自定义vue指令,滑动

将下面js 放在main.js引入
import touch from '@/assets/js/touch'//触屏滑动
Vue.use(touch);

使用
<div v-swiperight="swiperight">
...
</div>

swiperight为methods里的方法,不能传参,传参会报错

export default {
    install(Vue){
        function vueTouch(el,binding,type){//触屏函数
            var _this=this;
            _this.obj=el;
            _this.binding=binding;
            _this.touchType=type;
            _this.vueTouches={x:0,y:0};//触屏坐标
            _this.vueMoves=true;
            _this.vueLeave=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){//监听touchstart事件
                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){//监听touchend事件
                var disX=e.changedTouches[0].pageX-this.vueTouches.x;//计算移动的位移差
                var disY=e.changedTouches[0].pageY-this.vueTouches.y;
                clearTimeout(this.time);
                if(Math.abs(disX)>10||Math.abs(disY)>100){//当横向位移大于10，纵向位移大于100，则判定为滑动事件
                    this.touchType=="swipe"&&this.vueCallBack(this.binding.value,e);//若为滑动事件则返回
                    if(Math.abs(disX)>Math.abs(disY)){//判断是横向滑动还是纵向滑动
                        if(disX>10){
                            this.touchType=="swiperight"&&this.vueCallBack(this.binding.value,e);//右滑
                        };
                        if(disX<-10){
                            this.touchType=="swipeleft"&&this.vueCallBack(this.binding.value,e);//左滑
                        };
                    }else{
                        if(disY>10){
                            this.touchType=="swipedown"&&this.vueCallBack(this.binding.value,e);//下滑
                        };
                        if(disY<-10){
                            this.touchType=="swipeup"&&this.vueCallBack(this.binding.value,e);//上滑
                        };  
                    };
                }else{
                    if(this.longTouch&&this.vueMoves){
                        this.touchType=="tap"&&this.vueCallBack(this.binding.value,e);
                        this.vueLeave=false
                    };
                };
            },
            move:function(e){//监听touchmove事件
                this.vueMoves=false;
            }
        };
        Vue.directive("tap",{//点击事件
            bind:function(el,binding){
                new vueTouch(el,binding,"tap");
            }
        });
        Vue.directive("swipe",{//滑动事件
            bind:function(el,binding){
                new vueTouch(el,binding,"swipe");
            }
        });
        Vue.directive("swipeleft",{//左滑事件
            bind:function(el,binding){
                new vueTouch(el,binding,"swipeleft");
            }
        });
        Vue.directive("swiperight",{//右滑事件
            bind:function(el,binding){
                new vueTouch(el,binding,"swiperight");
            }
        });
        Vue.directive("swipedown",{//下滑事件
            bind:function(el,binding){
                new vueTouch(el,binding,"swipedown");
            }
        });
        Vue.directive("swipeup",{//上滑事件
            bind:function(el,binding){
                new vueTouch(el,binding,"swipeup");
            }
        });
        Vue.directive("longtap",{//长按事件
            bind:function(el,binding){
                new vueTouch(el,binding,"longtap");
            }
        });
    }
}