Vue Get Data

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Modified5 years ago. I want to know how to get data from Vue.component and send to this >>var app = new Vue({ })<

I want to get data from above code and send to this code var app = new Vue({ data:})Anyone understand me please help.Thank you.

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In Vue.js parent-child relationship is run by . 1) passing props from parent to child .

2) emitting custom events from child to parent. So, if you need to pass some data from child to parent - use this.$emit to emit a custom event with your data, and listen for this event in parent component with v-on:myevent or @myevent shorthand.

The data you pass with event is found in $event variable. Example:

Fetching Before Navigation #

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  • 3434 bronze badges. The Node.js provides a Vue.js data() method to the user.
  • Basically in vue.js data() we defined collection of logic and stored in component using vue.js we can access data Node.jsassociated with a vue instance.

Introduction to Vue.js data()

Components are reusable as many times as per requirement.

But each time it uses a separate component and also creates a new instance.

When we use a data function at that time each instance maintains a separate copy of the return data object.

#2 Run the Vue CLI Starter App in the Browser

Most of vue.js uses API to fetch and post data. It is safe because it does not affect the changes outside the scope.

Explanation: The above syntax component is reusable with instance name and notice that when we use data does not provide objects directly.

Instead a component data option is function so each instance is maintaining a separate copy of return data by using the following syntax.

We must install Node.js 10.x and above on your system and you can verify by using node –v command in your terminal.

We must install the latest version of Vue on your system. We must install the Vue CLI 3.0 version on your system.

We required basic knowledge about Node.js. We required basic knowledge about Vue.js and components.

Let’s see how we can implement Vue.js data() with different examples as follows.

#6 Create a User-Friendly GUI

Basic example of data method. Node JS Training Program (3 Courses, 7 Projects)3 Online Courses | 7 Hands-on Projects | 25+ Hours | Verifiable Certificate of Completion | Lifetime Access 4.5 (8,225 ratings).

Related Courses. Vue JS Training (1 Courses, 3 Project)JavaScript Training Program (39 Courses, 23 Projects, 4 Quizzes).

In this example, we only made changes in the App.vue file in which we added a data method to access the title. Illustrate the end result of the above declaration by using the use of the following snapshot. For Data with Method. Explanation: In the above example first we created a data function that returns an object.

Every property of vue is added to the vue reactivity system so that if we make some changes in the program that is updated.

So that we add title property in our template by using {{}} double curly braces. Vue js must require {{}} double curly to pass javaScript Expression. In the second part of the program we have created a method and the method also has an object.

Here we create a Msgmethod which returns a string. Inside the method, we access data object property by using this and finally we added in the template tag.

Illustrate the end result of the above declaration by using the use of the following snapshot.

Fetching data using Axios

Explanation: This is another simple example of data function with methods. Illustrate the end result of the above declaration by using the use of the following snapshot.

Emit data in vue.js with event. Explanation: In the above component, we sent messages from the child component to the parent component.

#7 Bonus: Fetching the data using axios

In the above template, we use a button to send the message to the parent component. See in this template we use the changes function whenever we submit a message to the parent component.

Then we added the following code in the App.vue file. Explanation: In this file actually we are listing our event. In the first component, we just send messages from the child component to the parent component but in this we actually manipulate them.

Final Words

In this file, we import the HelloWorld.vue component for listening to custom events by using changeMsg function.