左滑删除,很多UI框架里有,比如Mint-UI, Muse-UI等,一开始我们就是用的这两个,但是我们需求是要:左滑的时候出现img然后来实现点击删除,如下:
因为用UI框架,还得改底层代码= =所以,我们小组就直接写了一个- -,心累……此组件多地方使用,所以建议还是放到common下。。
<template> <div> <div @touchstart="_touchStart" @touchmove="_touchMove" @touchend="_touchEnd" :style="txtStyle"> <slot></slot> </div> <div :style="zIndex" @click.prevent="deleteItem(index)"></div> </div> </template> <script> export default { props: { index: Number }, data() { return { startX: 0, //触摸位置 moveX: 0, //滑动时的位置 disX: 0, //移动距离 txtStyle: '', delWidth: 200, top: '', zIndex: 'z-index:-1', } }, methods: { _touchStart: function(ev) { ev = ev || event; if(ev.touches.length == 1){ // 手指按下的时候记录按下的位置 this.startX = ev.touches[0].clientX; console.log(this.startX) } }, _touchMove: function(ev) { ev = ev || event; if(ev.touches.length == 1) { // 滑动过程中的实时位置 this.moveX = ev.touches[0].clientX // 滑动过程中实时计算滑动距离 this.disX = this.startX - this.moveX; // console.log('disX==>',this.disX) // 如果是向右滑动或者只是点击,不改变滑动位置 if(this.disX < 0 || this.disX == 0) { // console.log('没有移动'); this.txtStyle = "transform:translateX(0rem)"; }else if (this.disX > 0) { 如果是向左滑动,则实时给这个根元素一个向左的偏移-left,当偏移量到达固定值delWidth时,固定元素的偏移量为 delWidth this.txtStyle = "transform:translateX(-" + this.disX/100 + "rem)"; if (this.disX >= this.delWidth/100) { this.txtStyle = "transform:translateX(-" + this.delWidth/100 + "rem)"; this.zIndex = "z-index:" + 10 + "rem"; } } } }, _touchEnd: function(ev) { if (event.changedTouches.length == 1) { this.startX = 0; this.zIndex = "z-index:" + -1 + "rem"; console.log(event.changedTouches[0].clientX) // 手指移动结束后的水平位置 let endX = event.changedTouches[0].clientX; // 触摸开始与结束,手指移动的距离 this.disX = this.startX - endX; //如果距离小于删除按钮的1/2,不显示删除按钮 } }, deleteItem: function(index) { this.$emit('deleteItem', index); } } } </script> <style> .left-delete{ width:100%; height:100%; position:relative; z-index:2; } .move{ position: relative; } .deleteIcon{ width: 2rem; height:100%; position: absolute; right:0; top:0; background:url(./../../assets/main/4.png) no-repeat; background-size: contain; } </style>
然后哪个页面需要,哪个页面引入就好。比如myCollect页面需要,那么如下:
<template> <section> <section> <div v-for="(item,index) in collectionList"> <left-slider :index="index" @deleteItem="deleteItem"> <Financial :item="item" :index="index"></Financial> </left-slider> </div> </section> </section> </template> <script> import api from './../../fetch/api'; import { mapGetters } from 'vuex'; import Financial from './../common/financial.vue'; import LeftSlider from './../common/leftSlider.vue'; export default { name: 'MyCollect', props: { item: Object, index: Number }, components: { Financial, LeftSlider }, data() { return { } }, created() { this.getCollectionList(); }, methods: { }, computed: { ...mapGetters([ 'getContextPathSrc', 'sessionId', 'token' ]), }, methods: { // 删除 deleteItem: function(index) { api.commonApi('后台接口,请求数据')//此处api是封装的axios,详情看文章:vue2+vuex+axios即可 .then(res => { console.debug("REQ_ADD_STORE.res.data.result -> " + res.data.result); this.collectionList.splice(index, 1); }); } }, mounted() { } } </script>
然后就完成了。