用法：

**html**
<div id="app" class="box" 
    v-tap="vuetouch" //vuetouch为函数名，如没有参数，可直接写函数名
    v-longtap="{fn:vuetouch,name:'长按'}" //如果有参数以对象形式传，fn 为函数名
    v-swipeleft="{fn:vuetouch,name:'左滑'}"
    v-swiperight="{fn:vuetouch,name:'右滑'}"
    v-swipeup="{fn:vuetouch,name:'上滑'}"
    v-swipedown="{fn:vuetouch,name:'下滑'}"
>{{ name }}</div>

**js**
kim=new Vue({
    el:"#app",
    data:{
        name:"开始"
    },
    methods:{
        vuetouch:function(s,e){
            this.name=s.name;
        }
    }
});

js核心内容

function vueTouch(el,binding,type){
    var _this=this;
    this.obj=el;
    this.binding=binding;
    this.touchType=type;
    this.vueTouches={x:0,y:0};
    this.vueMoves=true;
    this.vueLeave=true;
    this.longTouch=true;
    this.vueCallBack=typeof(binding.value)=="object"?binding.value.fn:binding.value;
    this.obj.addEventListener("touchstart",function(e){
        _this.start(e);
    },false);
    this.obj.addEventListener("touchend",function(e){
        _this.end(e);
    },false);
    this.obj.addEventListener("touchmove",function(e){
        _this.move(e);
    },false);
};
vueTouch.prototype={
    start:function(e){
        this.vueMoves=true;
        this.vueLeave=true;
        this.longTouch=true;
        this.vueTouches={x:e.changedTouches[0].pageX,y:e.changedTouches[0].pageY};
        this.time=setTimeout(function(){
            if(this.vueLeave&&this.vueMoves){
                this.touchType=="longtap"&&this.vueCallBack(this.binding.value,e);
                this.longTouch=false;
            };
        }.bind(this),1000);
    },
    end:function(e){
        var disX=e.changedTouches[0].pageX-this.vueTouches.x;
        var disY=e.changedTouches[0].pageY-this.vueTouches.y;
        clearTimeout(this.time);
        if(Math.abs(disX)>10||Math.abs(disY)>100){
            this.touchType=="swipe"&&this.vueCallBack(this.binding.value,e);
            if(Math.abs(disX)>Math.abs(disY)){
                if(disX>10){
                    this.touchType=="swiperight"&&this.vueCallBack(this.binding.value,e);
                };
                if(disX<-10){
                    this.touchType=="swipeleft"&&this.vueCallBack(this.binding.value,e);
                };
            }else{
                if(disY>10){
                    this.touchType=="swipedown"&&this.vueCallBack(this.binding.value,e);
                };
                if(disY<-10){
                    this.touchType=="swipeup"&&this.vueCallBack(this.binding.value,e);
                };  
            };
        }else{
            if(this.longTouch&&this.vueMoves){
                this.touchType=="tap"&&this.vueCallBack(this.binding.value,e);
                this.vueLeave=false
            };
        };
    },
    move:function(e){
        this.vueMoves=false;
    }
};
Vue.directive("tap",{
    bind:function(el,binding){
        new vueTouch(el,binding,"tap");
    }
});
Vue.directive("swipe",{
    bind:function(el,binding){
        new vueTouch(el,binding,"swipe");
    }
});
Vue.directive("swipeleft",{
    bind:function(el,binding){
        new vueTouch(el,binding,"swipeleft");
    }
});
Vue.directive("swiperight",{
    bind:function(el,binding){
        new vueTouch(el,binding,"swiperight");
    }
});
Vue.directive("swipedown",{
    bind:function(el,binding){
        new vueTouch(el,binding,"swipedown");
    }
});
Vue.directive("swipeup",{
    bind:function(el,binding){
        new vueTouch(el,binding,"swipeup");
    }
});
Vue.directive("longtap",{
    bind:function(el,binding){
        new vueTouch(el,binding,"longtap");
    }
});

有朋友提出一个bug :“v-for循环 生命周期后 获取不到新值 比如更新了数据”

这个问题是v-for的就地复用机制导致的，也就是可以复用的dom没有重复渲染，官方给出的方法是需要为每项提供一个唯一 key 属性。理想的 key 值是每项都有的且唯一的 id。

<div v-for="item in items" :key="item.id">
  <!-- 内容 -->
</div>

我的解决方案是directive的钩子函数参数有一个vnode，这个是虚拟dom节点，给vnode.key赋予一个随机id，强制dom刷新。

Vue.directive("tap",{
    bind:function(el,binding,vnode){
        vnode.key = randomString()//randomString会返回一个随机字符串
        new vueTouch(el,binding,"tap");
    }
});

最新的版本已经在GitHub更新 https://github.com/904790204/vue-touch
原文来源：https://blog.csdn.net/qq_17757973/article/details/78112976?locationNum=7&fps=1

链接: https://fly63.com/article/detial/692