mirror of https://github.com/sveltejs/svelte
566 B
566 B
title |
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Assignments |
At the heart of Svelte is a powerful system of reactivity for keeping the DOM in sync with your application state — for example, in response to an event.
To demonstrate it, we first need to wire up an event handler. Replace line 9 with this:
<button on:click={incrementCount}>
Inside the incrementCount
function, all we need to do is change the value of count
:
function incrementCount() {
count += 1;
}
Svelte 'instruments' this assignment with some code that tells it the DOM will need to be updated.