Bindings / Numeric inputs • Svelte Tutorial

Bases de Svelte Bindings Numeric inputs

In the DOM, every input value is a string. That’s unhelpful when you’re dealing with numeric inputs — type="number" and type="range" — as it means you have to remember to coerce input.value before using it.

With bind:value, Svelte takes care of it for you:

App

<label>
	<input type="number" bind:value={a} min="0" max="10" />
	<input type="range" bind:value={a} min="0" max="10" />
</label>

<label>
	<input type="number" bind:value={b} min="0" max="10" />
	<input type="range" bind:value={b} min="0" max="10" />
</label>

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Text inputs Checkbox inputs

<script>

	let a = $state(1);

	let b = $state(2);

</script>

<label>

	<input type="number" value={a} min="0" max="10" />

	<input type="range" value={a} min="0" max="10" />

</label>

<label>

	<input type="number" value={b} min="0" max="10" />

	<input type="range" value={b} min="0" max="10" />

</label>

<p>{a} + {b} = {a + b}</p>

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