Select bindings in Svelte - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does binding a <select> element to a variable in Svelte do?

It connects the selected option in the dropdown to a variable, so when the user picks an option, the variable updates automatically.

beginner

How do you bind the selected value of a <select> element to a variable named choice in Svelte?

Use bind:value={choice} inside the <select> tag.

intermediate

Can you bind a <select multiple> element to an array in Svelte?

Yes, binding a multiple select binds the selected options as an array of values.

intermediate

What happens if you change the bound variable programmatically in Svelte?

The <select> element updates to show the option matching the new variable value.

beginner

Why is using bind:value with <select> better than manually handling on:change events?

Because it keeps the variable and UI in sync automatically, reducing code and mistakes.

How do you bind a single selected value from a <select> element to a variable color in Svelte?

A <code>&lt;select bind:selected={color}&gt;</code>

B <code>&lt;select bind:selection={color}&gt;</code>

C <code>&lt;select value={color}&gt;</code>

D <code>&lt;select bind:value={color}&gt;</code>

In Svelte, bind:value is used to bind the selected value of a <select> element.

What type of variable should you bind to a <select multiple> element?

A An array

B A number

C A string

D A boolean

For multiple selections, Svelte binds the selected options as an array of values.

If you update the bound variable in code, what happens to the <select> element?

A It stays the same

B It resets to the first option

C It updates to match the variable

D It throws an error

Svelte keeps the UI and variable in sync, so the <select> updates automatically.

Which event do you NOT need to manually handle when using bind:value on a <select>?

A <code>on:click</code>

B <code>on:change</code>

C <code>on:input</code>

D <code>on:submit</code>

Binding with bind:value automatically handles the change event for you.

What is the main benefit of using bind:value with <select> in Svelte?

A It automatically syncs the selected option with a variable

B It disables the select

C It styles the select element

D It adds keyboard shortcuts

The key benefit is automatic syncing between the UI and your variable.

Explain how to bind a <select> element to a variable in Svelte and what happens when the user changes the selection.

Think about how Svelte connects the dropdown choice to your code variable.

Describe how binding works differently for single select and multiple select elements in Svelte.

Consider the type of data each select type holds.