text) {
const option = document.createElement('option');
option.value = value;
option.text = text;
selectElement.appendChild(option);
}
script(src='script.js')
这样,当用户在类别选择菜单中选择不同的类别时,子类别选择菜单会根据所选类别进行动态更新。
关于pug和Node.js的更多信息,你可以参考以下链接:
请注意,以上答案仅供参考,具体实现方式可能因个人需求和项目环境而异。
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