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svelte/documentation/tutorial/06-bindings/13-component-bindings/app-a/Keypad.svelte

41 lines
996 B

<script>
import { createEventDispatcher } from 'svelte';
export let value = '';
const dispatch = createEventDispatcher();
const select = (num) => () => (value += num);
const clear = () => (value = '');
const submit = () => dispatch('submit');
</script>
<div class="keypad">
<button on:click={select(1)}>1</button>
<button on:click={select(2)}>2</button>
<button on:click={select(3)}>3</button>
<button on:click={select(4)}>4</button>
<button on:click={select(5)}>5</button>
<button on:click={select(6)}>6</button>
<button on:click={select(7)}>7</button>
<button on:click={select(8)}>8</button>
<button on:click={select(9)}>9</button>
<button disabled={!value} on:click={clear}>clear</button>
<button on:click={select(0)}>0</button>
<button disabled={!value} on:click={submit}>submit</button>
</div>
<style>
.keypad {
display: grid;
grid-template-columns: repeat(3, 5em);
grid-template-rows: repeat(4, 3em);
grid-gap: 0.5em;
}
button {
margin: 0;
}
</style>