轮播(css+js)

目录

1.实现效果

2.基础代码演示

2.1js代码

2.1css样式

2.3实现效果

3.实现点击切换

3.1给button添加点击事件

3.2效果图如下

3.3发现问题

3.3.1不循环

3.3.2循环

---

1.实现效果

2.基础代码演示

2.1js代码

 <div class="out-box"><div class="test-swiper"><div class="swiper-box"><div class="swiper-item" v-for="(item,index) in 7" :key="index"><img src="" alt=""><p>学习+积累</p></div></div></div><button class="button-one one">上一张</button><button class="button-one two">下一张</button></div>

2.1css样式

.out-box{position: relative;width: 100%;.test-swiper{background-color: #d3d8e2;width: 1200px;margin:0 auto;height: 500px;position: relative;overflow: hidden;.swiper-box{position: absolute;display: flex;.swiper-item{width: 400px;height: 400px;background-color: #B7CBEA;margin:50px 100px;}}}.button-one{background-color: rgb(174, 165, 166);position: absolute;top: 50%;width: 50px;height: 50px;border-radius: 100%;}.one{left: 430px;}.two{right:430px;}
}

2.3实现效果

3.实现点击切换

3.1给button添加事件,transform和切换效果

<div class="out-box"><div class="test-swiper"><div class="swiper-box" :style="{transform:`translateX(${translateXtest}px)`,transition: 'transform 0.5s ease-in-out' }"><div class="swiper-item" v-for="(item,index) in testList" :key="index"><img src="" alt=""><p>学习+积累</p></div></div></div><button class="button-one one" @click="onPre">上一张</button><button class="button-one two" @click="onNext">下一张</button>
</div>export defatult{data(){return{ testList:[{},{},{},{}]testIndex:0}}
}computed: {translateXtest(){// 计算需要移动的距离return -this.testIndex * (400 + 200);},
}onPre(){if(this.testIndex>0){ this.testIndex--}
},
onNext(){if(this.testIndex<this.testList.length-1){ this.testIndex++}
}

3.2效果图如下

3.3发现问题

发现数组长度只有3,当触发最后一次onNext操作时候,出现空白,如何解决

3.3.1不循环

一次显示2张图片,添加条件testIndex<testList.length-2

onNext(){

      if(this.testIndex<this.testList.length-2){this.testIndex++}

    }

3.3.2循环

可以当到最后显示testList最后一个数据时,让数组拼接

onNext(){this.testIndex++if(this.testIndex>this.testList.length){this.testList=this.testList.concat(this.testList)}
}

4.完整代码

<div class="out-box"><div class="test-swiper"><div class="swiper-box" :style="{ transform:`translateX(${translateXtest}px)`,transition: 'transform 0.5s ease-in-out' }"><div class="swiper-item" v-for="(item,index) in testList" :key="index"><img src="" alt=""><p>学习+积累{{ index }}</p></div></div></div><button class="button-one one" @click="onPrev">上一张</button><button class="button-one two" @click="onNext">下一张</button>
</div>export defatult{data(){return{ testList:[{},{},{},{}]testIndex:0}}
}computed: {translateXtest(){// 计算需要移动的距离return -this.testIndex * (400 + 200);},
}onPre(){if(this.testIndex>0){ this.testIndex--}
},
onNext(){if(this.testIndex<this.testList.length-2){this.testIndex++}
}.out-box{position: relative;width: 100%;.test-swiper{background-color: #d3d8e2;width: 1200px;margin:0 auto;height: 500px;position: relative;overflow: hidden;.swiper-box{position: absolute;display: flex;.swiper-item{width: 400px;height: 400px;background-color: #B7CBEA;margin:50px 100px;}}}.button-one{background-color: rgb(174, 165, 166);position: absolute;top: 50%;width: 50px;height: 50px;border-radius: 100%;}.one{left: 430px;}.two{right:430px;}
}

如果有好的循环方式,欢迎留言