Vue 中使用touchstart ，touchmove，touchend事件

太过爱你忘了你带给我的痛 2023-06-15 13:27 101阅读 0赞

<template>
        <div id="SlideBar" class="box">
            <div class="item" ref="slide" :style="slideStyle" @touchstart="start($event)" @touchmove="move($event)" @touchend="end($event)">
              <img src="../../../static/lun.1.jpg" alt="">
              <div class="right">
                
              </div>
            </div>
            <div class="btn" ref="btn">
                <button>编辑</button>
                <button style="background:#387ef5;color:#fff">收藏</button>
            </div>
        </div>
    </template>
    <script>
        export default { 
            name: 'SlideBar',
            props: { 
    
            },
            data (){ 
                return { 
                    flag: false,
                    startX: 0,
                    endX: 0,
                    slideStyle: { 
                        left: 0,
                        transition: 'none'
                    }
                }
            },
            methods: { 
                start (e){   //记录开始滑动屏幕的X轴的位置
                    this.flag = true;
                    this.startX = e.touches[0].clientX;
                    this.endX = this.$refs.slide.offsetLeft;
                    this.slideStyle.transition = 'none';
                },
                move (e){ 
                    if(this.flag){ 
                        // 处理鼠标移动的逻辑
                        var moveX = this.endX + (e.touches[0].clientX - this.startX);  //计算滑动的距离
                        if(Math.abs(moveX) >= this.$refs.btn.offsetWidth && moveX < 0){   //判断滑动的距离是否大于class:btn的宽度
                            moveX = (Math.abs(moveX) - this.$refs.btn.offsetWidth) * 0.1; // 0.3阻力系数
                            this.slideStyle.left = - this.$refs.btn.offsetWidth - moveX + 'px';
                        }else if(moveX >= 0){   //滑动距离是否大于等于0
                            this.slideStyle.left = 0 + 'px';  //大于等于0让class:item等于0
                        }else{ 
                            this.slideStyle.left = moveX + 'px';  //小于0让class:item等于滑动的距离
                        }
                    }
                },
                end (e){ 
                    if(this.flag){ 
                        this.flag = false;
                        // endX = slide.offsetLeft;
                        var moveX = e.changedTouches[0].clientX - this.startX;  //计算滑动的距离
                        this.slideStyle.transition = 'left .3s';
                        var btnWidth = this.$refs.btn.offsetWidth;  //class:btn的宽度
                        if(moveX < 0){ 
                            if(Math.abs(moveX) >= btnWidth / 2 || Math.abs(this.$refs.slide.offsetLeft) >= this.$refs.btn.offsetWidth){  //是否大于class:btn宽度的一半
                                this.slideStyle.left = - btnWidth + 'px';  //左滑超过class:btn宽度的一半就滑回去
                            }else if(Math.abs(moveX) < btnWidth / 2){   //小于class:btn宽度的一半
                                this.slideStyle.left = 0 + 'px';  //左滑没有超过class:btn宽度的一半回原位
                            }
                        }else if(moveX > 0 && this.endX != 0){ 
                            if(Math.abs(moveX) >= btnWidth / 2){ 
                                this.slideStyle.left = 0 + 'px';  //右滑超过class:btn宽度的一半就滑回去
                            }else if(Math.abs(moveX) < btnWidth / 2){ 
                                this.slideStyle.left = - btnWidth + 'px';  //右滑没有超过class:btn宽度的一半回原位
                            }
                        }
                    }
                }
            },
            mounted (){ 
                var _this = this;
                // 使用js的现代事件监听transition过渡结束
                this.$refs.slide.addEventListener('transitionend',function(){ 
                    _this.endX = this.offsetLeft;
                })
            }
        }
    </script>
    <style>
    .box{ 
        position:relative;
        border-bottom:0.026667rem solid #666666;
    }
    .btn{ 
      height:100%;
      position:absolute;
      right:0;
      top:0;
      background:red;
      display:flex;
    }
    button{ 
      width:1.6rem;
      height:100%;
      background:#f8f8f8;
      border:none;
    }
    .item{ 
      padding:0.266667rem;
      display:flex;
      position:relative;
      background:#fff;
      z-index: 2;
      box-shadow: 0.026667rem 0 0.053333rem #ddd;
    }
    .item img{ 
      width:2.133333rem;
      height:2.133333rem;
      margin-right:0.4rem;
      border-radius: 0.133333rem;
    }
    
    .item .title{ 
      font-size:0.48rem;
      float: left;
    }
    .item .text{ 
      font-size:0.426667rem;
      color:#888;
      float: left;
      margin: 0 1.33rem;
    }
    .item .price{ 
      color:#888;
      float: left;
      margin: 0 1.33rem;
    }
    </style>

效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191122171728969.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191122171742455.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ1MDQzMTA1,size_16,color_FFFFFF,t_70