javascript - 排序计算值和更新计算值vue
问题描述
在我的 vue 应用程序中,我从我的 API 中获取了一些 JSON,然后我计算返回的数据并通过它的一个属性对其进行排序,然后我想在客户端每次更新该属性时都使用它,我想将 `v-model="tag.weight" 添加到输入中就足够了,但显然不是?我做错了什么?
<div class="mt-6" v-if="this.sortedTags">
<div class="w-full flex justify-between pb-2 border-white">
<div class="w-1/3 p-4 font-black">Tag</div>
<div class="p-4 font-black">Active</div>
<div class="p-4 font-black">Weight</div>
</div>
<div class="w-full flex justify-between" v-for="tag in this.sortedTags" :key="tag.id">
<div class="w-1/3 p-4">{{ tag.tag }}</div>
<div class="p-4"><input type="checkbox" /></div>
<div class="p-4"><input type="text" v-model="tag.weight" size="3" class="text-black"/></div>
</div>
</div>
computed: {
...mapState(['admin']),
sortedTags() {
return this.admin.tags.sort(function(a, b) {
a.weight - b.weight;
});
}
}
我希望的是 1)如果在绑定的权重字段中输入一个数字,tag.weight
它将根据该输入对其进行排序,以及 2)当我向数据添加新对象时,它会使用它。
解决方案
省略 时我得到了类似的结果return
,它会给你响应,但重新排序将不起作用。因此,只需使用return a.weight - b.weight;
而不是简单的a.weight - b.weight;
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