What function type is used to declare components in vue

The function type of the declared component in Vue.js is defineComponent(), which contains the following options: data: component data object props: component attribute template: component HTML template methods: component method

The function type used to declare components in vue

In Vue.js, the function type used to declare components is defineComponent( ).

defineComponent() Function structure

<code class="typescript">defineComponent<Props, RawBindings = {}, D = {}, C extends ComputedOptions = {}, M extends Methods = {}>(options: ComponentOptions<Props, RawBindings, D, C, M>): ComponentPublicInstanceConstructor<Props>;</code>

Parameters

• options: An object containing the component’s options. The following are some optional properties of the options object:

  • data: A function that returns the component's data object.
  • props: An object that defines the properties of the component.
  • template: A string representing the HTML template of the component.
  • methods: An object containing the component’s methods.

Return value

defineComponent() The function returns a component constructor. This constructor can be used to create an instance of the component.

Example

The following is a simple Vue component that declares a name attribute and a greet() method :

<code class="typescript">import { defineComponent } from 'vue';

const MyComponent = defineComponent({
  props: {
    name: String,
  },
  methods: {
    greet() {
      console.log(`Hello, ${this.name}!`);
    },
  },
});

export default MyComponent;</code>

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