vue实现左右点击滚动效果
本文实例为大家分享了vue实现左右点击滚动,效果如图
涉及功能点
1、在created中使用r e f s 结 合 refs结合refs结合nextTick仍然无法获取到元素的问题:添加定时器
2、左右按钮是否可点击根据数据以及当前分辨率可放下的个数确认
3、可适应不同分辨率下的情况
代码
<!-- --> <template> <div> <div class="ProgressBoxTool" v-if="progressList && progressList.length"> <div class="processBox"> <div :class="currentClickNumber > 0 ? 'arrow' : 'arrow arrowOpacity'" @click="fnPrev()"> <img :src="arrowL" alt="" /> </div> <div class="fixedBox" :ref="`fixedBox`"> <div class="centerScroll" :style=" `width:${signleWidth * progressList.length}px;transform:translate(${scrollResultWidth}px,0);transition:1s;` " > <div class="signleTab" v-for="(itemP, indexP) in progressList" :key="indexP + 'progress'" > <div class="leftIcon"> <img class="pregressIcon" :src="icon" alt="" /> </div> <!-- 最后一个不展示箭头 --> <img v-if="progressList.length > indexP + 1" :src="iconArrow" alt="" class="arrowSquare" /> </div> </div> </div> <div :class="noScrollRight ? 'arrow' : 'arrow arrowOpacity'" @click="fnNext(activeName)"> <img :src="arrowR" alt="" /> </div> </div> </div> </div> </template> <script> import arrowL from '@/assets/images/emergency/arrowL.png'; import arrowR from '@/assets/images/emergency/arrowR.png'; import icon from '@/assets/images/emergency/icon.png'; import iconArrow from '@/assets/images/emergency/iconArrow.png'; export default { components: {}, data() { return { progressList: [ { type: '1' }, { type: '2' }, { type: '1' }, { type: '2' }, { type: '1' }, { type: '2' }, { type: '1' }, { type: '2' }, { type: '1' }, { type: '2' } ], arrowL, arrowR, icon, iconArrow, currentProgressId: '', scrollResultWidth: 0, //transform滚动的距离 signleWidth: 215, //单个流程的宽度 activeName: 0, currentClickNumber: 0, noScrollRight: true }; }, created() { this.$nextTick(() => { setTimeout(() => { this.initgoRightArrow(); }); }); }, methods: { //初始化判断是否可以向右滚动 initgoRightArrow() { const currentScrollWidth = this.$refs[`fixedBox`].clientWidth; const canNumber = Math.floor(currentScrollWidth / this.signleWidth); //可以放下的个数 //如果最后一个流程图标已经展示出来,则停止滚动 if (this.currentClickNumber + canNumber >= this.progressList.length) { this.noScrollRight = false; return; } }, //点击上一个 fnPrev() { //如果右点击的次数大于0,才可以左滚 if (this.currentClickNumber > 0) { this.currentClickNumber -= 1; this.noScrollRight = true; this.fnScrollWidth('reduce'); } else { return false; } }, //点击下一个 fnNext() { const currentScrollWidth = this.$refs[`fixedBox`].clientWidth; const canNumber = Math.floor(currentScrollWidth / this.signleWidth); //可以放下的个数 //如果最后一个流程图标已经展示出来,则停止滚动 if (this.currentClickNumber + canNumber >= this.progressList.length) { return; } //说明放不下有滚动条 if (this.progressList.length > canNumber) { this.currentClickNumber += 1; if (this.currentClickNumber + canNumber >= this.progressList.length) { this.noScrollRight = false; } this.fnScrollWidth('add'); } }, //translate的宽度 fnScrollWidth(type) { let result = 0; if (type === 'reduce') { result = 215; } else if (type === 'add') { result = -215; } else { result = 0; } this.scrollResultWidth += result; }, } }; </script> <style lang="scss" scoped> //中间的时间发展部分 .processBox { display: flex; align-items: center; justify-content: space-between; .arrow { width: 60px; cursor: pointer; } .arrowOpacity { cursor: default; opacity: 0.4; } .fixedBox { flex: 1; overflow: hidden; } .centerScroll { // flex: 1; box-sizing: border-box; padding: 20px 0; white-space: nowrap; // width: calc(100% - 120px); // overflow-x: auto; .signleTab { width: 215px; position: relative; display: inline-block; .leftIcon { width: 150px; text-align: center; cursor: pointer; & > .pregressIcon { width: 60px; height: 60px; } } & > .arrowSquare { position: absolute; top: 25px; right: 0; } } } } </style>
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