vue自定义tap指令及tap事件的实现

Vue.directive('tap',{
 bind(el, binding, vNode){
 let expression = binding.value;
 let handler = expression.name;
 let args = expression.args

 on(el, 'touchstart', (e)=>{
  
  let startX = e.changedTouches[0].clientX;
  let startY = e.changedTouches[0].clientY;

  once(el, 'touchend',(ev)=>{

  let disX = Math.abs(ev.changedTouches[0].clientX-startX);
  let disY = Math.abs(ev.changedTouches[0].clientY-startY);

  if(disX == 0 && disY ==0){
   handler(args);
  }
  })
 })
 }
})

/*!
 * vue-tap.js
 * by weijianhua https://github.com/weijhfly/vue-tap
*/
;(function (factory) {
 if (typeof define === 'function' && define.amd) {
 define(function(){return factory;});
 }else if (typeof exports == "object") {
 module.exports = factory;
 }else{
 Vue.use(factory);
 }
}({
 master:{
 bind: function (el, binding) {
 var isTouch = "ontouchend" in document;
 el.exec = function (e) {
 var data = binding.value;
 data[0].apply(this, data.slice(1));
 };
 if (isTouch) {
 //touchstart
 el.addEventListener('touchstart', function (e) {
 binding.modifiers.stop && (e.stopPropagation());
 var t = e.touches[0];
 el.startX = t.clientX;
 el.startY = t.clientY;
 el.sTime = + new Date;
 });
 //touchend
 el.addEventListener('touchend', function (e) {
 binding.modifiers.stop && (e.stopPropagation());
 var t = e.changedTouches[0];
 el.endX = t.clientX;
 el.endY = t.clientY;
 if((+ new Date)-el.sTime<300){
 if(Math.abs(el.endX-el.startX)+Math.abs(el.endY-el.startY)<20){
 e.preventDefault();
 el.exec();
 }
 }
 });
 }else {
 //click
 el.addEventListener('click', function (e) {
 binding.modifiers.stop && (e.stopPropagation());
 el.exec();
 });
 }
 },
 componentUpdated : function(el,binding) {
 el.exec = function () {
 var data = binding.value;
 data[0].apply(this, data.slice(1));
 };
 },
 unbind: function (el) {
 el.exec = null;
 }
 },
 install:function(){
 Vue.directive('tap', this.master);
 }
}))

 
 
 
 



 
 vue-tap.js
 
 简洁的调用方式：
 v-tap="[方法，参数一，参数二...]"
 
 获取参数：
 methods:{
 tap:function(参数一，参数二...){
 console.log(参数一，参数二...);
 }
 }
 
 阻止冒泡：
 v-tap.stop
 
 

 

 
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