Vue.js Forms and Validation Quiz
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Question 1/10
What is the purpose of the
lazy
modifier in Vue's v-model
?
Select your answer
Question 2/10
Given the following component methods, which one would be best for validating a form on submit in Vue.js?
methods: {
validateForm() {
// validation code
},
onSubmit() {
this.validateForm();
// submit form
}
}
Select your answer
Question 3/10
How do you prevent a form submission in Vue.js if validation fails?
methods: {
onSubmit(event) {
if (!this.isValid) {
event.preventDefault();
}
}
}
Select your answer
Question 4/10
When using
v-model
on a checkbox, what does the value bind to when it is checked?
<input type="checkbox" v-model="checked">
Select your answer
Question 5/10
How can you reset a form after submission in a Vue.js application?
methods: {
resetForm() {
this.formValues = {};
}
}
Select your answer
Question 6/10
Which Vue.js directive is used to bind input values to state properties?
Select your answer
Question 7/10
How can you disable a form submit button until the form is valid in Vue.js?
<button :disabled="!isFormValid">Submit</button>
Select your answer
Question 8/10
How can you handle form component validation using a third-party library like Vuelidate?
Select your answer
Question 9/10
In Vue.js, how can you dynamically add a class to an input with an error?
<input :class="{'error-class': hasError}">
Select your answer
Question 10/10
Which event modifier would you use in Vue.js to submit a form when the enter key is pressed in an input field?
Select your answer
Your Results
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Your Answers
Question 1/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
What is the purpose of the <code>lazy</code> modifier in Vue's <code>v-model</code>?
Available answers
The
lazy
modifier updates the model's value on the 'change' event instead of 'input'.
Question 2/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
Given the following component methods, which one would be best for validating a form on submit in Vue.js?
methods: {
validateForm() {
// validation code
},
onSubmit() {
this.validateForm();
// submit form
}
}
Available answers
onSubmit
is typically used to handle form submission and would call validateForm
to ensure data is valid before proceeding.
Question 3/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
How do you prevent a form submission in Vue.js if validation fails?
methods: {
onSubmit(event) {
if (!this.isValid) {
event.preventDefault();
}
}
}
Available answers
To prevent form submission, use
event.preventDefault()
within the submit event handler.
Question 4/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
When using <code>v-model</code> on a checkbox, what does the value bind to when it is checked?
<input type="checkbox" v-model="checked">
Available answers
v-model
on a checkbox binds to a boolean, representing if the checkbox is checked or not.
Question 5/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
How can you reset a form after submission in a Vue.js application?
methods: {
resetForm() {
this.formValues = {};
}
}
Available answers
You typically reset the form by reassigning the form data to its initial values.
Question 6/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
Which Vue.js directive is used to bind input values to state properties?
Available answers
The
v-model
directive in Vue.js creates a two-way binding between form inputs and state properties.
Question 7/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
How can you disable a form submit button until the form is valid in Vue.js?
<button :disabled="!isFormValid">Submit</button>
Available answers
You can use a computed property to determine form validity and bind it to the
disabled
attribute of the button.
Question 8/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
How can you handle form component validation using a third-party library like Vuelidate?
Available answers
With Vuelidate, you define your validation rules and integrate them into your Vue component to handle validation.
Question 9/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
In Vue.js, how can you dynamically add a class to an input with an error?
<input :class="{'error-class': hasError}">
Available answers
You can bind a class dynamically based on a state or computed property. In this case,
:class
is used with an object.
Question 10/10
😊 Your
answer was correct
🙁 Your
answer was incorrect
Which event modifier would you use in Vue.js to submit a form when the enter key is pressed in an input field?
Available answers
@keyup.enter
listens for the enter key press and executes the associated method, useful for submitting forms.