Validating during keypress

30-Aug-2020 20:41

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In tandem with Vuelidate-error-extractor, displaying error messages under each input can go from a tedious repetitive chore, to simply adding a wrapping component or two, that do it all for you.

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The bundled Check out custom templates docs for a detailed explanation on how to make your own error display.

Being so flexible means that you can adapt it to any Vue UI framework you wish.

This post will describe an Angular directive The source code is available in this Git Hub repo and I have published it as an npm package (@uiowa/digit-only).

With the help of Angular directive, input box will only allow [0–9] when typing, pasting or drag/dropping.

For example, you can specify “credit card” mask in Vuetify text fields. When you copy & paste a string to a credit card input field (example) or keep typing letters, you will notice a flash of string being removed from the input field.

The structure must resemble that of the form object, but the number of validation rules can be dynamic and change depending on which fields need validation.

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Here is a list of popular UI frameworks and examples how to implement it for each one: you need to have a summary of all the errors in a form, be it on top or at the bottom.

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You can use the prebuilt components for Foundation or Bootstrap, use the object we defined earlier.

Here's a live example: Vuelidate-error-extractor loops the validations for each form data and checks each rule if it's valid or not.