Vuetify

Vuetify Alert fade after a duration Vuetify Login Form Vuetify Toast Snackbar Demo Vuetify Disable Past Date in DatePicker Vuetify Scrollable Dialog Vuetify Dialog to Confirm Delete Vuetify input File get Selected file name Vuetify validate textarea character limit Vuetify V-Select multiple example Vuetify Checkbox Check All | Uncheck All Example Vuetify Disable Button for Certain Amount of Time Vuetify Validate Email Field Vuetify Change Button Color if Button active or selected Vuetify Change color of v-chip on click Vuetify Image Upload with Preview Vuetify Clear text field using ref Vuetify Disable Future date in Datepicker Vuetify Set Current Date in Datepicker Vuetify rule for Number Between 0 and 999 or no input Vuetify Validation Rule: Allow Empty String or Specific Number of Characters Vuetify Allow only alphanumeric characters in textfield Vuetify Rule Input Text only Accept Number and Dot Vuetify set Confirm Password Validation Rule in text-fields Vuetify Text Field Allow 10 digit Number Vuetify Add Comma to Input Field Automatically Vuetify Check if input contains special characters

Vuetify Allow only alphanumeric characters in textfield

Restrict textfield input to alphanumeric characters in Vuetify:In web application development, user input validation is essential to ensure data integrity and security. When working with Vuetify, a popular UI framework for Vue.js, you may want to restrict textfield input to alphanumeric characters. This post guides you through the process of implementing such validation in a Vuetify textfield.

written

reviewed

updated

Problem: Restricting User Input in Vuetify Textfields

Suppose you have a Vuetify textfield and you want to allow only alphanumeric characters and spaces in the user's input. To accomplish this, you can create a custom validation rule using regular expressions. Here's how it's done:

Step 1: Create the Vuetify Textfield

In your Vue.js template, define a Vuetify textfield with a label, model, and custom validation rule. Here's an example

Vuetify: Alphanumeric textfield validation

<v-container>
    <v-text-field v-model="inputText" clearable label="Only Alphanumeric Input Allow"
        :rules="[alphanumericRule]"></v-text-field>
</v-container>

Run

In the above code snippet, we have created a Vuetify textfield with the label "Only Alphanumeric Input Allowed." The v-model directive binds the input's value to the inputText data property, and the :rules attribute is set to an array containing our custom validation rule, alphanumericRule.

Step 2: Define the Validation Rule

Now, let's define the alphanumericRule method in your Vue instance. This method will use a regular expression to validate the input and ensure it contains only alphanumeric characters and spaces:

Preventing special characters in Vuetify textfields

<script>
    new Vue({
        el: '#app',
        vuetify: new Vuetify(),
        data() {
            return {
                inputText: "",
            };
        },
        methods: {
            alphanumericRule(value) {
                // Use a regular expression to validate that the input contains only alphanumeric characters
                return /^[a-zA-Z0-9\s]*$/.test(value) || 'Only alphanumeric characters and spaces are allowed';
            },
        },
    });
</script>

In the code above, we define a Vue instance with an alphanumericRule method. This method uses a regular expression, /^[a-zA-Z0-9\s]*$/, to test if the provided value contains only alphanumeric characters (letters and numbers) and spaces. If the input doesn't conform to this pattern, the method returns an error message, indicating that only alphanumeric characters and spaces are allowed.

Output of Vuetify: Allow only letters, numbers, and spaces in a textfield

Pasted Image

In summary, restricting textfield input to alphanumeric characters in Vuetify is achieved by creating a custom validation rule using regular expressions. This ensures that your web application's user input adheres to your specific requirements for data integrity and security. By following the steps outlined in this post, you can easily implement this validation in your Vuetify textfields and enhance the user experience while maintaining data quality