Just as you can add event listeners to any DOM element, you can add event listeners to the window object with <svelte:window>.
We've already got a handleKeydown function declared — now all we need to do is add a keydown listener:
App.svelte
<svelte:window on:keydown={handleKeydown} />As with DOM elements, you can add event modifiers like
preventDefault.
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<script>
let key;
let keyCode;
function handleKeydown(event) {key = event.key;
keyCode = event.keyCode;
}
</script>
<svelte:window />
<div style="text-align: center">
{#if key} <kbd>{key === ' ' ? 'Space' : key}</kbd> <p>{keyCode}</p> {:else}<p>Focus this window and press any key</p>
{/if}</div>
<style>
div {display: flex;
height: 100%;
align-items: center;
justify-content: center;
flex-direction: column;
}
kbd {border-radius: 4px;
font-size: 6em;
padding: 0.2em 0.5em;
background-color: #eeeeee;
border-top: 5px solid #f9f9f9;
border-left: 5px solid #f9f9f9;
border-right: 5px solid #aaaaaa;
border-bottom: 5px solid #aaaaaa;
color: #555;
}
</style>