mirror of https://github.com/sveltejs/svelte
45 lines
910 B
45 lines
910 B
<svelte:options immutable/>
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<script>
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import ImmutableTodo from './ImmutableTodo.svelte';
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import MutableTodo from './MutableTodo.svelte';
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let todos = [
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{ id: 1, done: true, text: 'wash the car' },
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{ id: 2, done: false, text: 'take the dog for a walk' },
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{ id: 3, done: false, text: 'mow the lawn' }
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];
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function toggle(id) {
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todos = todos.map(todo => {
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if (todo.id === id) {
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// return a new object
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return {
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id,
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done: !todo.done,
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text: todo.text
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};
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}
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// return the same object
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return todo;
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});
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}
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</script>
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<h2>Immutable</h2>
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{#each todos as todo}
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<label on:click="{() => toggle(todo.id)}">
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<span>{todo.done ? "😎": "☹️"}</span>
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<ImmutableTodo {todo}/>
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</label>
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{/each}
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<h2>Mutable</h2>
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{#each todos as todo}
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<label on:click="{() => toggle(todo.id)}">
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<span>{todo.done ? "😎": "☹️"}</span>
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<MutableTodo {todo}/>
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</label>
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{/each}
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