vue props function code example

Example 1: vue js default prop

props: {
  name: {
    type: String,
    default: 'John Doe'
  }
}

Example 2: props vue js

Vue.component('my-component', {
  props: {
    // Basic type check (`null` and `undefined` values will pass any type validation)
    propA: Number,
    // Multiple possible types
    propB: [String, Number],
    // Required string
    propC: {
      type: String,
      required: true
    },
    // Number with a default value
    propD: {
      type: Number,
      default: 100
    },
    // Object with a default value
    propE: {
      type: Object,
      // Object or array defaults must be returned from
      // a factory function
      default: function () {
        return { message: 'hello' }
      }
    },
    // Custom validator function
    propF: {
      validator: function (value) {
        // The value must match one of these strings
        return ['success', 'warning', 'danger'].indexOf(value) !== -1
      }
    }
  }
})

Example 3: pass method as props vue

//You should probably not pass methods as props in Vue, instead, emit an event.

//In parent component, do for example:

<Child-Component @alert="sayHi" />

methods: {
  sayHi() {
	alert('Hi')
  }
}

// In child component, do:

<element @click="doSomething">

methods: {
  doSomething() {
  	this.$emit('alert')
  }
}

Example 4: vuejs props

export default {
  name: 'Camera',
  props: ['name', 'img'],
}