How to transfer value by jumping vue

There are two main ways to pass data in Vue: props: one-way data binding, passing data from the parent component to the child component. Events: Pass data between components using events and custom events.

Transfer of data in Vue

There are two main ways to pass data in Vue.js:

1. props

props is a one-way data binding method that passes data from parent components to child components. The parent component declares the data to be passed through props attribute, and the child component receives this data through props .

Example:

Parent component:

 <code class="html"><template> <child-component :message="message"></child-component> </template> <script> export default { data() { return { message: &#39;Hello, Vue!&#39; } } } </script></code>

Subcomponents:

 <code class="html"><template> <p>{{ message }}</p> </template> <script> export default { props: [&#39;message&#39;] } </script></code>

2. Events and custom events

Data can be passed through events in Vue.js, including native events and custom events. Native events are listened to using v-on directive, and custom events are triggered using the $emit method.

Example:

Parent component:

 <code class="html"><template> <button>点击</button> </template> <script> export default { methods: { handleClick() { this.$emit(&#39;custom-event&#39;, &#39;传递的数据&#39;) } } } </script></code>

Subcomponents:

 <code class="html"><template> <div> {{ data }} </div> </template> <script> export default { methods: { handleCustomEvent(data) { this.data = data } }, data() { return { data: &#39;&#39; } } } </script></code>

In addition to these two methods, Vue.js has other methods for passing data, such as Vuex , localStorage , and sessionStorage . Which method to choose depends on the specific scenario and data transmission requirements.

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