Hello! One of the most common tasks in software development is input validation. Any app has different forms that submit some data, and we want to check numerous conditions: that fields are not empty and that they have a proper format (like emails), length, and so on. Yes, we can do it manually, but this is not the best path. It is better to use a specific validation library. For Vue.js apps, the popular choice is Vueildate. In this post, we will see how to install it to your Vue apps, how to use it, and observe the most important built-in validators.

What Is Vuelidate?

Let have a simple example. You’re building a signup form. You want to check that user provides a correct input, like:


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