Build a Form Component with Element UI

Introduction

In this project, you will learn how to use Element UI, a popular Vue.js UI library, to build a form component and integrate it into a web application.

👀 Preview

finished form component preview

🎯 Tasks

In this project, you will learn:

How to understand the initial code structure and file organization
How to identify and fix the issue that is causing the form to disappear
How to ensure the form is displayed correctly in the web application

🏆 Achievements

After completing this project, you will be able to:

Use Element UI to create form components in a Vue.js application
Troubleshoot and fix issues related to the integration of UI components
Understand the importance of properly including and referencing external libraries in a web application

Set Up the Project Structure

In this step, you will set up the project files and structure. Follow the steps below to complete this step:

Open the project folder. The directory structure is as follows:

├── element-ui-2.15.10
│   ├── index.css
│   └── index.js
├── index.html
├── js
│   ├── http-vue-loader.js
│   └── vue.min.js
└── myform.vue

Where:

index.html is the main page.
myform.vue is the encapsulated form component file.
js is the folder for storing Vue.js related files.
element-ui-2.15.10 is the folder for storing element-ui files.

Click on Go Live button in the bottom right corner of WebIDE, to run the project.

Next, open the "Web 8080" on the top of the VM and manually refresh the page to see the following effect in your browser:

Image Description

The form component myform in the initial code is not displayed in the browser.

Identify the Issue

In this step, you will learn about the initial code provided for the project while identifying the problem that caused the form to disappear.

Open the index.html file. This is the main HTML file that serves as the entry point for the application.
Examine the code in index.html. You can see that it includes the necessary Vue.js and Element UI files, and it also includes a reference to the myform.vue component.
Open the myform.vue file. This is the Vue component that contains the form you need to display.
Understand the structure of the myform.vue file. It includes the necessary HTML, JavaScript, and CSS for the form component.
Observe that the form is not being displayed in the browser, even though it is referenced in the index.html file.
Carefully review the index.html file again.
Notice that the element-ui-2.15.10/index.js file does not have index.html introduced.

Fix the Issue

In this step, you will fix the issue and ensure that the form is displayed correctly.

Open the index.html file.
Add the introduction of the element-ui-2.15.10/index.js file at the bottom inside the <head>.

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Vanished Into Thin Air</title>
    <script src="./js/vue.min.js"></script>
    <script src="./js/http-vue-loader.js"></script>
    <!-- element-ui style -->
    <link rel="stylesheet" href="./element-ui-2.15.10/index.css" />

    <!-- TODO: element-ui js -->
    <script src="./element-ui-2.15.10/index.js"></script>
  </head>
  <!-- ... -->
</html>

Save the changes to the index.html file.
Refresh the browser to see the updated page.
Ensure that the form is displayed as expected, as shown in the image below:

Image Description

Congratulations! You have successfully fixed the issue and displayed the form correctly.

Summary

Congratulations! You have completed this project. You can practice more labs in LabEx to improve your skills.