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Vuetify Check if input contains special characters

In Vuetify, ensuring that user input does not contain special characters is a common task when developing web applications. This post will guide you through the process of checking for special characters in user input and preventing invalid data entry using Vuetify

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Setting Up the Vuetify Form: Filtering Out Special Characters

To create a Vuetify form that checks for special characters, you can start by setting up a basic form. Here's a sample code snippet to get you started:

Vuetify: Filtering Out Special Characters

<v-container>
    <h3>Vuetify Check if input contains special characters</h3>
    <v-text-field v-model="inputText" :rules="inputRules" label="Input" variant="underlined" clearable></v-text-field>
</v-container>

Run

This snippet defines a simple Vuetify container containing a text field for user input. It binds the input to the inputText variable and associates it with validation rules specified in inputRules.

Custom Validation Rules with Vue and Vuetify: Detecting Special Characters

To prevent invalid input that contains special characters, you can define custom validation rules for the input field. In this example, we use Vue and Vuetify to accomplish this

Preventing Invalid Input in Vuetify: Detecting Special Characters

<script type="module">
    const { createApp } = Vue
    const { createVuetify } = Vuetify
    const vuetify = createVuetify()
    const app = createApp({
        data() {
            return {
                inputText: "",
                containsSpecialCharacters: false,
                inputRules: [
                    (v) => !!v || "Input is required",
                    (v) => !/[!@#$%^&*()_+{}\[\]:;<>,.?~\\|]/.test(v) || "Input contains special characters",
                ],
            };
        },
    }).use(vuetify).mount('#app'); // Mount the app to the #app element
</script>

In this script, we define a Vue app with the inputText variable to store the user's input and the containsSpecialCharacters variable to track the presence of special characters. We also specify inputRules, an array of validation functions. These rules include checking whether the input is not empty and whether it contains special characters using a regular expression.

Output of Vuetify Validate Input for Special Characters

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Conclusion:

In this tutorial, we've demonstrated how to use Vuetify to check if an input contains special characters. By implementing custom input validation rules, you can ensure that user input meets your specific requirements