svelte/site/content/tutorial/04-logic/02-else-blocks/text.md

title
Else blocks

Since the two conditions — if user.loggedIn and if !user.loggedIn — are mutually exclusive, we can simplify this component slightly by using an else block:

<button on:click={toggle}>
	{#if user.loggedIn}
			Log out
	{:else}
			Log in
	{/if}
</button>

A # character always indicates a block opening tag. A / character always indicates a block closing tag. A : character, as in {:else}, indicates a block continuation tag. Don't worry — you've already learned almost all the syntax Svelte adds to HTML.