FormValidations/index.html at main · DecentCoders/FormValidations · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link
      href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
      rel="stylesheet"
      integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
      crossorigin="anonymous"
    />

    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    <title>Hellooo</title>
  </head>
  <body>
    <div
      id="app"
      class="container d-flex flex-column justify-content-center align-items-center vh-100"
    >
      <div class="bg-primary btn m-5 px-5 py-2 text-white">
        <h3>Welcome</h3>
      </div>
      <form class="row g-3 needs-validation w-75" @submit="validateForm">
        <div class="col-md-4">
          <label for="validationCustom01" class="form-label">First name</label>
          <input
            v-model="formInfo.firstName"
            type="text"
            class="form-control"
            :class="{
              'is-invalid': firstNameValid === false,
              'is-valid': firstNameValid === true
            }"
            id="validationCustom01"
            @blur="handleFocus('firstName')"
            required
          />
          <div class="valid-feedback">Looks good!</div>
          <div class="invalid-feedback">Please write your First Name.</div>
        </div>
        <div class="col-md-4">
          <label for="validationCustom02" class="form-label">Last name</label>
          <input
            type="text"
            class="form-control"
            :class="{
              'is-invalid': lastNameValid === false,
              'is-valid': lastNameValid === true
            }"
            id="validationCustom02"
            v-model="formInfo.lastName"
            @blur="handleFocus('lastName')"
            required
          />
          <div class="valid-feedback">Looks good!</div>
          <div class="invalid-feedback">Please write your Last Name.</div>
        </div>
        <div class="col-md-4">
          <label for="validationCustomUsername" class="form-label"
            >Username</label
          >
          <div class="input-group has-validation">
            <span class="input-group-text" id="inputGroupPrepend">@</span>
            <input
              type="text"
              class="form-control"
              :class="{
                'is-invalid': userNameValid === false,
                'is-valid': userNameValid === true
              }"
              id="validationCustomUsername"
              aria-describedby="inputGroupPrepend"
              v-model="formInfo.username"
              @blur="handleFocus('username')"
              required
            />
            <div class="valid-feedback">Looks good!</div>
            <div class="invalid-feedback">Please choose a username.</div>
          </div>
        </div>
        <div class="col-md-6">
          <label for="validationCustom03" class="form-label">City</label>
          <input
            type="text"
            class="form-control"
            :class="{
              'is-invalid': cityValid === false,
              'is-valid': cityValid === true
            }"
            v-model="formInfo.city"
            @blur="handleFocus('city')"
            id="validationCustom03"
            required
          />
          <div class="invalid-feedback">Please provide a valid city.</div>
        </div>
        <div class="col-md-3">
          <label for="validationCustom04" class="form-label">State</label>
          <select
            class="form-select"
            :class="{
              'is-invalid': stateValid === false,
              'is-valid': stateValid === true
            }"
            v-model="formInfo.state"
            id="validationCustom04"
            @blur="handleFocus('state')"
            required
          >
            <option selected disabled value="">Choose...</option>
            <option>Dhaka</option>
            <option>Barisal</option>
            <option>Citagaon</option>
            <option>Sylet</option>
            <option>Rangpur</option>
          </select>
          <div class="invalid-feedback">Please select a valid state.</div>
        </div>
        <div class="col-md-3">
          <label for="validationCustom05" class="form-label">Zip</label>
          <input
            type="text"
            v-model="formInfo.zip"
            @input="formInfo.zip = formInfo.zip.replace(/\D/g, '')"
            :class="{
              'is-invalid': zipValid === false,
              'is-valid': zipValid === true
            }"
            class="form-control"
            id="validationCustom05"
            @blur="handleFocus('zip')"
            required
          />
          <div class="invalid-feedback">Please provide a valid zip.</div>
        </div>
        <div class="col-12">
          <div class="form-check">
            <input
              class="form-check-input"
              :class="{
                'is-invalid': termsValid === false,
                'is-valid': termsValid === true
              }"
              type="checkbox"
              v-model="formInfo.terms"
              @blur="handleFocus('terms')"
              required
            />

            <label class="form-check-label" for="invalidCheck">
              Agree to terms and conditions
            </label>
            <div class="invalid-feedback" id="invalidCheck">
              You must agree before submitting.
            </div>
          </div>
        </div>
        <div class="col-12">
          <button class="btn btn-primary" type="submit">Submit form</button>
        </div>
      </form>
    </div>
    <script>
      const { createApp, ref, watch, computed } = Vue;
      createApp({
        setup() {
          const formInfo = ref({
            firstName: "",
            lastName: "",
            username: "",
            city: "",
            state: "",
            zip: "",
            terms: false,
          });
          const touchedFields = ref({
            firstName: false,
            lastName: false,
            username: false,
            city: false,
            state: false,
            zip: false,
            terms: false,
          });
          function handleFocus(fieldName) {
            touchedFields.value[fieldName] = true;
          }
          const firstNameValid = computed(() => {
            if (!touchedFields.value.firstName) return null;
            return formInfo.value.firstName.trim().length > 0;
          });
          const lastNameValid = computed(() => {
            if (!touchedFields.value.lastName) return null;
            return formInfo.value.lastName.trim().length > 0;
          });
          const userNameValid = computed(() => {
            if (!touchedFields.value.username) return null;
            return formInfo.value.username.trim().length > 0;
          });
          const cityValid = computed(() => {
            if (!touchedFields.value.city) return null;
            return formInfo.value.city.trim().length > 0;
          });
          const stateValid = computed(() => {
            if (!touchedFields.value.state) return null;
            return formInfo.value.state.trim().length > 0;
          });
          const zipValid = computed(() => {
            if (!touchedFields.value.zip) return null;
            return formInfo.value.zip.trim().length > 0;
          });
          const termsValid = computed(() => {
            if (!touchedFields.value.terms) return null;
            return formInfo.value.terms;
          });

          function validateForm(event) {
            event.preventDefault();
            // Set all fields as touched
            Object.keys(touchedFields.value).forEach((field) => {
              touchedFields.value[field] = true;
            });

            if (
              firstNameValid.value &&
              lastNameValid.value &&
              userNameValid.value &&
              cityValid.value &&
              stateValid.value &&
              zipValid.value &&
              termsValid.value
            ) {
              alert(
                "Form submitted successfully! Thank you, " +
                  formInfo.value.firstName +
                  " " +
                  formInfo.value.lastName +
                  ", your username is " +
                  formInfo.value.username +
                  ". You are from " +
                  formInfo.value.city +
                  ", " +
                  formInfo.value.state +
                  ", " +
                  formInfo.value.zip +
                  ". You have agreed to the terms."
              );
              console.log({
                firstName: formInfo.value.firstName,
                lastName: formInfo.value.lastName,
                username: formInfo.value.username,
                city: formInfo.value.city,
                state: formInfo.value.state,
                zip: formInfo.value.zip,
                terms: formInfo.value.terms,
              });
            } else {
              alert("Please fill out all required fields correctly.");
              console.log("Form validation failed");
            }
          }

          return {
            formInfo,
            firstNameValid,
            lastNameValid,
            userNameValid,
            cityValid,
            stateValid,
            zipValid,
            termsValid,
            validateForm,
            handleFocus,
          };
        },
      }).mount("#app");
    </script>
    <script
      src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
      integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
      crossorigin="anonymous"
    ></script>
  </body>
</html>