js上拉加载下拉刷新代码

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Html

Css

html,body {
	overflow:hidden;
}
.page {
	width:100%;
	height:100%;
	background:#f7f7f7;
	position:absolute;
	top:0;
	left:0;
	overflow:scroll;
}
.content {
	/* padding:20px;
	*/
        /* max-height:340px;
	*/
        /* overflow:auto;
	*/
        transition:0.2s;
}
li {
	padding:20px;
	height:20px;
	margin:10px;
	background:white;
}
.refresh-loading {
	height:50px;
	line-height:50px;
	overflow:hidden;
	display:flex;
	align-items:center;
	justify-content:center;
	margin-top:-50px;
}
.type-1 .con,.refresh-loading .g-m--c {
	width:16px;
	height:16px;
	border-radius:50%;
	-webkit-animation-name:locate-loading;
	-moz-animation-name:locate-loading;
	animation-name:locate-loading;
	-webkit-animation-duration:1.58s;
	-moz-animation-duration:1.58s;
	animation-duration:1.58s;
	-webkit-animation-timing-function:linear;
	-moz-animation-timing-function:linear;
	animation-timing-function:linear;
	-webkit-animation-iteration-count:infinite;
	-moz-animation-iteration-count:infinite;
	animation-iteration-count:infinite;
	border-top:2px solid #f43939;
	border-left:2px solid #df5555;
	margin-right:10px;
}
@keyframes locate-loading {
	0% {
	opacity:1;
	-webkit-transform:rotate(0deg);
	-moz-transform:rotate(0deg);
	transform:rotate(0deg);
}
100% {
	opacity:1;
	-webkit-transform:rotate(360deg);
	-moz-transform:rotate(360deg);
	transform:rotate(360deg);
}
}@-webkit-keyframes locate-loading {
	0% {
	opacity:1;
	-webkit-transform:rotate(0deg);
	-moz-transform:rotate(0deg);
	transform:rotate(0deg);
}
100% {
	opacity:1;
	-webkit-transform:rotate(360deg);
	-moz-transform:rotate(360deg);
	transform:rotate(360deg);
}
}@-moz-keyframes locate-loading {
	0% {
	opacity:1;
	-webkit-transform:rotate(0deg);
	-moz-transform:rotate(0deg);
	transform:rotate(0deg);
}
100% {
	opacity:1;
	-webkit-transform:rotate(360deg);
	-moz-transform:rotate(360deg);
	transform:rotate(360deg);
}
}.refresh-text {
	color:#999;
	text-align:center;
	font-size:12px;
}
.refresh-down {
	display:none;
	margin-right:10px;
}
.refresh-down.is-rotate {
	transform:rotate(180deg);
}
.finish {
	color:#999;
	font-size:12px;
	height:50px;
	line-height:50px;
	text-align:center;
}
.more-c {
	font-size:12px;
	color:#999;
}
.more-c .con {
	margin:0 5px 0 0;
}
.more-c .type {
	height:50px;
	line-height:50px;
	display:flex;
	align-items:center;
	justify-content:center;
}
.type-1:after {
	content:'加载中...';
	display:inline-block;
}

// 获取dom
window.onload = function() {
    new vueTouch(moveEle)
    // pageContent.style.width = document.body.offsetWidth + 'px'
    // pageContent.style.height = document.body.offsetHeight + 'px'
}
var loadMoreBox = document.querySelector('.loadmore')
var moreC = document.querySelector('.more-c')
var pageContent = document.querySelector('.page')
var refreshDown = document.querySelector('.refresh-down')
var circle = document.querySelector('#circle')
//下拉刷新
var finished = document.querySelector('.finish')
//内容容器，可视区域
var moveEle = document.getElementsByClassName('content')[0]
//真正的内容
var scrollView = document.getElementsByClassName('scrollview')[0]
//刷新的loading
var refreshEle = document.getElementsByClassName('refresh-loading')[0]
//刷新显示的提示文字
var refreshTxtEle = document.getElementsByClassName('refresh-text')[0]

function css(ele, t) {
    // ele.style.transition = 'all ' + t + 'ms'
    // ele.style.webkitTransition = 'all ' + t + 'ms'
    ele.style.transform = `translate3d(0px,${t}px,0px)`
}

var loadMore = document.getElementById('loadMore')
var className = loadMore.getAttribute('class')
var loadData = false

function vueTouch(el) {
    this.obj = el
    this.touch = false
    this.moved = false
    this.startY = 0
    this.diff = 0
    this.moveDiff = 50
    this.pagePull = true
    this.loadData = false
    el.addEventListener(
        'touchstart',
        (e) => {
            e.stopPropagation()
            this.start(e)
        },
        false
    )
    el.addEventListener(
        'touchend',
        (e) => {
            e.stopPropagation()
            this.end(e)
        },
        false
    )
    el.addEventListener(
        'touchmove',
        (e) => {
            e.stopPropagation()
            this.move(e)
        },
        false
    )
    pageContent.addEventListener(
        'scroll',
        (e) => {
            e.stopPropagation()
            this.scroll(e)
        },
        false
    )
    // vnode.key = this.randomString()
    this.scroll()
}

vueTouch.prototype = {
    start: function(e) {
        if (pageContent.scrollTop > 0) {
            //当页面已经有滚动或者不是置顶的时候，不需要进行下拉刷新，是页面正常的滑动
            this.touch = false
            return
        }
        this.touch = true //触摸开始
        this.moved = false //还没有进行下拉刷新的滑动
        this.startY = e.touches[0].clientY //记录当前手指在屏幕上的纵向坐标，用于判断页面是上滑还是下滑
        // 样式修改
        circle.style.display = 'none'
        moreC.style.display = 'block'
        finished.style.display = 'none'
    },
    end: function(e) {
        if (!this.touch || !this.moved) {
            // refreshEle.style.height = '0px'
            // css(this.obj, 0)
            return
        }
        // 添加过渡效果
        this.obj.style.transition = 'transform .2s'
        // css(this.obj, 50)
        refreshDown.setAttribute('class', 'refresh-down')
        this.pagePull = false
        if (this.diff > this.moveDiff) {
            refreshDown.style.display = 'none'
            circle.style.display = 'block'
            refreshTxtEle.innerHTML = '刷新中'
            css(this.obj, this.moveDiff)
            // refreshEle.style.height = this.moveDiff + 'px'
            setTimeout(() => {
                let childNodes = scrollView.children
                for (let j = childNodes.length - 1; j >= 0; j--) {
                    scrollView.removeChild(childNodes[j])
                }
                //假设每页有6条数据
                for (let i = 1; i < 7; i++) {
                    let li = document.createElement('li')
                    let index = i
                    li.innerHTML = index
                    scrollView.appendChild(li)
                }
                //延迟模拟接口调用
                css(this.obj, 0)
                // refreshEle.style.height = '0px'
                setTimeout(() => {
                    //控制在刷新期间，重复向下拉动，不做任何操作
                    this.pagePull = true
                    // 判断当前内容是否充满，没有，则加载
                    if (scrollView.offsetHeight <= pageContent.offsetHeight) {
                        moreC.style.display = 'block'
                        finished.style.display = 'none'
                        this.scroll()
                    }
                }, 300)
            }, 1000)
        } else {
            this.pagePull = true
            css(this.obj, 0)
            // refreshEle.style.height = '0px'
        }
    },
    move: function(e) {
        if (!this.touch || !this.pagePull) {
            return
        }
        //计算的移动位移
        let touchesDiff = e.touches[0].clientY - this.startY
        //说明页面是向上滑的，不做任何操作
        if (touchesDiff < 0) {
            this.moved = false
            return
        }
        // 为了清除卡顿问题，需要清除过渡效果
        this.obj.style.transition = 'none'
        //
        this.moved = true
        this.diff = touchesDiff
        let distance = 0
        //moveDiff至少要等于loading的高度
        if (this.diff <= this.moveDiff) {
            //moveDiff至少要等于loading的高度
            //当滑动小于规定的临界值时
            distance = this.diff
            refreshTxtEle.innerHTML = '下拉可刷新'
            refreshDown.style.display = 'block'
            // css(this.obj, touchesDiff)
        } else {
            //当滑动小于规定的临界值时
            refreshTxtEle.innerHTML = '释放可刷新'
            refreshDown.setAttribute('class', 'refresh-down is-rotate')
            //弹性
            distance = this.moveDiff + 0.3 * (touchesDiff - this.moveDiff)
        }
        if (distance > 0) {
            //滑动的距离
            css(this.obj, distance)
            // refreshEle.style.height = distance + 'px'
        }
    },
    scroll: function(e) {
        const _this = this
        requestAnimationFrame(function() {
            //当数据正在加载时，直接返回
            if (_this.loadData) {
                return
            }
            if (scrollView.childElementCount >= 30) {
                finished.style.display = 'block'
                moreC.style.display = 'none'
                return
            }
            let contentHeight = scrollView.offsetHeight
            //滚动的距离，加上可视窗口的高度，因为设置了content的max-height为300px
            // let scrollTop = pageContent.offsetHeight
            let scrollTop = pageContent.scrollTop + pageContent.offsetHeight
            // let scrollTop = _this.obj.scrollTop + 300
            if (contentHeight && scrollTop > contentHeight - 30) {
                //当滚动距离内容底部30px的时候，拉取下一页数据
                //html5提供的classList
                loadMore.classList.add('type-1')
                _this.loadData = true
                setTimeout(() => {
                    //延迟模拟接口调用
                    loadMore.classList.remove('type-1')
                    let len = scrollView.childElementCount
                    for (let i = 1; i < 7; i++) {
                        let li = document.createElement('li')
                        let index = len + i
                        li.innerHTML = index
                        scrollView.appendChild(li)
                    }
                    _this.loadData = false
                }, 1000)
                // var classVal = className.concat('type-1');
                // loadMore.setAttribute('class',classVal);
            }
        })
    },
    randomString: function(e) {
        let len = 10
        let $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz123456789'
        let maxPos = $chars.length
        let pwd = ''
        for (let i = 0; i < len; i++) {
            pwd += $chars.charAt(Math.floor(Math.random() * maxPos))
        }
        return pwd
    },
}

↑上面代码改变，会自动显示代码结果 jQuery调用版本：1.11.3

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js上拉加载下拉刷新代码



代码描述：使用纯js技术实现上拉加载和下拉刷新

更新时间：2021-07-16 00:58:23
<div class="page"></div>
作为最外层滚动盒子，可以根据自己需求进行修改
<div class="content"></div>
作为下拉刷新动画盒子
<div class="scrollview"></div>
作为上拉加载内容承载
/* 加载内容的动画内容，top：bottom */ <div class="refresh-loading"></div>
下拉刷新动画内容
<div class="more-c"></div>
上拉加载动画内容
/* 完成加载时的样式 */ <div class="finish"></div>

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