Vue component communication: use v-pre directive to skip compilation communication

Vue component communication: Use v-pre directive to skip compilation communication

Vue is a popular JavaScript framework for building user interfaces. In Vue, components are the basic units for building interfaces. Communication between components is a common requirement in Vue development, and is usually implemented using props and events.

However, sometimes we may want to have a special way of communication between components, that is, skipping compiled communication. This communication method can be achieved using the v-pre instruction. This article will introduce how to use the v-pre directive to skip compilation communication and provide code examples.

First, let us understand the role of the v-pre instruction. In Vue, if we use the {{}} syntax in the template, Vue will compile and parse the expression. Using the v-pre directive can tell Vue to skip compiling this part.

Now suppose we have two components: parent and child. We want to pass data from the parent component to the child component and display it in the child component. We can achieve this by using the v-pre directive in the parent component.

First, let us create the code for the parent component:

<template>
  <div>
    <child v-pre :data="data"></child>
  </div>
</template>

<script>
import Child from './Child.vue'

export default {
  components: {
    Child
  },
  data() {
    return {
      data: 'Hello, child!'
    }
  }
}
</script>

In the above code, we use the v-pre directive on the child component and bind the data attribute to the child component . This tells Vue to skip the compilation part and pass the data attribute directly to the child component.

Then, let us take a look at the code of the child component:

<template>
  <div>
    <h1 id="data">{{ data }}</h1>
  </div>
</template>

<script>
export default {
  props: {
    data: {
      type: String,
      default: ''
    }
  }
}
</script>

In the child component, we use the data attribute to receive the data passed by the parent component and display it in the template.

Now, we have completed the code for skipping compilation communication using the v-pre directive. Let's take a look at the results.

When the data attribute of the parent component changes, the data in the child component will be updated accordingly. This is because Vue will listen for changes in the data attribute of the parent component and pass the new attribute value to the child component.

To summarize, the v-pre directive can be used to skip compiled component communication. We can achieve this communication method by using the v-pre directive in the parent component and passing the attribute value to the child component. In actual development, it is necessary to decide whether to use the v-pre instruction and when to use it according to the specific situation.

I hope this article will help you understand Vue component communication and use the v-pre directive to skip compilation communication. If you have any questions or suggestions, please feel free to leave a message. thanks for reading!

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