search
HomeWeb Front-endFront-end Q&AWhat are the commonly used filters in Vue?

Vue.js是前端开发中备受欢迎的框架,它提供了许多实用的功能,其中过滤器是其重要的特性之一。

过滤器(Filter)是Vue.js提供的一种数据处理工具,可以对模板中的数据进行过滤和格式化输出,以便更为适合页面展示。使用Vue.js的过滤器功能,开发者可以很方便的在模板中使用一些高级的文本转换和格式化功能。下面将会介绍几种常用的Vue.js过滤器。

1. capitalize

将字符串第一个字符转变为大写。

<p>{{ message | capitalize }}</p>
<script>
  Vue.filter('capitalize', function(value) {
    if (!value) return ''
    value = value.toString()
    return value.charAt(0).toUpperCase() + value.slice(1)
  })
  new Vue({
    el: '#app',
    data: {
      message: 'welcome to vue.js'
    }
  })
</script>

2. currency

将数字转换为带有货币符号的格式。

<p>{{ price | currency }}</p>
<script>
  Vue.filter('currency', function (value, currency) {
    var digitsRE = /(d{3})(?=d)/g
    value = parseFloat(value)
    if (!isFinite(value) || (!value && value !== 0)) return ''
    currency = currency != null ? currency : '$'
    var stringified = Math.abs(value).toFixed(2)
    var _int = stringified.slice(0, -3)
    var i = _int.length % 3
    var head = i > 0
      ? (_int.slice(0, i) + (_int.length > 3 ? ',' : ''))
      : ''
    var _float = stringified.slice(-3)
    var sign = value < 0 ? '-' : ''
    return sign + currency + head +
      _int.slice(i).replace(digitsRE, '$1,') +
      _float
  })
  new Vue({
    el: '#app',
    data: {
      price: 12345.6789
    }
  })
</script>

3. filterBy

筛选数组或对象。

<div class="list-item" v-for="(item, index) in list | filterBy search">{{ item.name }}</div>

<input type="text" v-model="search">
<script>
  new Vue({
    el: '#app',
    data: {
      search: '',
      list: [
        { name: 'apple', type: 'fruit'},
        { name: 'banana', type: 'fruit' },
        { name: 'pear', type: 'fruit' },
        { name: 'carrot', type: 'vegetable'}
      ]
    },
  })
</script>

4. orderBy

对数组或对象进行排序。

<table>
  <tr v-for="item in list | orderBy 'score' -1">
    <td>{{ item.name }}</td>
    <td>{{ item.score }}</td>
  </tr>
</table>
<script>
  new Vue({
    el: '#app',
    data: {
      list: [
        { name: 'apple', score: 90},
        { name: 'banana', score: 60 },
        { name: 'pear', score: 80 },
        { name: 'carrot', score: 70}
      ]
    },
  })
</script>

5. date

将日期格式化输出。

<p>{{ date | date('YYYY-MM-DD') }}</p>
<script>
  Vue.filter('date', function (value, format) {
    if (!value) return ''
    format = format || 'YYYY-MM-DD'
    return moment(value).format(format)
  })
  new Vue({
    el: '#app',
    data: {
      date: '2021-08-16'
    },
  })
</script>

以上是常用的几种Vue.js过滤器,通过这些过滤器我们可以很方便的实现文本格式化等高级功能,提高了页面展示的效果和用户体验。

The above is the detailed content of What are the commonly used filters in Vue?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
What is useEffect? How do you use it to perform side effects?What is useEffect? How do you use it to perform side effects?Mar 19, 2025 pm 03:58 PM

The article discusses useEffect in React, a hook for managing side effects like data fetching and DOM manipulation in functional components. It explains usage, common side effects, and cleanup to prevent issues like memory leaks.

Explain the concept of lazy loading.Explain the concept of lazy loading.Mar 13, 2025 pm 07:47 PM

Lazy loading delays loading of content until needed, improving web performance and user experience by reducing initial load times and server load.

What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?Mar 18, 2025 pm 01:44 PM

Higher-order functions in JavaScript enhance code conciseness, reusability, modularity, and performance through abstraction, common patterns, and optimization techniques.

How does currying work in JavaScript, and what are its benefits?How does currying work in JavaScript, and what are its benefits?Mar 18, 2025 pm 01:45 PM

The article discusses currying in JavaScript, a technique transforming multi-argument functions into single-argument function sequences. It explores currying's implementation, benefits like partial application, and practical uses, enhancing code read

How does the React reconciliation algorithm work?How does the React reconciliation algorithm work?Mar 18, 2025 pm 01:58 PM

The article explains React's reconciliation algorithm, which efficiently updates the DOM by comparing Virtual DOM trees. It discusses performance benefits, optimization techniques, and impacts on user experience.Character count: 159

How do you connect React components to the Redux store using connect()?How do you connect React components to the Redux store using connect()?Mar 21, 2025 pm 06:23 PM

Article discusses connecting React components to Redux store using connect(), explaining mapStateToProps, mapDispatchToProps, and performance impacts.

What is useContext? How do you use it to share state between components?What is useContext? How do you use it to share state between components?Mar 19, 2025 pm 03:59 PM

The article explains useContext in React, which simplifies state management by avoiding prop drilling. It discusses benefits like centralized state and performance improvements through reduced re-renders.

How do you prevent default behavior in event handlers?How do you prevent default behavior in event handlers?Mar 19, 2025 pm 04:10 PM

Article discusses preventing default behavior in event handlers using preventDefault() method, its benefits like enhanced user experience, and potential issues like accessibility concerns.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.