销售型企业网站,企业信用信息查询系统入口,学做网站的学校,区块链app开发/*
* table-sticky.js 混入函数
* 组件需要提供parent字段#xff0c;指定表格的className#xff08;字符串#xff09;
* 在页面局部组件使用此组件#xff0c;如果局部组件有使用display为none,会导致header头显示不全#xff0c;可使用v-if重新初始化组件
*/const …
/*
* table-sticky.js 混入函数
* 组件需要提供parent字段指定表格的className字符串
* 在页面局部组件使用此组件如果局部组件有使用display为none,会导致header头显示不全可使用v-if重新初始化组件
*/const mainContainer el-scrollbar__wrap; // 监听滚动的class容器
const topBarHeight 64.1; // 顶部距离设置const rafThrottle (fn) {let locked false;return function (...args) {if (locked) return;locked true;window.requestAnimationFrame(_ {fn.apply(this, args);locked false;});};
}function getTopDistance (element) {var distance element.offsetTop;while (element.offsetParent) {element element.offsetParent;distance element.offsetTop;}return distance;
}export default {mounted () {this.containerDom document.getElementsByClassName(mainContainer)this.clearListener()let timer setTimeout(() {this.initFixedHeader()clearTimeout(timer)}, 300)window.addEventListener(resize, this.resizeChange)},deactivated () {this.clearListener()},beforeDestroy () {this.clearListener()//取消监听窗口大小window.removeEventListener(resize, this.resizeChange)},activated () {this.initFixedHeader()this.updateFixedRight()window.addEventListener(resize, this.resizeChange)let timertimer setTimeout(() {let container this.containerDomif (container[0].scrollTop 0) {container[0].scrollTop container[0].scrollTop 1}clearTimeout(timer)}, 1000)},methods: {activatedReload () {window.addEventListener(resize, this.resizeChange)let timer setTimeout(() {this.clearFixedStyle()this.initFixedHeader()}, 300)this.timerList.push(timer)},reset () {this.clearFixedStyle()},// 窗口大小变化时初始化resizeChange () {this.headerDragend()let timer setTimeout(() {this.initFixedHeader()clearTimeout(timer)}, 500)},async initFixedHeader () {if (this.parent) {this.parentDom document.getElementsByClassName(this.parent)if (this.parentDom this.parentDom.length ! 0) {this.tableWidth this.parentDom[0].querySelector(.el-table__header-wrapper).getBoundingClientRect().widththis.setScrollXWidth()this.tableDom this.parentDom[0].getElementsByClassName(el-table__header-wrapper)this.scrollDom document.querySelector(.el-scrollbar__wrap)this.scrollDom.addEventListener(scroll, this.scrollEvent)// let classNames this.parentDom[0].getAttribute(class)// if (classNames.toLowerCase().indexOf(table_box) 0) {// this.parentDom[0].classList.add(table_box)// }}}},// 清空监听事件clearListener () {if (this.scrollDom) {this.scrollDom.removeEventListener(scroll, this.scrollEvent)window.removeEventListener(resize, this.resizeChange)this.clearFixedStyle()this.timerList.forEach(key {clearTimeout(key)});}},// 更新右侧固定栏updateFixedRight () {let { fixedRightHeaderDom, dom } this.getFixedDom()if (dom.classList.contains(fixed) this.fixedRightDom[0]) {let timer setTimeout(() {this.setFixedStyle({dom: fixedRightHeaderDom,left: this.fixedRightDom[0]?.getBoundingClientRect()?.left px,width: getComputedStyle(this.fixedRightDom[0], null).width,scrollLeft: fixedRightHeaderDom.scrollWidth})clearTimeout(timer)}, 100)}},async headerDragend () {await this.updateWidth()await this.updateFixedRight()this.setScrollXWidth()// await this.updateHeaderHeight()},setScrollXWidth () {let timer setTimeout(() {if (!this.parentDom) this.parentDom document.getElementsByClassName(this.parent)if (this.parentDom.length 0) returnlet dom this.parentDom[0].querySelector(.el-table__header)this.tableWidth this.parentDom[0].querySelector(.el-table__body-wrapper).getBoundingClientRect().widththis.tableDom[0].style.width this.tableWidth pxthis.updateHeaderHeight()this.headerWidth dom.style.widthclearTimeout(timer)}, 200)},// 更新表格宽度拖拽改变宽度时使用updateWidth () {if (!this.parentDom) this.parentDom document.getElementsByClassName(this.parent)const bodyWrapperDom this.parentDom[0].getElementsByClassName(el-table__body-wrapper)[0]const width getComputedStyle(bodyWrapperDom, null).width//表格宽度// 给表格设置宽度。const tableParent this.tableDomfor (let i 0; i tableParent.length; i) {tableParent[i].style.width width}},getFixedDom () {let fixedRightHeaderDom, fixedRightBox, fixedLeftHeaderDom, fixedLeftBox;let dom this.tableDom[0]if (this.fixedLeftDom this.fixedLeftDom[0]) {let lefarr this.fixedLeftDom[0].childrenfixedLeftHeaderDom lefarr[0]fixedLeftBox lefarr[1]}if (this.fixedRightDom this.fixedRightDom[0]) {let rightarr this.fixedRightDom[0].childrenfixedRightHeaderDom rightarr[0]fixedRightBox rightarr[1]}return { fixedRightHeaderDom, fixedRightBox, fixedLeftHeaderDom, fixedLeftBox, dom }},// 更新表头高度表头高度有可能改变updateHeaderHeight () {this.$nextTick(() {this.tableDom this.parentDom[0].getElementsByClassName(el-table__header-wrapper)let obj this.tableDom[0].getBoundingClientRect()if (obj.height ! this.tablexy.height) {this.tablexy.height obj.height;let { dom } this.getFixedDom()if (dom.classList.contains(fixed) this.parentDom[0]) {let timer setTimeout(() {this.parentDom[0].getElementsByClassName(el-table__fixed-body-wrapper)[0].style.top 0let container this.containerDomif (container container[0]) {container[0].scrollTop container[0].scrollTop 3;}clearTimeout(timer)}, 100)}}})},// 获取表格属性getTableXy () {this.tablexy this.tableDom[0].getBoundingClientRect()this.tablexy.height this.tableDom[0].offsetHeight// let offsetTop getTopDistance(this.tableDom[0])// this.tablexy.height offsetTopreturn this.tablexy},getDom () {if (!this.parentDom) {this.parentDom document.getElementsByClassName(this.parent)}},//滚动事件scrollEvent: rafThrottle(async function (e) {this.getDom()this.tableDom this.parentDom[0].getElementsByClassName(el-table__header-wrapper)if (this.tablexy.top 0 || !this.tablexy.height || !this.tablexy.top) {await this.getTableXy()}this.fixedRightDom this.parentDom[0].getElementsByClassName(el-table__fixed-right)this.fixedLeftDom this.parentDom[0].getElementsByClassName(el-table__fixed)let { height, top, left } this.tablexylet scrollTop e.target.scrollToplet { fixedRightHeaderDom, fixedRightBox, fixedLeftHeaderDom, fixedLeftBox, dom } this.getFixedDom()// table滚动到下面的时候切换列表页面, 再滚回顶部此时top为负数悬浮header不会回到原来的位置故而需要重置toptop top 0 ? 0 : top;if (scrollTop height / 2 top) {// 存在右侧固定表头if (fixedRightHeaderDom) {this.setFixedStyle({dom: fixedRightHeaderDom,left: this.fixedRightDom[0].getBoundingClientRect().left px,width: getComputedStyle(this.fixedRightDom[0], null).width,scrollLeft: fixedRightHeaderDom.scrollWidth})fixedRightBox.style.top 0 px}// 左侧固定if (fixedLeftHeaderDom) {this.setFixedStyle({dom: fixedLeftHeaderDom,left: left px,width: getComputedStyle(this.fixedLeftDom[0], null).width,scrollLeft: 0})fixedLeftBox.style.top 0 px}dom.classList.add(fixed)//加一个固定标识this.updateWidth()dom.style.position fixeddom.style.zIndex 2000dom.style.top topBarHeight pxdom.style.overflow hidden} else {this.clearFixedStyle()}}),//设置固定setFixedStyle (data) {let { dom, scrollLeft, width, left } datadom.style.zIndex 2000dom.style.position fixeddom.style.top topBarHeight pxdom.scrollLeft scrollLeftdom.style.width widthdom.style.overflow hiddendom.style.left left},// 清除header固定clearFixedStyle () {if (!this.tableDom) returnlet { height, left } this.tablexylet { dom, fixedRightHeaderDom, fixedRightBox, fixedLeftHeaderDom, fixedLeftBox } this.getFixedDom()if (dom.classList.contains(fixed)) {if (fixedRightHeaderDom) {fixedRightBox.style.top height pxfixedRightHeaderDom.removeAttribute(style);}if (fixedLeftHeaderDom) {fixedLeftHeaderDom.style.zIndex 0fixedLeftHeaderDom.style.position staticfixedLeftHeaderDom.style.top 0 pxfixedLeftHeaderDom.style.left left pxfixedLeftBox.style.top getComputedStyle(dom).height}dom.classList.remove(fixed)dom.style.position staticdom.style.top 0dom.style.zIndex 0}},},computed: {__opened () {return this.$store.state.app.sidebar.opened}},watch: {__opened () {this.$nextTick(() {this.setScrollXWidth()})}},data () {return {tablexy: {},//表格的左边宽度信息fixedRightDom: null,//右侧fixedLeftDom: null,//左侧栏固定scrollDom: null,//滚动的domparentDom: null,//表格的父元素domtableWidth: 0,timerList: [],tableDom: null,containerDom: null}},
}参考自—— 一个好用的table底部悬浮滚动条插件 根据自己的需求调整。
