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element.addeventlistener( ‘touchstart‘, function( e ){ var touches = e.touches[0]; starttx = touches.clientx; startty = touches.clienty; }, false ); element.addeventlistener( ‘touchend‘, function( e ){ var touches = e.changedtouches[0], endtx = touches.clientx, endty = touches.clienty; // 在部分设备上 touch 事件比较灵敏,导致按下和松开手指时地事件坐标会出现一点点变化 if( math.abs(starttx - endtx) < 6 && math.abs(startty - endty) < 6 ){ console.log( ‘fire tap event‘ ); } }, false );
对于上面代码;可以再封装一下:
<button id="btn">点击</button> <script> var mySky = { tap: function(obj, fun) { var start_x = 0, start_y = 0; obj.addEventListener(‘touchstart‘,function(e){ start_x = e.touches[0].clientX; start_y = e.touches[0].clientY; //IE下此属性不规范,它们的最小值不是0而是2 document.addEventListener(‘touchend‘, touEnd, false); }); function touEnd(e){ var endX = e.changedTouches[0].clientX, endY = e.changedTouches[0].clientY; if(Math.abs(endX - start_x) < 6 && Math.abs(endY - start_y) < 6) { fun.call(obj,e); } document.removeEventListener(‘touchend‘, touEnd, false); }; } } var btn=document.getElementById("btn"); mySky.tap(btn,function(){ alert(‘我可以点击‘); }); </script>
var isTouchEnd = false, lastTime = 0, lastTx = null, lastTy = null, firstTouchEnd = true, body = document.body, dTapTimer, startTx, startTy, startTime; element.addEventListener( ‘touchstart‘, function( e ){ if( dTapTimer ){ clearTimeout( dTapTimer ); dTapTimer = null; } var touches = e.touches[0]; startTx = touches.clientX; startTy = touches.clientY; }, false ); element.addEventListener( ‘touchend‘, function( e ){ var touches = e.changedTouches[0], endTx = touches.clientX, endTy = touches.clientY, now = Date.now(), duration = now - lastTime; // 首先要确保能触发单次的 tap 事件 if( Math.abs(startTx - endTx) < 6 && Math.abs(startTx - endTx) < 6 ){ // 两次 tap 的间隔确保在 500 毫秒以内 if( duration < 301 ){ // 本次的 tap 位置和上一次的 tap 的位置允许一定范围内的误差 if( lastTx !== null && Math.abs(lastTx - endTx) < 45 && Math.abs(lastTy - endTy) < 45 ){ firstTouchEnd = true; lastTx = lastTy = null; console.log( ‘fire double tap event‘ ); } } else{ lastTx = endTx; lastTy = endTy; } } else{ firstTouchEnd = true; lastTx = lastTy = null; } lastTime = now; }, false ); // 在 iOS 的 safari 上手指敲击屏幕的速度过快, // 有一定的几率会导致第二次不会响应 touchstart 和 touchend 事件 // 同时手指长时间的touch不会触发click if( ~navigator.userAgent.toLowerCase().indexOf(‘iphone os‘) ){ body.addEventListener( ‘touchstart‘, function( e ){ startTime = Date.now(); }, true ); body.addEventListener( ‘touchend‘, function( e ){ var noLongTap = Date.now() - startTime < 501; if( firstTouchEnd ){ firstTouchEnd = false; if( noLongTap && e.target === element ){ dTapTimer = setTimeout(function(){ firstTouchEnd = true; lastTx = lastTy = null; console.log( ‘fire double tap event‘ ); }, 400 ); } } else{ firstTouchEnd = true; } }, true ); // iOS 上手指多次敲击屏幕时的速度过快不会触发 click 事件 element.addEventListener( ‘click‘, function( e ){ if( dTapTimer ){ clearTimeout( dTapTimer ); dTapTimer = null; firstTouchEnd = true; } }, false ); }
var startTx, startTy, lTapTimer; element.addEventListener( ‘touchstart‘, function( e ){ if( lTapTimer ){ clearTimeout( lTapTimer ); lTapTimer = null; } var touches = e.touches[0]; startTx = touches.clientX; startTy = touches.clientY; lTapTimer = setTimeout(function(){ console.log( ‘fire long tap event‘ ); }, 1000 ); e.preventDefault(); }, false ); element.addEventListener( ‘touchmove‘, function( e ){ var touches = e.touches[0], endTx = touches.clientX, endTy = touches.clientY; if( lTapTimer && (Math.abs(endTx - startTx) > 5 || Math.abs(endTy - startTy) > 5) ){ clearTimeout( lTapTimer ); lTapTimer = null; } }, false ); element.addEventListener( ‘touchend‘, function( e ){ if( lTapTimer ){ clearTimeout( lTapTimer ); lTapTimer = null; } }, false );
var isTouchMove, startTx, startTy; element.addEventListener( ‘touchstart‘, function( e ){ var touches = e.touches[0]; startTx = touches.clientX; startTy = touches.clientY; isTouchMove = false; }, false ); element.addEventListener( ‘touchmove‘, function( e ){ isTouchMove = true; e.preventDefault(); }, false ); element.addEventListener( ‘touchend‘, function( e ){ if( !isTouchMove ){ return; } var touches = e.changedTouches[0], endTx = touches.clientX, endTy = touches.clientY, distanceX = startTx - endTx distanceY = startTy - endTy, isSwipe = false; if( Math.abs(distanceX) >= Math.abs(distanceY) ){ if( distanceX > 20 ){ console.log( ‘fire swipe left event‘ ); isSwipe = true; } else if( distanceX < -20 ){ console.log( ‘fire swipe right event‘ ); isSwipe = true; } } else{ if( distanceY > 20 ){ console.log( ‘fire swipe up event‘ ); isSwipe = true; } else if( distanceY < -20 ){ console.log( ‘fire swipe down event‘ ); isSwipe = true; } } if( isSwipe ){ console.log( ‘fire swipe event‘ ); } }, false );
https://github.com/chenmnkken/monoevent/wiki/MonoEvent-%E7%9A%84%E4%BD%BF%E7%94%A8%E6%96%87%E6%A1%A3
http://levi.cg.am/archives/3546
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原文地址:http://www.cnblogs.com/surfaces/p/4503233.html