Checkbox and radio bindings in Svelte - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bind the checkbox value to the variable.

Svelte

<input type="checkbox" bind:checked=[1] />

Drag options to blanks, or click blank then click option'

AisChecked

BcheckedValue

Cvalue

Dselected

Attempts:

3 left

💡 Hint

Common Mistakes

Using bind:value instead of bind:checked for checkboxes.

Binding to a variable name not declared in the script.

The bind:checked directive connects the checkbox's checked state to the variable isChecked.

2fill in blank

medium

Complete the code to bind the radio button group to the variable.

Svelte

<input type="radio" name="color" value="red" bind:group=[1] />

Drag options to blanks, or click blank then click option'

AselectedColor

BcolorValue

Cchoice

Dcolor

Attempts:

3 left

💡 Hint

Common Mistakes

Using bind:checked instead of bind:group for radio buttons.

Using different variable names for each radio button instead of one group variable.

The bind:group directive binds all radio buttons with the same group to the variable color.

3fill in blank

hard

Fix the error in the checkbox binding code.

Svelte

<input type="checkbox" bind:value=[1] />

Drag options to blanks, or click blank then click option'

AisChecked

Bvalue

Cchecked

Dselected

Attempts:

3 left

💡 Hint

Common Mistakes

Using bind:value for checkboxes causes the binding to fail.

Not using any binding directive.

Checkboxes should use bind:checked to bind their checked state, not bind:value.

4fill in blank

hard

Fill both blanks to bind a group of radio buttons and set the variable.

Svelte

<script>
  let [1] = 'blue';
</script>
<input type="radio" name="color" value="blue" bind:group=[2] />

Drag options to blanks, or click blank then click option'

AselectedColor

Bcolor

Cchoice

Dselected

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in declaration and binding without matching.

Not initializing the variable with a default value.

The variable selectedColor is declared and bound to the radio group using bind:group={color}. Here, the variable names differ but the binding must match the declared variable.

5fill in blank

hard

Fill all three blanks to create a checkbox bound to a variable and display its state.

Svelte

<script>
  let [1] = false;
</script>
<label>
  <input type="checkbox" bind:checked=[2] />
  Checked: [3]
</label>

Drag options to blanks, or click blank then click option'

AisChecked

Bchecked

DcheckedValue

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in declaration, binding, and display.

Binding to bind:value instead of bind:checked.

The variable isChecked is declared and bound to the checkbox's checked state. The label displays the current value of isChecked.