Examples of how vue+element implements responsiveness

With the rapid development of front-end development technology, more and more developers are beginning to choose to use vue and Element UI to build projects. Vue is a very popular JavaScript framework that provides powerful features such as responsive data binding and single-file components. Element UI is a component library based on Vue.js, which provides numerous UI components and styles, greatly simplifying the front-end development process.

In Vue, responsive data binding is very important. Vue provides functions such as v-model directives and computed attributes, which can easily implement responsive updating and binding of data. When using the Element UI component library, how to make them responsive? Below we will introduce this process in detail with actual code examples.

1. How to use Element UI

Using Element UI in a Vue project is very simple. First, install the Element UI component library in the project:

npm install element-ui -S

Then, introduce Element UI in the project's main.js file:

import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'
Vue.use(ElementUI)```

这样就完成了Element UI库的引入和安装。

二、如何实现响应式

通常情况下，我们在使用Element UI组件库的时候，需要将组件的各种属性和数据进行绑定，才能够真正实现响应式的更新。下面我们以Element UI的Input组件为例，来介绍如何做成响应式。

首先，在Vue组件中，引入Input组件：

<el-input v-model="inputValue"></el-input>

<script><br>import { Input } from 'element-ui '<br>export default {<br> components: {</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">'el-input': Input</pre><div class="contentsignin">Copy after login</div></div> <p>},<br> data () {</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">return {   inputValue: '' }</pre><div class="contentsignin">Copy after login</div></div> <p>}<br>}<br></script>`

In this code, we first introduce the Input component in the Element UI component library. Then, a data named inputValue is defined in the component's data function, which is used to bind the value attribute of the Input component. Finally, in the component's template, we use the v-model directive to bind the inputValue and the value of the Input component together.

However, doing this alone is not enough to achieve truly responsive updates. We also need to combine the computed attribute to complete this process.

  

    <el-input v-model="inputValue"></el-input>
    
{{ computedValue }}
  

<script>
import { Input } from 'element-ui'
export default {
  components: {
    'el-input': Input
  },
  data () {
    return {
      inputValue: '',
      value: '',
      computedValue: ''
    }
  },
  computed: {
    computedValue: {
      get () {
        return 'The input value is: ' + this.value
      },
      set (value) {
        this.value = value
      }
    }
  }
}
</script>```

在这段代码中，我们新增了一个computed属性，名为computedValue。我们在这个computed属性中，定义了一个get方法和一个set方法。在get方法里，我们返回了inputValue的值；在set方法里，我们将value的值设为了设置的新值。同时，在template中，我们则使用了computedValue这个计算属性，将它的值输出到页面上。

这样，当我们在Input组件中输入新的值的时候，就可以触发computedValue的更新，从而实现真正的响应式更新。

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