; (function () { function addCssRule (selector, rules, index) { var style = document.createElement('style'); style.type = 'text/css'; document.head.appendChild(style); style.sheet.insertRule(selector + "{" + rules + "}", index || 0); } window._ADJsIsSeparatedSeparately = true window.vivoNewsDetailPage && window.vivoNewsDetailPage.syncNewsAccuseUrl && window.vivoNewsDetailPage.syncNewsAccuseUrl('https://browserpage.vivo.com.cn/newsPage/staticPages/report.html') var source = window.document.querySelector( "[name='vivo_3rd_news_source']" ).value var docid = window.document.querySelector( "[name='vivo_3rd_news_docid']" ).value var isVivo = !!window.document.querySelector( "[name='vivo_3rd_news_vivo_source']" ) var isVideo = window.document.querySelector('#vivo-news-video') ? true : false try { var isFlipPhone = window.vivoComment && window.vivoComment.isFlipPhone && window.vivoComment.isFlipPhone(); var article = document.querySelector("#vivo-news-graphic") || document.querySelector("#vivo-news-video"); if (article && isFlipPhone) { addCssRule('.vivo-relative-news', 'display:none !important;') } } catch (err) {}; if(isVideo){ var headerDom = document.querySelector('.vivo-article-header') if(headerDom){ var topStyle = 'margin-top:'+ headerDom.clientHeight +'px !important;' var fixedStyle = 'position: fixed !important;' addCssRule('.yidian-personalized-source .vivo-article-header:first-child,#vivo-news-video:not(.yidian-personalized-source) .vivo-news-article .vivo-article-detail:not(.use-h5-player) .vivo-article-header', fixedStyle) addCssRule('.yidian-personalized-source .vivo-article-header:first-child + .vivo-article-title,#vivo-news-video:not(.yidian-personalized-source) .vivo-news-article .vivo-article-detail:not(.use-h5-player) .vivo-article-header+.vivo-article-title', topStyle) } } function getUrlParam (key) { var reg = new RegExp('[?|&]' + key + '=([^&]+)') var match = location.search.match(reg) return match && match[1] } var notebookEl = document.querySelector('#vivo-news-graphic.notebook-content-type') if (notebookEl) { try { var swiperNumPaginationTimer = null function toggleElShow(el, isShow) { if (el) { swiperNumPaginationTimer && clearTimeout(swiperNumPaginationTimer) if (isShow) { el.classList.remove('fade-out') el.classList.add('fade-in') } else { el.classList.remove('fade-in') el.classList.add('fade-out') } } } var swiperPaginationEl = notebookEl.querySelector('.swiper-pagination') var swiperNumPaginationEl = notebookEl.querySelector('.swiper-num-pagination') var swiperSlideEls = notebookEl.querySelectorAll('.swiper-slide') var totalSwiperSlideNum = swiperSlideEls.length var swiper = new Swiper(".swiper", { speed: 300, pagination: { el: ".swiper-pagination", renderBullet: function (index, className) { return '' }, }, uniqueNavElements: false, passiveListeners : false, on: { init: function(){ if (swiperPaginationEl) { var swiperPaginationBullets = swiperPaginationEl.querySelectorAll('.swiper-pagination-bullet-diy') var swiperPaginationBullet = swiperPaginationBullets[this.activeIndex] if (swiperPaginationBullet) { swiperPaginationBullet.classList.add('active') } if (swiperPaginationBullets.length > 5) { swiperPaginationBullets[4].classList.add('scale') } } if (swiperNumPaginationEl) { var activeEl = swiperNumPaginationEl.querySelector('.active') var totalEl = swiperNumPaginationEl.querySelector('.total') activeEl && (activeEl.innerText = this.activeIndex + 1) totalEl && (totalEl.innerText = totalSwiperSlideNum) if (totalSwiperSlideNum > 5) { toggleElShow(swiperNumPaginationEl, true) swiperNumPaginationTimer = setTimeout(function() { toggleElShow(swiperNumPaginationEl) }, 5000) } } }, } }) swiper.on('slideChange', function () { if (swiperPaginationEl) { var swiperPaginationBullets = swiperPaginationEl.querySelectorAll('.swiper-pagination-bullet-diy') for (var i = 0; i < swiperPaginationBullets.length; i++) { var el = swiperPaginationBullets[i] if (i == this.activeIndex) { el.classList.add('active') } else { el.classList.remove('active') } } if (swiperPaginationBullets.length > 5) { if (this.swipeDirection == 'next') { if (1 < this.activeIndex && this.activeIndex < swiperPaginationBullets.length - 2) { for (var j = 0; j < swiperPaginationBullets.length; j++) { var ele = swiperPaginationBullets[j] ele.style.left = '-' + 16*(this.activeIndex - 2) + 'px' } } } else { if (1 < this.activeIndex && this.activeIndex < swiperPaginationBullets.length - 3) { for (var k = 0; k < swiperPaginationBullets.length; k++) { var ele = swiperPaginationBullets[k] var leftVal = parseInt(ele.style.left) || 0 leftVal = leftVal + 16 ele.style.left = leftVal + 'px' } } } var limitIndex = this.swipeDirection == 'next' ? swiperPaginationBullets.length - 3 : 2 var addScale = this.swipeDirection == 'next' ? this.activeIndex - 2 : 4 if (this.activeIndex == limitIndex) { for (var m = 0; m < swiperPaginationBullets.length; m++) { var elem = swiperPaginationBullets[m] if (m == addScale) { elem.classList.add('scale') } else { elem.classList.remove('scale') } } } if (2 < this.activeIndex && this.activeIndex < swiperPaginationBullets.length - 3) { for (var n = 0; n < swiperPaginationBullets.length; n++) { var ele = swiperPaginationBullets[n] if (n == this.activeIndex - 2 || n == this.activeIndex + 2) { ele.classList.add('scale') } else { ele.classList.remove('scale') } } } } } if (swiperNumPaginationEl) { var activeEl = swiperNumPaginationEl.querySelector('.active') activeEl && (activeEl.innerText = this.activeIndex + 1) } }).on('sliderMove', function (swiper, event) { if (swiperNumPaginationEl) { swiperNumPaginationTimer && clearTimeout(swiperNumPaginationTimer) if (!Array.from(swiperNumPaginationEl.classList).includes('fade-in')) { if (totalSwiperSlideNum > 5) { toggleElShow(swiperNumPaginationEl, true) } } } }).on('transitionEnd', function () { if (swiperNumPaginationEl) { swiperNumPaginationTimer = setTimeout(function() { toggleElShow(swiperNumPaginationEl) }, 5000) } }) if (window.vivoNewsDetailPage && window.vivoNewsDetailPage.enableTouchMoveRightBack) { var picturesSwiperWrap = document.querySelector('.pictures-swiper-wrap') var timer = null if (picturesSwiperWrap) { picturesSwiperWrap.addEventListener('touchstart', function () { timer && clearTimeout(timer) window.vivoNewsDetailPage.enableTouchMoveRightBack(false) }) picturesSwiperWrap.addEventListener('touchmove', function () { timer && clearTimeout(timer) window.vivoNewsDetailPage.enableTouchMoveRightBack(false) }) picturesSwiperWrap.addEventListener('touchend', function () { timer = setTimeout(function() { window.vivoNewsDetailPage.enableTouchMoveRightBack(true) timer && clearTimeout(timer) }, 200) }) } } } catch (err) { console.log('轮播图代码逻辑出错', err) var picturesSwiperWrapEl = notebookEl.querySelector('.pictures-swiper-wrap') picturesSwiperWrapEl.style.display = 'none' } } if (isVivo) { var vivoVideoShow = getUrlParam('vivo_video_show') var isHideH5Video = vivoVideoShow && vivoVideoShow == 0 var video = document.querySelector('.vivo-article-detail') if (video) { if (!isHideH5Video) { video.classList.add('use-h5-player') } else { video.classList.remove('use-h5-player') } } } if (source === 'toutiao') { if (isVideo) { function getUAVersion () { var UA = navigator.userAgent var reg = /VivoBrowser\/([\d|\.]+)+/ var matches = reg.exec(UA) if (matches) { return matches[1] } else { return '' } } var compactMode = getUrlParam('compact_mode') var isHideH5Video = compactMode && compactMode == 1 var uaVersion = getUAVersion() if (!(isHideH5Video && uaVersion)) { var vivoArticleDetail = document.querySelector('.vivo-article-detail') vivoArticleDetail.classList.add('use-h5-player') try { addCssRule("#vivo-news-video.toutiao .vivo-article-detail .recommend-author-box", "z-index:1;") } catch (error) { } } } else { try { var vivoNewsContent = document.querySelector(".vivo-news-content"); var imgList = (vivoNewsContent && vivoNewsContent.querySelectorAll(".img-container > img")) || []; var width = window.screen.width / 2; addCssRule('#vivo-news-graphic .vivo-news-content .pgc-img.width-margin-auto', 'margin-left: auto !important;margin-right: auto !important;'); addCssRule('#vivo-news-graphic .vivo-news-content .img-container.width-margin-auto', 'margin-left: auto !important;margin-right: auto !important;padding-bottom: 0 !important;'); for (var i = 0; i < imgList.length; i++) { var img = imgList[i]; var imgRect = img.getBoundingClientRect(); if (img.height && img.src !== 'data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==' && (imgRect.top < window.innerHeight && imgRect.bottom > 0)) { continue; } var imgWidth = img.getAttribute("img_width"); var imgHeight = img.getAttribute("img_height"); if (imgWidth < width && imgWidth > 0) { var imgContainerDom = img.parentNode; var pgcDom = imgContainerDom.parentNode; if (pgcDom.classList.contains('pgc-img')) { pgcDom.style.width = imgWidth + 'px'; pgcDom.classList.add('width-margin-auto'); img.classList.add("width-auto"); } else { if (imgHeight > 0) { imgContainerDom.style.width = imgWidth + 'px'; imgContainerDom.style.height = imgHeight + 'px'; imgContainerDom.classList.add('width-margin-auto'); } } } } } catch (e) { console.log(e); } } } if (isVivo) { var queryArticleUrl = "https://fdcontentdispatch.vivo.com.cn/error/page/check.do?articleId=" + "&source=" + source + "&srcId=" + docid + "&vivoBusiness=browser" function getArticleStatus (successCallback, failCallback) { var xhr = new XMLHttpRequest() xhr.timeout = 3000 xhr.open('GET', queryArticleUrl, true) xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { var result = xhr.responseText ? JSON.parse(xhr.responseText) : {}; if (result && result.code === 0) { successCallback && successCallback(result.data) } else { failCallback && failCallback() } } } xhr.send(null) } getArticleStatus(function (errorHref) { if (errorHref) { // 获取push重定向需要的新增参数 var cpNewsPrefix = '' // 其他源从input中获取 if (document.querySelector("[name='vivo_3rd_news_cooperator']")) { cpNewsPrefix = document.querySelector("[name='vivo_3rd_news_cooperator']").value || '' } window.location.replace(errorHref + "?docId=" + docid + "&source=" + source + "&status=404&from=vivo&cpNewsPrefix=" + cpNewsPrefix) } }, function () { console.log('请求已删除文章查询接口失败'); }) } })()

中考数学——反比例函数中K的几何意义总结