Setting a default value in Vue props if it doesn't pass validation: A guide

Is it possible to assign a default value to a prop using a validator? For instance, if the current prop does not pass the validator and is less than 3, I would like to automatically set the value to 1. Here's an example:

currentStep: {
      type      : Number,
      required  : true,
      validator : (value) => {
        return value <= 3;
      },
      default   : 1
} 

Answer №1

The function called validator will always give you a true or false response, it is not meant to provide any other type of output. If you need to compute a property based on a prop and validate it, you can use a computed property like this:

props:{
   currentNumber: {
      type      : Number,
      required  : true,
      default   : 1
 },
},
computed:{
  number(){
      return this.currentNumber<=3 ? 1 : this.currentNumber
  }
}

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Issue with deep linking functionality on S3 storage service turning out to be

After successfully deploying my angular5 app to: http://myApp.s3domain.amazonaws.com The Angular router is automatically directing me to http://myApp.s3domain.amazonaws.com/home However, when I try to access a link with a unique parameter like so: http:/ ...

Difficulty in packaging JavaScript resources within Laravel Project

Having trouble setting JS functions as global in my project: In the 'resources\js"', I have: numerosALetras.js: /////////////////////////// function unidades_nal(n){ ... } function decenas_nal(n){ ... } function centenas_nal(n){ ...

Developing a pagination element

I'm currently working on developing a pagination component. Let's say my API returns "pages": 9 For instance, if there are 9 pages to display, I want to limit the list to show only 5 pages and add three dots, as shown in the image. Is ...

Troubleshooting: Resolving the Issue of Undefined Property Reading Error

I am currently working on a code snippet to render filtered data: const tasks = [{ task: "Complete homework", description: "Math and Science assignments." }, { task: "Walk the dog", description: "Take him for a stroll in the park." }, { ...

A guide on efficiently updating multiple Vue 3 components when a Pinia array undergoes changes

I'm facing an issue where multiple components accessing the same store don't respond to updates unless I manipulate a DOM element to trigger a new render. Within my Pinia store, I have an array and an update method: let MyArray: IMyItem[] = ...

Define a universal URL within JavaScript for use across the program

When working with an ASP.NET MVC application, we often find ourselves calling web service and web API methods from JavaScript files. However, a common issue that arises is the need to update the url in multiple .js files whenever it changes. Is there a me ...

Developing AJAX Post Functionality Using Only Vanilla Javascript

Can I achieve AJAX Post in Pure Javascript without using the xmlhttprequest object? Consider a basic form like this: <form action="request.php" id="register_form"> <input type="text" name="first_name" placeholder="First Name"> <input t ...

What steps are necessary to instruct multer to store the file in a specific directory?

Having some issues with multer while trying to save an image in a specific folder. The path for the file gets uploaded to mlab successfully, but the problem arises when attempting to retrieve the image from the designated folder as it fails to save there ...

Patience is key when using JavaScript

I have a JavaScript function that is responsible for updating my data. When the user clicks multiple times, I need to wait for the second click until the first one has finished processing, and so on. $scope.isLastUpdateFinished = true; $ ...

Avoiding the sudden appearance of unstyled content in Single-File Components

I am looking to update my HTML navigation <div id="header-wrapper"> <div id="header-logo-title"> <nav> <ul id='mainNav'> <li>Home</li> </ul> </nav> ...

Is it possible to use Vuelidate for password validation in Vue.js?

I found a helpful reference on How to validate password with Vuelidate? validations: { user: { password: { required, containsUppercase: function(value) { return /[A-Z]/.test(value) }, containsLowercase: fu ...

What is the best way in Angular to focus on an input field using its name, model, or id?

My goal is to create a form where, upon leaving field one (blur), the system will check if the data inputted is the word "test". If the data does not contain this word, I want the focus to return to field 1. <form name='yourForm' novalidate n ...

Erase jQuery from the text

I am struggling with splitting or removing text from a filename. For example, if I have filenames like: 200726100_50-0002.JPG 230514008_60-0001.JPG The desired result should be: 230514008_60.JPG 200726100_50.JPG Am I not using the split function cor ...

Tips for parsing a JSON object efficiently

Javascript var obj = { "name" : ["alex","bob","ajhoge"], "age" : [30,31,33] }; To display the value "alex," you can use: document.write(obj["name"][0]) But how can we filter through 'obj' to retrieve all data like this? html <ul ...

Unable to insert HTML code into a div upon clicking an image button

I am in the process of developing a website dedicated to radio streams, and I was advised to utilize Jquery and AJAX for loading HTML files into a div upon button click. This way, users wouldn't have to load an entirely new page for each radio stream. ...

The command 'npm install -g bigcommerce-stencil/stencil-cli' failed to run properly in the Windows command prompt

Having successfully completed all installations on my Windows 7 SP1 PC, I attempted to run the following command: npm install -g bigcommerce-stencil/stencil-cli Unfortunately, I encountered an error as shown in the screenshot below: error screen For mo ...

What could be the reason for my React Component not properly associating with the image?

The title appears to be correctly displayed, but there seems to be an issue with the images. I've thoroughly reviewed the code multiple times, but unfortunately, I'm unable to identify the problem. Please provide guidance on what changes need to ...

Is it possible for two-way binding to function in index.html within Angular 4?

Does two-way binding function in index.html? I have some links and metadata in index.html. How can we define head parameters in a component? <head> <meta name="og:title" content={{titleValue}}> <meta name="og:url" content={{urlValue}}> & ...

angular interpolation:issue arises when inserting URL stored in a variable

A challenge I'm facing involves adding a dynamic id to a YouTube URL, which looks something like this: <iframe width="460px" height="415px" ng-src="{{post.youtube_id}}" frameborder="0" allowfullscreen></iframe> One of the URLs I'm a ...

What steps should I take to display a Material UI grid in React without triggering the warning about the missing unique key

In my current project, I am utilizing React and Material UI to display a grid. The grid's rows are populated from an array of data, with each row containing specific information in columns structured like this: <Grid container> {myData.map((re ...