瀏覽器/html/css面試題 · 前端面試題精編（微信小程序（基礎到高級）js視頻資源、vue/js/html/css/React/ES6面試題、算法、插件大全）（輕松面對面試）（持續更新）

[1.什么是盒模型](1.%E4%BB%80%E4%B9%88%E6%98%AF%E7%9B%92%E6%A8%A1%E5%9E%8B.md) [2.行內元素有哪些？塊級元素有哪些？空(void)元素有那些？行內元素和塊級元素有什么區別？](2.%E8%A1%8C%E5%86%85%E5%85%83%E7%B4%A0%E5%9D%97%E5%85%83%E7%B4%A0%E7%A9%BA%E5%85%83%E7%B4%A0.md) [3.簡述src和href的區別](3.%E7%AE%80%E8%BF%B0src%E5%92%8Chref%E7%9A%84%E5%8C%BA%E5%88%AB.md) [4.什么是css Hack](4%E4%BB%80%E4%B9%88%E6%98%AFcssHack.md) [5.什么叫優雅降級和漸進增強](5.%E4%BB%80%E4%B9%88%E5%8F%AB%E4%BC%98%E9%9B%85%E9%99%8D%E7%BA%A7%E5%92%8C%E6%B8%90%E8%BF%9B%E5%A2%9E%E5%BC%BA.md) [6.px和em的區別](6.px%E5%92%8Cem%E7%9A%84%E5%8C%BA%E5%88%AB.md) [7.HTML5 為什么只寫<!DOCTYPE HTML>](7.HTML5%E4%B8%BA%E4%BB%80%E4%B9%88%E5%8F%AA%E5%86%99DOCTYPEHTML.md) [8.Http的狀態碼有哪些](8.Http%E7%9A%84%E7%8A%B6%E6%80%81%E7%A0%81%E6%9C%89%E5%93%AA%E4%BA%9B.md) [9.一次完整的HTTP事務是怎么一個過程](9.%E4%B8%80%E6%AC%A1%E5%AE%8C%E6%95%B4%E7%9A%84HTTP%E4%BA%8B%E5%8A%A1%E6%98%AF%E6%80%8E%E4%B9%88%E4%B8%80%E4%B8%AA%E8%BF%87%E7%A8%8B.md) [10.HTTPS是如何實現加密](10.HTTPS%E6%98%AF%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E5%8A%A0%E5%AF%86.md) [11.瀏覽器是如何渲染頁面的](11.%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%AF%E5%A6%82%E4%BD%95%E6%B8%B2%E6%9F%93%E9%A1%B5%E9%9D%A2%E7%9A%84.md) [12.瀏覽器的內核有哪些？分別有什么代表的瀏覽器](12.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%86%85%E6%A0%B8.md) [13.頁面導入時，使用link和@import有什么區別](13.%E9%A1%B5%E9%9D%A2%E5%AF%BC%E5%85%A5%E6%97%B6%EF%BC%8C%E4%BD%BF%E7%94%A8link%E5%92%8Cimport%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md) [14.如何優化圖像，圖像格式的區別](14.%E5%A6%82%E4%BD%95%E4%BC%98%E5%8C%96%E5%9B%BE%E5%83%8F%EF%BC%8C%E5%9B%BE%E5%83%8F%E6%A0%BC%E5%BC%8F%E7%9A%84%E5%8C%BA%E5%88%AB.md) [15.列舉你了解Html5. Css3 新特性](15.%E5%88%97%E4%B8%BE%E4%BD%A0%E4%BA%86%E8%A7%A3Html5.Css3%E6%96%B0%E7%89%B9%E6%80%A7.md) [16.可以通過哪些方法優化css3 animation渲染](16.%E5%8F%AF%E4%BB%A5%E9%80%9A%E8%BF%87%E5%93%AA%E4%BA%9B%E6%96%B9%E6%B3%95%E4%BC%98%E5%8C%96css3animation%E6%B8%B2%E6%9F%93.md) [17.列舉幾個前端性能方面的優化](17.%E5%88%97%E4%B8%BE%E5%87%A0%E4%B8%AA%E5%89%8D%E7%AB%AF%E6%80%A7%E8%83%BD%E6%96%B9%E9%9D%A2%E7%9A%84%E4%BC%98%E5%8C%96.md) [18.如何實現同一個瀏覽器多個標簽頁之間的通信](18.%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E5%90%8C%E4%B8%80%E4%B8%AA%E6%B5%8F%E8%A7%88%E5%99%A8%E5%A4%9A%E4%B8%AA%E6%A0%87%E7%AD%BE%E9%A1%B5%E4%B9%8B%E9%97%B4%E7%9A%84%E9%80%9A%E4%BF%A1.md) [19.瀏覽器的存儲技術有哪些](19.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%AD%98%E5%82%A8%E6%8A%80%E6%9C%AF%E6%9C%89%E5%93%AA%E4%BA%9B.md) [20.css定位方式](20.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%AE%9A%E4%BD%8D%E6%96%B9%E5%BC%8F.md) [21.盡可能多的寫出瀏覽器兼容性問題](21.%E5%B0%BD%E5%8F%AF%E8%83%BD%E5%A4%9A%E7%9A%84%E5%86%99%E5%87%BA%E6%B5%8F%E8%A7%88%E5%99%A8%E5%85%BC%E5%AE%B9%E6%80%A7%E9%97%AE%E9%A2%98.md) [22.垂直上下居中的方法](22.%E5%9E%82%E7%9B%B4%E4%B8%8A%E4%B8%8B%E5%B1%85%E4%B8%AD%E7%9A%84%E6%96%B9%E6%B3%95.md) [23.響應式布局原理](23.%E5%93%8D%E5%BA%94%E5%BC%8F%E5%B8%83%E5%B1%80%E5%8E%9F%E7%90%86.md) [25.清除浮動的方法](25.%E6%B8%85%E9%99%A4%E6%B5%AE%E5%8A%A8%E7%9A%84%E6%96%B9%E6%B3%95.md) [26.http協議和tcp協議](26.http%E5%8D%8F%E8%AE%AE%E5%92%8Ctcp%E5%8D%8F%E8%AE%AE.md) [27.刷新頁面，js請求一般會有哪些地方有緩存處理](27.%E5%88%B7%E6%96%B0%E9%A1%B5%E9%9D%A2%EF%BC%8Cjs%E8%AF%B7%E6%B1%82%E4%B8%80%E8%88%AC%E4%BC%9A%E6%9C%89%E5%93%AA%E4%BA%9B%E5%9C%B0%E6%96%B9%E6%9C%89%E7%BC%93%E5%AD%98%E5%A4%84%E7%90%86.md) [28.如何對網站的文件和資源進行優化](28.%E5%A6%82%E4%BD%95%E5%AF%B9%E7%BD%91%E7%AB%99%E7%9A%84%E6%96%87%E4%BB%B6%E5%92%8C%E8%B5%84%E6%BA%90%E8%BF%9B%E8%A1%8C%E4%BC%98%E5%8C%96.md) [29.你對網頁標準和W3C重要性的理解](29.%E4%BD%A0%E5%AF%B9%E7%BD%91%E9%A1%B5%E6%A0%87%E5%87%86%E5%92%8CW3C%E9%87%8D%E8%A6%81%E6%80%A7%E7%9A%84%E7%90%86%E8%A7%A3.md) [30.Http和https的區別](30.Http%E5%92%8Chttps%E7%9A%84%E5%8C%BA%E5%88%AB.md) [31.data-屬性的作用](32.data-%E5%B1%9E%E6%80%A7%E7%9A%84%E4%BD%9C%E7%94%A8.md) [32.如何讓Chrome瀏覽器顯示小于12px的文字](32.%E5%A6%82%E4%BD%95%E8%AE%A9Chrome%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%BE%E7%A4%BA%E5%B0%8F%E4%BA%8E12px%E7%9A%84%E6%96%87%E5%AD%97.md) [33.哪些操作會引起頁面回流（Reflow）](33.%E5%93%AA%E4%BA%9B%E6%93%8D%E4%BD%9C%E4%BC%9A%E5%BC%95%E8%B5%B7%E9%A1%B5%E9%9D%A2%E5%9B%9E%E6%B5%81%EF%BC%88Reflow%EF%BC%89.md) [34.CSS預處理器的比較less sass](34.CSS%E9%A2%84%E5%A4%84%E7%90%86%E5%99%A8%E7%9A%84%E6%AF%94%E8%BE%83lesssass.md) [35.如何實現頁面每次打開時清除本頁緩存](35.%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E9%A1%B5%E9%9D%A2%E6%AF%8F%E6%AC%A1%E6%89%93%E5%BC%80%E6%97%B6%E6%B8%85%E9%99%A4%E6%9C%AC%E9%A1%B5%E7%BC%93%E5%AD%98.md) [36.什么是Virtual DOM,為何要用Virtual DOM](36.%E4%BB%80%E4%B9%88%E6%98%AFVirtual.md) [37.偽元素和偽類的區別](37.%E4%BC%AA%E5%85%83%E7%B4%A0%E5%92%8C%E4%BC%AA%E7%B1%BB%E7%9A%84%E5%8C%BA%E5%88%AB.md) [38.http的幾種請求方法和區別](38.http%E7%9A%84%E5%87%A0%E7%A7%8D%E8%AF%B7%E6%B1%82%E6%96%B9%E6%B3%95%E5%92%8C%E5%8C%BA%E5%88%AB.md) [39.前端需要注意哪些SEO](39.%E5%89%8D%E7%AB%AF%E9%9C%80%E8%A6%81%E6%B3%A8%E6%84%8F%E5%93%AA%E4%BA%9BSEO.md) [40.<img>的title和alt有什么區別](40.img%E7%9A%84title%E5%92%8Calt%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md) [41.從瀏覽器地址欄輸入url到顯示頁面的步驟](41.%E4%BB%8E%E6%B5%8F%E8%A7%88%E5%99%A8%E5%9C%B0%E5%9D%80%E6%A0%8F%E8%BE%93%E5%85%A5url%E5%88%B0%E6%98%BE%E7%A4%BA%E9%A1%B5%E9%9D%A2%E7%9A%84%E6%AD%A5%E9%AA%A4.md) [42.如何進行網站性能優化](42.%E5%A6%82%E4%BD%95%E8%BF%9B%E8%A1%8C%E7%BD%91%E7%AB%99%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96.md) [43.語義化的理解](43.%E8%AF%AD%E4%B9%89%E5%8C%96%E7%9A%84%E7%90%86%E8%A7%A3.md) [44.HTML5的離線儲存怎么使用，工作原理能不能解釋一下？](44.HTML5%E7%9A%84%E7%A6%BB%E7%BA%BF%E5%82%A8%E5%AD%98%E6%80%8E%E4%B9%88%E4%BD%BF%E7%94%A8%EF%BC%8C%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86%E8%83%BD%E4%B8%8D%E8%83%BD%E8%A7%A3%E9%87%8A%E4%B8%80%E4%B8%8B%EF%BC%9F.md) [45.瀏覽器是怎么對HTML5的離線儲存資源進行管理和加載的呢](45.%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%AF%E6%80%8E%E4%B9%88%E5%AF%B9HTML5%E7%9A%84%E7%A6%BB%E7%BA%BF%E5%82%A8%E5%AD%98%E8%B5%84%E6%BA%90%E8%BF%9B%E8%A1%8C%E7%AE%A1%E7%90%86%E5%92%8C%E5%8A%A0%E8%BD%BD%E7%9A%84%E5%91%A2.md) [46.iframe有那些缺點？](46.iframe%E6%9C%89%E9%82%A3%E4%BA%9B%E7%BC%BA%E7%82%B9%EF%BC%9F.md) [47.WEB標準以及W3C標準是什么?](47.WEB%E6%A0%87%E5%87%86%E4%BB%A5%E5%8F%8AW3C%E6%A0%87%E5%87%86%E6%98%AF%E4%BB%80%E4%B9%88.md) [48.Doctype作用? 嚴格模式與混雜模式如何區分？它們有何意義?](48.Doctype%E4%BD%9C%E7%94%A8%E4%B8%A5%E6%A0%BC%E6%A8%A1%E5%BC%8F%E4%B8%8E%E6%B7%B7%E6%9D%82%E6%A8%A1%E5%BC%8F%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86%EF%BC%9F%E5%AE%83%E4%BB%AC%E6%9C%89%E4%BD%95%E6%84%8F%E4%B9%89.md) [49.HTML全局屬性(global attribute)有哪些](49.HTML%E5%85%A8%E5%B1%80%E5%B1%9E%E6%80%A7globalattribute%E6%9C%89%E5%93%AA%E4%BA%9B.md) [50.Canvas和SVG有什么區別？](50.Canvas%E5%92%8CSVG%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [51.如何在頁面上實現一個圓形的可點擊區域？](51.%E5%A6%82%E4%BD%95%E5%9C%A8%E9%A1%B5%E9%9D%A2%E4%B8%8A%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AA%E5%9C%86%E5%BD%A2%E7%9A%84%E5%8F%AF%E7%82%B9%E5%87%BB%E5%8C%BA%E5%9F%9F%EF%BC%9F.md) [52.網頁驗證碼是干嘛的，是為了解決什么安全問題](52.%E7%BD%91%E9%A1%B5%E9%AA%8C%E8%AF%81%E7%A0%81%E6%98%AF%E5%B9%B2%E5%98%9B%E7%9A%84%EF%BC%8C%E6%98%AF%E4%B8%BA%E4%BA%86%E8%A7%A3%E5%86%B3%E4%BB%80%E4%B9%88%E5%AE%89%E5%85%A8%E9%97%AE%E9%A2%98.md) [53.請描述一下 cookies，sessionStorage 和 localStorage 的區別？](53.%E8%AF%B7%E6%8F%8F%E8%BF%B0%E4%B8%80%E4%B8%8Bcookies%EF%BC%8CsessionStorage%E5%92%8ClocalStorage%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [54. CSS選擇器有哪些？哪些屬性可以繼承？](54.CSS%E9%80%89%E6%8B%A9%E5%99%A8%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F%E5%93%AA%E4%BA%9B%E5%B1%9E%E6%80%A7%E5%8F%AF%E4%BB%A5%E7%BB%A7%E6%89%BF%EF%BC%9F.md) [55.CSS優先級算法如何計算？](55.CSS%E4%BC%98%E5%85%88%E7%BA%A7%E7%AE%97%E6%B3%95%E5%A6%82%E4%BD%95%E8%AE%A1%E7%AE%97%EF%BC%9F.md) [56.CSS3有哪些新特性？](56.CSS3%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B0%E7%89%B9%E6%80%A7%EF%BC%9F.md) [57.請解釋一下CSS3的flexbox（彈性盒布局模型）,以及適用場景？](57.%E8%AF%B7%E8%A7%A3%E9%87%8A%E4%B8%80%E4%B8%8BCSS3%E7%9A%84flexbox%EF%BC%88%E5%BC%B9%E6%80%A7%E7%9B%92%E5%B8%83%E5%B1%80%E6%A8%A1%E5%9E%8B%EF%BC%89,%E4%BB%A5%E5%8F%8A%E9%80%82%E7%94%A8%E5%9C%BA%E6%99%AF%EF%BC%9F.md) [58.用純CSS創建一個三角形的原理是什么？](58.%E7%94%A8%E7%BA%AFCSS%E5%88%9B%E5%BB%BA%E4%B8%80%E4%B8%AA%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E5%8E%9F%E7%90%86%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F.md) [59.常見的兼容性問題？](59.%E5%B8%B8%E8%A7%81%E7%9A%84%E5%85%BC%E5%AE%B9%E6%80%A7%E9%97%AE%E9%A2%98%EF%BC%9F.md) [60.為什么要初始化CSS樣式](60.%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E5%88%9D%E5%A7%8B%E5%8C%96CSS%E6%A0%B7%E5%BC%8F.md) [61.absolute的containing block計算方式跟正常流有什么不同？](61.absolute%E7%9A%84containingblock%E8%AE%A1%E7%AE%97%E6%96%B9%E5%BC%8F%E8%B7%9F%E6%AD%A3%E5%B8%B8%E6%B5%81%E6%9C%89%E4%BB%80%E4%B9%88%E4%B8%8D%E5%90%8C%EF%BC%9F.md) [62.CSS里的visibility屬性有個collapse屬性值？在不同瀏覽器下以后什么區別？](62.CSS%E9%87%8C%E7%9A%84visibility%E5%B1%9E%E6%80%A7%E6%9C%89%E4%B8%AAcollapse%E5%B1%9E%E6%80%A7%E5%80%BC%EF%BC%9F%E5%9C%A8%E4%B8%8D%E5%90%8C%E6%B5%8F%E8%A7%88%E5%99%A8%E4%B8%8B%E4%BB%A5%E5%90%8E%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [63.display:none與visibility：hidden的區別？](63.displaynone%E4%B8%8Evisibility%EF%BC%9Ahidden%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [64.position跟display、overflow、float這些特性相互疊加后會怎么樣？](64.position%E8%B7%9Fdisplay%E3%80%81overflow%E3%80%81float%E8%BF%99%E4%BA%9B%E7%89%B9%E6%80%A7%E7%9B%B8%E4%BA%92%E5%8F%A0%E5%8A%A0%E5%90%8E%E4%BC%9A%E6%80%8E%E4%B9%88%E6%A0%B7%EF%BC%9F.md) 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