這是 Jsfiddle：https ://jsfiddle.net/zxo35mts/1/
本質上，我試圖讓按鈕在單擊時隱藏所有未完成的任務，并在再次單擊時再次顯示它們，但我不知道該怎么做
<div id="root">
<h1>
All Tasks
</h1>
<ul>
<li v-for="task in tasks" v-text="task.description"></li>
</ul>
<button @click="hideIncompleteTasks">show only completed</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script>
new Vue({
el: "#root",
data: {
tasks: [
{ description: "go to the store", completed: true },
{ description: "finish screencast", completed: false },
{ description: "make donation", completed: false },
{ description: "clear inbox", completed: false },
{ description: "make dinner ", completed: false },
{ description: "clean room", completed: true },
]
},
methods: {
hideIncompleteTasks() {
if (!this.tasks.completed) {
}
}
},
})
</script>
uj5u.com熱心網友回復：
添加另一個showCompleted可以通過按鈕單擊事件更新的屬性，然后添加另一個shownTasks基于第一個屬性呼叫的計算屬性：
new Vue({
el: "#root",
data: {
tasks: [
{ description: "go to the store", completed: true },
{ description: "finish screencast", completed: false },
{ description: "make donation", completed: false },
{ description: "clear inbox", completed: false },
{ description: "make dinner ", completed: false },
{ description: "clean room", completed: true },
],
showCompleted:false
},
computed:{
shownTasks(){ return this.showCompleted?this.tasks.filter(task=>task.completed):this.tasks;}
},
methods: {
hideIncompleteTasks() {
this.showCompleted=!this.showCompleted
}
},
})
然后渲染shownTasks類似：
<ul>
<li v-for="task in shownTasks" v-text="task.description"></li>
</ul>
<button @click="hideIncompleteTasks">show only completed</button>
uj5u.com熱心網友回復：
單程：
new Vue({
el: "#root",
data: {
tasks: [
{ description: "go to the store", completed: true },
{ description: "finish screencast", completed: false },
{ description: "make donation", completed: false },
{ description: "clear inbox", completed: false },
{ description: "make dinner ", completed: false },
{ description: "clean room", completed: true },
],
onlyCompleted: false
},
methods: {
hideIncompleteTasks() {
this.onlyCompleted = !this.onlyCompleted
}
},
}).hiden {
display: none;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="root">
<h1>
All Tasks
</h1>
<ul>
<li v-for="task in tasks" v-text="task.description" :class="onlyCompleted && !task.completed && 'hiden' "></li>
</ul>
<button @click="hideIncompleteTasks">show only completed</button>
</div>轉載請註明出處，本文鏈接：https://www.uj5u.com/net/352429.html
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