我有一个包含数据的对象数组,我使用map输出到DOM。列表中的每个项目都有一个@click事件监听器。当您单击其中一个项目时,我希望通过添加css类来突出显示它,例如'hover'。所以基本上它应该像菜单系统一样工作。单击某个项目时,该项目将突出显示,而其他项目不应突出显示,反之亦然。
我现在设置它的方式,列表中的所有项目都会突出显示,这不是我想要做的逻辑。我使用了console.log来显示已单击的项目。但是,我仍然没有弄明白,如何制作所选项目,突出显示而不是整个列表?
<template>
<div>
<div>
<h1>Dragonball</h1>
</div>
<div>
<ul>
<li v-for="(dragonBallFighters, index) of dragonBallFighter" @click="toggleClass(dragonBallFighters.id)" :key=dragonBallFighters.id :class="{hover: active}">
<div class="dragonball-container">
<div class="dragonball-stats">
<h1>{{index}}, {{dragonBallFighters.name}}</h1>
<p>{{dragonBallFighters.race}}</p>
<p>{{dragonBallFighters.specialAttack}}</p>
</div>
<div class="dragonball-image">
<img :src="dragonBallFighters.img" :alt="dragonBallFighters.name" />
</div>
</div>
</li>
</ul>
</div>
</div>
</template>
<script>
export default {
data() {
return {
active: false,
dragonBallFighter: [
{
id: 1,
name: 'Goku',
race: 'Sayain',
specialAttack: 'Kamehameha Wave',
img:
'https://geeksnipper.com/wp-content/uploads/2018/03/Screen-Shot-2018-03-04-at-8.52.28-AM.png'
},
{
id: 2,
name: 'Vegeta',
race: 'Sayain',
specialAttack: 'Final Flash',
img:
'https://nerdreactor.com/wp-content/uploads/2018/01/vegeta-ssb.jpg'
},
{
id: 3,
name: 'Brolly',
race: 'Sayain',
specialAttack: 'Crusher Blast',
img: 'http://media.comicbook.com/2017/05/broly-995283-1280x0.png'
},
{
id: 4,
name: 'Majin Buu',
race: 'Unknown',
specialAttack: 'Absorbtion',
img: 'https://i.ytimg.com/vi/50GF26RBWjw/maxresdefault.jpg'
},
{
id: 5,
name: 'Janemba',
race: 'Unknown',
specialAttack: 'Teleportation Warp',
img:
'https://vignette.wikia.nocookie.net/villainstournament/images/f/f1/Super_janemba.png/revision/latest?cb=20140311163545'
},
{
id: 6,
name: 'Tien',
race: 'Human',
specialAttack: 'Tri Beam',
img:
'http://i1.wp.com/www.dragonball.co/wp-content/uploads/2016/08/tien_banner.png?fit=704%2C396'
},
{
id: 7,
name: 'Vegito SSJB',
race: 'Sayian',
specialAttack: 'Final kamehameha',
img:
'http://i1.wp.com/shoryuken.com/wp-content/uploads/2018/05/Vegito-Blue-SSGSS-Attack.png?fit=750%2C400&resize=750%2C400'
},
{
id: 8,
name: 'Toppo',
race: 'Unknown',
specialAttack: 'Finger Blasters',
img: 'https://i.ytimg.com/vi/_Lz9bTEL1dM/maxresdefault.jpg'
},
{
id: 9,
name: 'Dyspo',
race: 'Unknown',
specialAttack: 'Super Hyper Lightspeed Mode',
img:
'https://pre00.deviantart.net/5458/th/pre/f/2017/148/1/8/dragon_ball_super_dyspo_by_giuseppedirosso-dbaqm0s.jpg'
},
{
id: 10,
name: 'Future Trunks',
race: 'Human',
specialAttack: 'Galick Gun',
img:
'https://static5.comicvine.com/uploads/original/11129/111290855/5809735-3904647274-14886.png'
}
]
};
},
methods: {
toggleClass(id) {
console.log('Clicked ' + id);
const currentState = this.active;
this.active = !currentState;
// this.selectedItemIndex = id;
if (this.selectedItemIndex === id) {
this.active === true;
} else if (this.selectedItemIndex === !id) {
this.active === false;
}
}
}
};
</script>
<style lang="scss" scoped>
.dragonball-container {
cursor: pointer;
display: grid;
padding: 20px;
grid-template-columns: 1fr 1fr;
//background: #666;
border: 2px solid #666;
grid-gap: 20px;
margin-bottom: 20px;
border-radius: 10px;
-webkit-box-shadow: 10px 10px 5px 0px rgba(240, 240, 240, 1);
-moz-box-shadow: 10px 10px 5px 0px rgba(240, 240, 240, 1);
box-shadow: 10px 10px 5px 0px rgba(240, 240, 240, 1);
}
.dragonball-image img {
display: grid;
justify-content: center;
align-items: center;
width: 100%;
max-width: 300px;
border-radius: 100%;
}
ul li {
list-style: none;
}
.hover {
background: rgb(244, 244, 244);
border-radius: 10px;
}
</style>
答案 0 :(得分:3)
我最喜欢这样做的方法是为每个战士添加一个新密钥,并在v-for中使用该密钥。标记中唯一需要的是将:class
值更改为v-for循环中战斗机的活动键。
<li
v-for="(dragonBallFighters, index) of dragonBallFighter"
@click="toggleClass(dragonBallFighters.id)"
:key=dragonBallFighters.id
:class="{hover: dragonBallFighters.active}"
>
<div class="dragonball-container">
<div class="dragonball-stats">
<h1>{{index}}, {{dragonBallFighters.name}}</h1>
<p>{{dragonBallFighters.race}}</p>
<p>{{dragonBallFighters.specialAttack}}</p>
</div>
<div class="dragonball-image">
<img :src="dragonBallFighters.img" :alt="dragonBallFighters.name" />
</div>
</div>
</li>
然后对于Javascript,我们使用Vue.set()告诉dom我们添加了一个不在v-for知道的原始对象中的密钥。这使得vue在我们改变战斗机的活动性时正确地更新了dom。
toggleClass(id) {
// Create variable for all fighters (name takes up less space)
let allFigthers = this.dragonBallFighter;
// Get the clicked fighter
let fighter = allFigthers.find(e => e.id === id)
// Set all fighters to have a active key of false so that they "loose focus"
allFigthers = allFigthers.map(e => Vue.set(e, 'active', false))
// Use Vue.set to tell vue that we updated the object and it needs to be re-rendered
Vue.set(fighter, 'active', !fighter.active)
}
我切换活动类的方法只是执行!fighter.active
。
这将转换为not {boolean}
〜如果fighter.active是true
那么not true
将等同于假。如果为假,not false
将等于真
顺便说一句;我建议你将战士的对象重命名为dragonBallFighters
。这样,v-for更有意义== <v-for="fighter in dragonBallFighters"
可以将其转换为
对于dragonBallFighters对象中的每个战斗机。
现在,你间接地说
女巫不会在舌头上漂浮;)对于dragonBallFighter对象中的每个dragonBallFighters
答案 1 :(得分:0)
Put&#34; active&#34;作为每个龙球战斗机的财产,如果它被点击并将其余部分关闭,则将其打开。
Vue的概念是使用数据并让Vue处理UI:)
OR
重命名&#34;活跃&#34;到activeID并将点击的项目的ID设置为activeID,然后仅在activeID == item.id
时应用悬停