Account
Sign in to you account
Sign In Sign Up

How to Get the Props Values In Vue.js?

13 minutes read

In Vue.js, you can access the values of props passed to a component using the this keyword with the name of the prop. Here's how you can get the props values in Vue.js:

  1. Define the props in the component options:
1

props: ['propName1', 'propName2']


  1. Access the prop values within the component methods, computed properties, or templates using the this keyword and the prop names:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12

// Within methods
methodName() {
  const propValue1 = this.propName1;
  const propValue2 = this.propName2;
}

// Within computed properties
computed: {
  computedProp() {
    return this.propName1 + this.propName2;
  }
}


  1. Use the prop values within the component's template:
1
2
3
4
5
6

<template>
  <div>
    <p>Prop Name 1: {{ propName1 }}</p>
    <p>Prop Name 2: {{ propName2 }}</p>
  </div>
</template>


Remember to replace 'propName1' and 'propName2' with the actual names of your props. These prop values can then be used in your component to display data or perform any necessary operations.

Best Vue.js Hosting Providers in 2024

1
DigitalOcean

Rating is 5 out of 5

DigitalOcean

Try It Now
2
AWS

Rating is 4.9 out of 5

AWS

Try It Now
3
Vultr

Rating is 4.8 out of 5

Vultr

Try It Now
4
Cloudways

Rating is 4.7 out of 5

Cloudways

Try It Now


How to get the props values in Vue.js?

In Vue.js, you can access the values of props inside the component using the this keyword.


Here is an example of how to get the props values in Vue.js:

  1. Define a prop in the component:
1
2
3
4

Vue.component('my-component', {
  props: ['message'],
  template: '<div>{{ message }}</div>'
})


  1. Pass the prop value when using the component:
1

<my-component message="Hello Vue.js"></my-component>


  1. Access the prop value inside the component:
1
2
3
4
5
6
7

Vue.component('my-component', {
  props: ['message'],
  template: '<div>{{ message }}</div>',
  mounted() {
    console.log(this.message);  // Output: Hello Vue.js
  }
})


In the above example, the prop message is passed as a string "Hello Vue.js" to the my-component. Inside the component, you can access the prop value using this.message and use it in the template or in the component's lifecycle methods like mounted.


How to define default values for props in Vue.js?

In Vue.js, you can define default values for props using the default property. Here's an example:

1
2
3
4
5
6
7
8
9

Vue.component('my-component', {
  props: {
    message: {
      type: String,
      default: 'Hello, World!'  // Default value for the prop
    }
  },
  template: '<div>{{ message }}</div>'
})


In the above example, the message prop is defined with a default value of 'Hello, World!'. This default value will be used if no value is passed to the prop when the component is used.


You can also define default values with a function. This is useful when the default value should be dynamic or complex. Here's an example:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11

Vue.component('my-component', {
  props: {
    counter: {
      type: Number,
      default: function () {
        return 0  // Default value is provided by a function
      }
    }
  },
  template: '<div>{{ counter }}</div>'
})


In the above example, the counter prop is defined with a default value provided by a function. The function is executed every time a new instance of the component is created, allowing you to set dynamic or complex default values.


What is the recommended way to pass props in Vue.js?

The recommended way to pass props in Vue.js is through explicit declaration and passing them as attributes to the child components.

  1. In the parent component, define the props that you want to pass to the child component by adding a props option.
1
2
3
4

Vue.component('child-component', {
  props: ['message'],
  // ...
});


  1. In the parent component's template, pass the props as attributes to the child component.
1

<child-component :message="parentMessage"></child-component>


Note: parentMessage is a variable in the parent component's data object.

  1. In the child component, access the received props by referencing them as properties of the component instance.
1
2
3
4

Vue.component('child-component', {
  props: ['message'],
  template: '<p>{{ message }}</p>',
});


In this example, the child-component receives the message prop and displays it using double curly braces {{ }} syntax.


By following this recommended approach, it provides a cleaner and more explicit way of passing and using props in Vue.js applications.

Best Vue.js Books to Read in 2024

1
Front-End Development Projects with Vue.js: Learn to build scalable web applications and dynamic user interfaces with Vue 2

Rating is 5 out of 5

Front-End Development Projects with Vue.js: Learn to build scalable web applications and dynamic user interfaces with Vue 2

Get Book Now
2
Vue.js 3 By Example: Blueprints to learn Vue web development, full-stack development, and cross-platform development quickly

Rating is 4.9 out of 5

Vue.js 3 By Example: Blueprints to learn Vue web development, full-stack development, and cross-platform development quickly

Get Book Now
3
Jump Start Vue.js

Rating is 4.8 out of 5

Jump Start Vue.js

Get Book Now
4
Vue.js: Up and Running: Building Accessible and Performant Web Apps

Rating is 4.7 out of 5

Vue.js: Up and Running: Building Accessible and Performant Web Apps

Get Book Now
5
Vue.js 3 Cookbook: Discover actionable solutions for building modern web apps with the latest Vue features and TypeScript

Rating is 4.6 out of 5

Vue.js 3 Cookbook: Discover actionable solutions for building modern web apps with the latest Vue features and TypeScript

Get Book Now
6
Vue.js in Action

Rating is 4.5 out of 5

Vue.js in Action

Get Book Now
7
Vue.js: 100 Interview Questions (Advanced Topics in Programming Book 28)

Rating is 4.4 out of 5

Vue.js: 100 Interview Questions (Advanced Topics in Programming Book 28)

Get Book Now


How to access props data in the child component?

In order to access props data in a child component, you can follow these steps:

  1. Pass the props to the child component from the parent component when rendering it. For example, if your child component is called "ChildComponent", and you want to pass a prop called "data", you can do it like this:
1

<ChildComponent data={propsData} />


  1. In your child component, you can access the data prop by using the props object. For example, you can access the "data" prop like this:
1
2
3
4

const ChildComponent = (props) => {
  console.log(props.data); // Accessing the data prop
  // Rest of the child component's logic
}


By accessing the "props.data" variable, you can use the passed data in your child component as desired.


How to pass dynamic values as props in Vue.js?

To pass dynamic values as props in Vue.js, you can use the v-bind directive or shorthand ":".

  1. First, define the prop in the child component. For example, let's say we have a child component called "ChildComponent":
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11

<template>
  <div>
    <p>{{ message }}</p>
  </div>
</template>

<script>
export default {
  props: ['message']
}
</script>


  1. In the parent component, use the v-bind directive or shorthand ":" to pass the dynamic value as a prop. For example:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20

<template>
  <div>
    <child-component :message="dynamicValue"></child-component>
  </div>
</template>

<script>
import ChildComponent from './ChildComponent.vue';

export default {
  components: {
    ChildComponent
  },
  data() {
    return {
      dynamicValue: 'Hello World'
    };
  }
}
</script>


In the example above, the dynamic value "dynamicValue" is passed to the prop "message" using v-bind or ":message". The child component will then receive and render the value of the prop.


How to pass props using URL parameters in Vue.js?

In Vue.js, you can pass props using URL parameters by retrieving the parameter values from the router and passing them as props to the component.


Here is an example of how you can achieve this:

  1. Define your route in the router configuration, specifying the parameter in the path:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10

...
routes: [
  {
    path: '/example/:id',
    name: 'Example',
    component: ExampleComponent,
    props: true // set props to true to pass route params as props
  },
],
...


  1. In your component, access the prop by declaring it in the props option:
1
2
3
4

export default {
  props: ['id'],
  ...
}


  1. Use the prop in your component's template or script:
1
2
3
4
5
6

<template>
  <div>
    <h2>Example Component</h2>
    <p>Passed ID: {{ id }}</p>
  </div>
</template>


  1. When navigating to the route, pass the parameter value as part of the URL:
1
2

<!-- Example usage -->
<router-link :to="{ name: 'Example', params: { id: 123 } }">Go to Example</router-link>


Now, when you navigate to the route, the id parameter will be passed as a prop to your component, and you can access it using this.id inside the component's methods or computed properties.


How to use props with v-for in Vue.js?

To use props with v-for in Vue.js, you can follow these steps:

  1. Define the props in the child component: Define the props that you want to pass from the parent component to the child component. You can define props using the props option in the child component definition.
1
2
3
4
5
6

Vue.component('child-component', {
  props: ['item'],
  template: `
    <div>{{ item }}</div>
  `
});


  1. Pass the props using v-bind in the parent component: In the parent component, use the v-bind directive to pass the props to the child component. Specify the name of the props as an attribute and its value as the data you want to pass.
1

<child-component v-for="item in items" v-bind:item="item" :key="item.id"></child-component>


  1. Use props in the child component: In the child component, use the props that you have defined to access the passed data.
1
2
3
4
5
6

Vue.component('child-component', {
  props: ['item'],
  template: `
    <div>{{ item }}</div>
  `
});


Now, when using v-for on the parent component, item will be passed as a prop to the child component for each iteration. You can access the prop item in the child component template to display the data.


Note: Make sure to provide unique keys using the :key directive when using v-for to render a list of components, as it helps Vue efficiently track the components and update them when the list changes.

Facebook Twitter LinkedIn Telegram

Related Posts:

How to Use Vue.js With Symfony?
To use Vue.js with Symfony, you can follow the following steps:Install Vue.js: Start by installing Vue.js in your Symfony project. You can either use the Vue CLI or include it via a CDN. Create a Vue Component: Create a new Vue component in your project. This ...
How to Create an Autocomplete Box Using Vue.js?
To create an autocomplete box using Vue.js, you can follow these steps:Set up Vue.js: Start by including Vue.js in your HTML file. You can do this by downloading Vue.js and including it locally or by using a content delivery network (CDN) link. Create a new Vu...
How to Create A Login Page With Vue.js And HTML?
To create a login page using Vue.js and HTML, you will follow these steps:Set up the Vue.js project: Start by creating a new Vue.js project or navigate to your existing project directory. Create the HTML structure: Open the HTML file and create the necessary s...