Javascript - 如何在 Vue.js 中使用多个复选框进行过滤?
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【中文标题】Javascript - 如何在 Vue.js 中使用多个复选框进行过滤?【英文标题】:Javascript - How to filter with multiple checkboxes in Vue.js? 【发布时间】:2021-07-08 20:25:52 【问题描述】:这是我的过滤、排序和搜索代码,一切正常
<template>
<h5>List of Products</h5>
<h3>Filter</h3>
<button v-on:click="resetOptions">Reset</button>
<button v-on:click="sorting">Sorting</button>
<button v-on:click="sorting2">Sorting2</button>
<select v-model="category">
<option value="Accessories">Accessories</option>
<option value="Laptop">Laptop</option>
<option value="Stationary">Stationary</option>
</select>
<div>
<input type="checkbox" name="test" id="test" v-model="city" value='Roma' @change="uniqueCheck">
<label for="test"> Roma</label>
<input type="checkbox" name="test2" id="test2" v-model.trim="city" value='Barselona' @change="uniqueCheck">
<label for="test2"> Barselona</label>
<input type="checkbox" name="test3" id="test3" v-model.trim="city" value='Milano' @change="uniqueCheck">
<label for="test3"> Milano</label>
</div>
<!-- <select v-model="city">
<option value="Barselona">Barselona</option>
<option value="Roma"> Roma </option>
<option value="Milano">Milano</option>
</select> -->
<input type="text" v-model="name" placeholder="Filter By Name"/>
<label for="vol">Price (between 0 and 1000):</label>
<input type="range" v-model.trim="range" min="0" max="1000" step="10"/>
<ul>
<li v-for="product in filterProducts" :key="product.name"> Product Name : product.name - Price : product.price (product.category)
product.city
</li>
</ul>
</template>
<script>
export default
data: ()=> (
city:[ ],
category: '',
name: '',
range: '10000',
products: [
name: "Keyboard", price: 44, category: 'Accessories', city:'Roma',
name: "Mouse", price: 20, category: 'Accessories', city:'Barselona',
name: "Monitor", price: 399, category: 'Accessories', city:'Roma',
name: "Dell XPS", price: 599, category: 'Laptop', city:'Roma',
name: "MacBook Pro", price: 899, category: 'Laptop', city:'Roma',
name: "Pencil Box", price: 6, category: 'Stationary', city:'Barselona',
name: "Pen", price: 2, category: 'Stationary', city:'Milano',
name: "USB Cable", price: 7, category: 'Accessories', city:'Milano',
name: "Eraser", price: 2, category: 'Stationary', city:'Roma',
name: "Highlighter", price: 5, category: 'Stationary', city:'Roma'
]
),
computed:
filterProducts: function()
return this.filterProductsByName(this.filterProductsByRange(this.filterProductsByCity(this.filterProductsByCategory(this.products))))
,
,
methods:
filterProductsByCategory: function(products)
return products.filter(product => !product.category.indexOf(this.category))
,
filterProductsByName: function(products)
return products.filter(product => !product.name.toLowerCase().indexOf(this.name.toLowerCase()))
,
filterProductsByCity: function(products)
return products.filter(product => !product.city.indexOf(this.city))
,
filterProductsByRange: function(products)
return products.filter(product => (product.price >= 0 && product.price <= this.range) ? product : '')
,
sorting:function()
this.products.sort((a,b)=>(a.price > b.price) ? 1 : -1)
,
sorting2:function()
this.products.sort((a,b)=>(a.price < b.price) ? 1 : -1)
,
uniqueCheck(e)
this.city = [];
if (e.target.checked)
this.city.push(e.target.value);
,
resetOptions:function()
this.category='',
this.city='',
this.name='',
this.range='1000'
,
,
</script>
<style>
</style>
但我还希望有多个复选框过滤器,例如,如果我检查了城市“巴塞罗那”和“罗马”,我想向我展示城市的巴塞罗那和罗马的产品。此代码将不起作用,因为@change 函数,我尝试没有它,但结果是当我单击第二个复选框时我什么也没得到
我怎样才能在这里也有那个过滤器?
【问题讨论】:
【参考方案1】:您的 filterProductsByCity 方法不正确。
它应该检查产品的城市是否列在您的this.city
属性中。
当您选中复选框时,它会将它们的值添加到 city
属性中:
例如:['barcelona', 'montreal']
因此您可以执行以下操作:
filterProductsByCity: function(products)
return products.filter(product => this.city.indexOf(product.city) !== -1)
【讨论】:
这很好用,但这是一个问题,它现在默认显示产品列表,只有在点击时才会显示。我可以使用默认选中的复选框来解决这个问题,但我想默认显示列表,当用户选中复选框时,我希望使用过滤功能更新列表以上是关于Javascript - 如何在 Vue.js 中使用多个复选框进行过滤?的主要内容,如果未能解决你的问题,请参考以下文章