v-model with radio buttons in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does v-model do when used with radio buttons in Vue?

v-model binds the selected radio button's value to a Vue data property. When a radio button is clicked, the data updates automatically.

beginner

How do you set up multiple radio buttons to bind to the same data property using v-model?

Give each radio button the same v-model binding and different value attributes. Vue updates the data property to the clicked button's value.

beginner

What type of data property should you use with radio buttons and v-model?

Use a simple data property (string, number, or boolean) that matches the radio buttons' value types.

intermediate

Why is it important to have unique value attributes on radio buttons sharing the same v-model?

<p>Unique <code>value</code> attributes let Vue know which option is selected. Without unique values, Vue can't distinguish between choices.</p>

intermediate

How does Vue update the UI when the bound data property changes programmatically with v-model on radio buttons?

Vue automatically checks the radio button whose value matches the updated data property, keeping UI and data in sync.

What happens when you click a radio button bound with v-model?

A The page reloads

B Nothing changes in the data

C The bound data property updates to the radio button's value

D All radio buttons get selected

Clicking a radio button updates the bound data property to that button's value via v-model.

How do you bind multiple radio buttons to the same data property?

A Give them the same <code>v-model</code> and different <code>value</code> attributes

B Give them different <code>v-model</code> bindings

C Use <code>v-bind</code> instead of <code>v-model</code>

D Use a checkbox instead

Multiple radio buttons share the same v-model but have unique value attributes to bind properly.

What type of data should the v-model property be for radio buttons?

A An object

B A string, number, or boolean matching the radio values

C An array

D A function

The data property should be a simple type matching the radio buttons' value types.

What happens if radio buttons bound with v-model have the same value attribute?

A Vue throws an error

B Both buttons get selected

C The first button is always selected

D Vue can't distinguish which is selected

Unique value attributes are needed so Vue can tell which radio button is selected.

If you change the bound data property in code, what happens to the radio buttons?

A The radio button matching the new value gets checked

B Nothing changes in the UI

C All radio buttons get unchecked

D The page reloads

Vue updates the UI to check the radio button whose value matches the new data property.

Explain how v-model works with radio buttons in Vue.

Think about how Vue keeps data and UI in sync with radio buttons.

Describe the steps to create a group of radio buttons bound to one data property using v-model.

Imagine setting up a question with multiple choice answers.