上面，这段核心代码中有一个setTransition 函数，这个函数的作用是在手指离开的时候给容器元素添加transition属性，让容器有一个过渡动画，完成关闭或者打开动画；所以在手指按下去的瞬间需要把容器上的这个transition属性去除，避免滑动过程中出现容器和手指滑动延迟的不良体验。 最后提醒下，代码中使用translate3d而非translate的原因是为了启动移动端手机的动画3D加速，提升动画流畅度。最终代码如下：
<template> <div> <div :class="transitionClass" :style="wrapStyle"> <slot></slot> </div> <div :class="transitionClass" :style="contentStyle" @touchstart="touchstart" @touchmove="touchmove" @touchend="touchend"> <slot></slot> </div> </div> </template> <script> export default { props: { width: { type: String, default: '250' }, ratio: { type: Number, default: 2 } }, data () { return { isMoving: false, transitionClass: '', startPoint: { X: 0, y: 0 }, oldPoint: { x: 0, y: 0 }, move: { x: 0, y: 0 } } }, computed: { wrapStyle () { let style = { width: `${this.width}px`, left: `-${this.width / this.ratio}px`, transform: `translate3d(${this.move.x / this.ratio}px, 0px, 0px)` } return style }, contentStyle () { let style = { transform: `translate3d(${this.move.x}px, 0px, 0px)` } return style } }, methods: { touchstart (e) { this.oldPoint.x = e.touches[0].pageX this.oldPoint.y = e.touches[0].pageY this.startPoint.x = this.move.x this.startPoint.y = this.move.y this.setTransition() }, touchmove (e) { let newPoint = { x: e.touches[0].pageX, y: e.touches[0].pageY } let moveX = newPoint.x - this.oldPoint.x let moveY = newPoint.y - this.oldPoint.y if (Math.abs(moveX) < Math.abs(moveY)) return false e.preventDefault() this.isMoving = true moveX = this.startPoint.x * 1 + moveX * 1 moveY = this.startPoint.y * 1 + moveY * 1 if (moveX >= this.width) { this.move.x = this.width } else if (moveX <= 0) { this.move.x = 0 } else { this.move.x = moveX } }, touchend (e) { this.setTransition(true) this.isMoving = false this.move.x = (this.move.x > this.width / this.ratio) ? this.width : 0 }, // 点击切换 switch () { this.setTransition(true) this.move.x = (this.move.x === 0) ? this.width : 0 }, setTransition (isTransition = false) { this.transitionClass = isTransition ? 'r-slide-menu-transition' : '' } } } </script> <style lang="scss"> @mixin one-screen { position: absolute; left:0; top:0; width:100%; height:100%; overflow: hidden; } .r-slide-menu{ @include one-screen; &-wrap, &-content{ @include one-screen; } &-transition{ -webkit-transition: transform .3s; transition: transform .3s; } } </style>
总结
以上所述是小编给大家介绍的vue移动端UI框架实现QQ侧边菜单组件，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脚本之家网站的支持！
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