手把手教你实现web页面内容滑动效果
标签的触摸/鼠标滑动事件，添加元素的切换动画，效果如下：
事件监听鼠标事件和触摸事件监听：componentDidMount() { var teachingReportDiv = document.getElementById("teachingReport") as HTMLElement; teachingReportDiv.onmousedown = this.onMouseDown; teachingReportDiv.onmouseup = this.onMouseUp; teachingReportDiv.addEventListener('touchstart', this.onTouchStart, false); teachingReportDiv.addEventListener('touchmove', this.onTouchMove, false); teachingReportDiv.addEventListener('touchend', this.onTouchEnd, false); } 触摸事件，不能HTMLElement.ontouchstart添加事件监听，可以EventListener或者在标签中添加。触摸事件，不能HTMLElement.ontouchstart添加事件监听，可以EventListener或者在标签中添加。componentDidMount() { var teachingReportDiv = document.getElementById("teachingReport") as HTMLElement; teachingReportDiv.onmousedown = this.onMouseDown; teachingReportDiv.onmouseup = this.onMouseUp; teachingReportDiv.addEventListener('touchstart', this.onTouchStart, false); teachingReportDiv.addEventListener('touchmove', this.onTouchMove, false); teachingReportDiv.addEventListener('touchend', this.onTouchEnd, false); } 触摸事件，不能HTMLElement.ontouchstart添加事件监听，可以EventListener或者在标签中添加。触摸事件有以下几个：
this.onTouchStart(event)}/>触摸事件有以下几个：touchstart事件：手指触摸时候触发（支持多指触发）touchmove事件：手指在滑动的时候连续地触发。在这个事件发生期间，调用preventDefault()事件可以阻止滚动，当然也不能滥用否则会影响原有页面的上下滚动等。touchend事件：手指从屏幕上离开的时候触发touchcancel事件：当系统停止跟踪触摸的时候触发。关于这个事件的确切出发时间，文档中并没有具体说明。。。不建议使用事件处理添加全局字段：locationStartX: number = 0; locationEndX: number = 0;滑动处理，超出滑动阈值后，更新相关状态。onTouchStart = (event) => { this.locationStartX = event.targetTouches[0].pageX; } onTouchMove = (event) => { // event.preventDefault(); this.locationEndX = event.targetTouches[0].pageX; } onTouchEnd = (event) => { const locationChangedX = this.locationEndX < this.locationStartX; if (Math.abs(locationChangedX) > 10) { const isSlidingToRight=locationChangedX<0; } }添加切换动画动画，可以通过state参数触发
this.onTouchStart(event)}/>动画数据参考：//动画 @keyframes showFromLeft { from { opacity: 0; transform: translateX(-100px); } to { opacity: 1; transform: translateX(0px); } } @keyframes showFromRight { from { opacity: 0; transform: translateX(100px); } to { opacity: 1; transform: translateX(0px); } } @keyframes hideToLeft { from { opacity: 1; transform: translateX(0px); } to { opacity: 0; transform: translateX(-100px); } } @keyframes hideToRight { from { opacity: 1; transform: translateX(0px); } to { opacity: 0; transform: translateX(100px); } }本文完~
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