当复选框不在组件中时,我使用bind:group作为复选框。现在,当我尝试使用带有组件标签的复选框时,它不起作用。
CheckboxWithLabel.svelte(组件)
<script>
export let label="";
export let bindGroup="";
export let value="";
</script>
<label class="container">{label}
<input type="checkbox" bind:group={bindGroup} value={value} />
<span class="checkmark"></span>
</label>
SettingsSession.svelte(页面)
import CheckboxWithLabel from '@/components/ui/CheckboxWithLabel';
let sessionLengths = [5, 15];
$: console.log('duration', sessionLengths);
...
<div class="form-group">
<h5>Select live session durations</h5>
<CheckboxWithLabel label='5 minutes' bindGroup={sessionLengths} value="5"/>
<CheckboxWithLabel label='15 minutes' bindGroup={sessionLengths} value="15"/>
<CheckboxWithLabel label='30 minutes' bindGroup={sessionLengths} value="30"/>
<CheckboxWithLabel label='45 minutes' bindGroup={sessionLengths} value="45"/>
<CheckboxWithLabel label='60 minutes' bindGroup={sessionLengths} value="60"/>
<CheckboxWithLabel label='90 minutes' bindGroup={sessionLengths} value="90"/>
<CheckboxWithLabel label='120 minutes' bindGroup={sessionLengths} value="120"/>
</div>
...
一个在没有组件的情况下工作bind:group的简短示例。
<script>
let goodDogs = []
let dogs = ['Roger', 'Syd']
</script>
<h2>
Who's a good dog?
</h2>
<ul>
{#each dogs as dog}
<li>{dog} <input type=checkbox bind:group={goodDogs} value={dog}></li>
{/each}
</ul>
<h2>
Good dogs according to me:
</h2>
<ul>
{#each goodDogs as dog}
<li>{dog}</li>
{/each}
</ul>
来源:https://www.freecodecamp.org/news/the-svelte-handbook/#svelte-lifecycle-events
似乎是CheckboxWithLabel.svelte (component)
为什么不起作用的问题,是将bindgroup初始化为字符串而不是数组:
<script>
export let label="Herbert";
export let bindGroup=[]
export let value="Herbert";
export let value2="Robert"
export let label2="Robert"
</script>
我在这里用您的代码创建了一个REPL,用于检查和测试。
编辑:我刚刚检查了您的REPL。您没有将群组绑定在那里。我更新了it。它看起来应该像这样:
<Checkbox label="Herbert" bind:bindGroup={selectedNames} value="Herbert"/>
<Checkbox label="Robert" bind:bindGroup={selectedNames} value="Robert"/>
<Checkbox label="Mike" bind:bindGroup={selectedNames} value="Mike"/>