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"); }});

2018-03-08

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

总结

以上所述是小编给大家介绍的vue自定义移动端touch事件之点击、滑动、长按事件，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！