<style>html { overflow-x: initial !important } :root { --bg-color: #ffffff; --text-color: #333333; --select-text-bg-color: #B5D6FC; --select-text-font-color: auto; --monospace: "Lucida Console",Consolas,"Courier",monospace } html { font-size: 14px; background-color: var(--bg-color); color: var(--text-color); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased } body { margin: 0; padding: 0; height: auto; bottom: 0; top: 0; left: 0; right: 0; font-size: 1rem; line-height: 1.42857; overflow-x: hidden; tab-size: 4 } iframe { margin: auto } a.url { word-break: break-all } a:active, a:hover { outline: 0 } .in-text-selection, ::selection { text-shadow: none; background: var(--select-text-bg-color); color: var(--select-text-font-color) } #write { margin: 0 auto; height: auto; width: inherit; word-break: normal; overflow-wrap: break-word; position: relative; white-space: normal; overflow-x: visible; padding-top: 40px } #write.first-line-indent p { text-indent: 2em } #write.first-line-indent li p, #write.first-line-indent p * { text-indent: 0 } #write.first-line-indent li { margin-left: 2em } .for-image #write { padding-left: 8px; padding-right: 8px } body.typora-export { padding-left: 30px; padding-right: 30px } .typora-export .footnote-line, .typora-export li, .typora-export p { white-space: pre-wrap } @media screen and (max-width: 500px) { body.typora-export { padding-left: 0; padding-right: 0 } #write { padding-left: 20px; padding-right: 20px } .CodeMirror-sizer { margin-left: 0 !important } .CodeMirror-gutters { display: none !important } } #write li>figure:last-child { margin-bottom: 0.5rem } #write ol, #write ul { position: relative } img { max-width: 100%; vertical-align: middle } button, input, select, textarea { color: inherit } input[type="checkbox"], input[type="radio"] { line-height: normal; padding: 0 } *, ::after, ::before { box-sizing: border-box } #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p, #write pre { width: inherit } #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p { position: relative } p { line-height: inherit } h1, h2, h3, h4, h5, h6 { break-after: avoid-page; break-inside: avoid; orphans: 2 } p { orphans: 4 } h1 { font-size: 2rem } h2 { font-size: 1.8rem } h3 { font-size: 1.6rem } h4 { font-size: 1.4rem } h5 { font-size: 1.2rem } h6 { font-size: 1rem } .md-math-block, .md-rawblock, h1, h2, h3, h4, h5, h6, p { margin-top: 1rem; margin-bottom: 1rem } .hidden { display: none } .md-blockmeta { color: rgba(204, 204, 204, 1); font-weight: 700; font-style: italic } a { cursor: pointer } sup.md-footnote { padding: 2px 4px; background-color: rgba(238, 238, 238, 0.7); color: rgba(85, 85, 85, 1); border-radius: 4px; cursor: pointer } sup.md-footnote a, sup.md-footnote a:hover { color: inherit; text-transform: inherit } #write input[type="checkbox"] { cursor: pointer; width: inherit; height: inherit } figure { overflow-x: auto; margin: 1.2em 0; max-width: calc(100% + 16px); padding: 0 } figure>table { margin: 0 !important } tr { break-inside: avoid; break-after: auto } thead { display: table-header-group } table { border-collapse: collapse; border-spacing: 0; width: 100%; overflow: auto; break-inside: auto; text-align: left } table.md-table td { min-width: 32px } .CodeMirror-gutters { border-right: 0; background-color: inherit } .CodeMirror-linenumber { user-select: none } .CodeMirror { text-align: left } .CodeMirror-placeholder { opacity: 0.3 } .CodeMirror pre { padding: 0 4px } .CodeMirror-lines { padding: 0 } div.hr:focus { cursor: none } #write pre { white-space: pre-wrap } #write.fences-no-line-wrapping pre { white-space: pre } #write pre.ty-contain-cm { white-space: normal } .CodeMirror-gutters { margin-right: 4px } .md-fences { font-size: 0.9rem; display: block; break-inside: avoid; text-align: left; overflow: visible; white-space: pre; position: relative !important } .md-diagram-panel { width: 100%; margin-top: 10px; text-align: center; padding-top: 0; padding-bottom: 8px; overflow-x: auto } #write .md-fences.mock-cm { white-space: pre-wrap } .md-fences.md-fences-with-lineno { padding-left: 0 } #write.fences-no-line-wrapping .md-fences.mock-cm { white-space: pre; overflow-x: auto } .md-fences.mock-cm.md-fences-with-lineno { padding-left: 8px } .CodeMirror-line, twitterwidget { break-inside: avoid } .footnotes { opacity: 0.8; font-size: 0.9rem; margin-top: 1em; margin-bottom: 1em } .footnotes+.footnotes { margin-top: 0 } .md-reset { margin: 0; padding: 0; border: 0; outline: 0; vertical-align: top; background: left top; text-decoration: none; text-shadow: none; float: none; position: static; width: auto; height: auto; white-space: nowrap; cursor: inherit; -webkit-tap-highlight-color: transparent; line-height: normal; font-weight: 400; text-align: left; box-sizing: content-box; direction: ltr } li div { padding-top: 0 } blockquote { margin: 1rem 0 } li .mathjax-block, li p { margin: 0.5rem 0 } li { margin: 0; position: relative } blockquote>:last-child { margin-bottom: 0 } blockquote>:first-child, li>:first-child { margin-top: 0 } .footnotes-area { color: rgba(136, 136, 136, 1); margin-top: 0.714rem; padding-bottom: 0.143rem; white-space: normal } #write .footnote-line { white-space: pre-wrap } @media print { body, html { border: 1px solid rgba(0, 0, 0, 0); height: 99%; break-after: avoid; break-before: avoid } #write { margin-top: 0; padding-top: 0; border-color: rgba(0, 0, 0, 0) !important } .typora-export * { -webkit-print-color-adjust: exact } html.blink-to-pdf { font-size: 13px } .typora-export #write { padding-left: 32px; padding-right: 32px; padding-bottom: 0; break-after: avoid } .typora-export #write::after { height: 0 } } .footnote-line { margin-top: 0.714em; font-size: 0.7em } a img, img a { cursor: pointer } pre.md-meta-block { font-size: 0.8rem; min-height: 0.8rem; white-space: pre-wrap; background: rgba(204, 204, 204, 1); display: block; overflow-x: hidden } p>.md-image:only-child:not(.md-img-error) img, p>img:only-child { display: block; margin: auto } p>.md-image:only-child { display: inline-block; width: 100% } #write .MathJax_Display { margin: 0.8em 0 0 } .md-math-block { width: 100% } .md-math-block:not(:empty)::after { display: none } [contenteditable="true"]:active, [contenteditable="true"]:focus { outline: 0; box-shadow: none } .md-task-list-item { position: relative; list-style-type: none } .task-list-item.md-task-list-item { padding-left: 0 } .md-task-list-item>input { position: absolute; top: 0; left: 0; margin-left: -1.2em; margin-top: calc(1em - 10px); border: none } .math { font-size: 1rem } .md-toc { min-height: 3.58rem; position: relative; font-size: 0.9rem; border-radius: 10px } .md-toc-content { position: relative; margin-left: 0 } .md-toc-content::after, .md-toc::after { display: none } .md-toc-item { display: block; color: rgba(65, 131, 196, 1) } .md-toc-item a { text-decoration: none } .md-toc-inner:hover { text-decoration: underline } .md-toc-inner { display: inline-block; cursor: pointer } .md-toc-h1 .md-toc-inner { margin-left: 0; font-weight: 700 } .md-toc-h2 .md-toc-inner { margin-left: 2em } .md-toc-h3 .md-toc-inner { margin-left: 4em } .md-toc-h4 .md-toc-inner { margin-left: 6em } .md-toc-h5 .md-toc-inner { margin-left: 8em } .md-toc-h6 .md-toc-inner { margin-left: 10em } @media screen and (max-width: 48em) { .md-toc-h3 .md-toc-inner { margin-left: 3.5em } .md-toc-h4 .md-toc-inner { margin-left: 5em } .md-toc-h5 .md-toc-inner { margin-left: 6.5em } .md-toc-h6 .md-toc-inner { margin-left: 8em } } a.md-toc-inner { font-size: inherit; font-style: inherit; font-weight: inherit; line-height: inherit } .footnote-line a:not(.reversefootnote) { color: inherit } .md-attr { display: none } .md-fn-count::after { content: "." } code, pre, samp, tt { font-family: var(--monospace) } kbd { margin: 0 0.1em; padding: 0.1em 0.6em; font-size: 0.8em; color: rgba(36, 39, 41, 1); background: rgba(255, 255, 255, 1); border: 1px solid rgba(173, 179, 185, 1); border-radius: 3px; box-shadow: 0 1px rgba(12, 13, 14, 0.2), inset 0 0 2px rgba(255, 255, 255, 1); white-space: nowrap; vertical-align: middle } .md-comment { color: rgba(162, 127, 3, 1); opacity: 0.8; font-family: var(--monospace) } code { text-align: left; vertical-align: initial } a.md-print-anchor { white-space: pre !important; border-style: none !important; display: inline-block !important; position: absolute !important; width: 1px !important; right: 0 !important; outline: 0 !important; background: left top !important; text-shadow: initial !important } .md-inline-math .MathJax_SVG .noError { display: none !important } .html-for-mac .inline-math-svg .MathJax_SVG { vertical-align: 0.2px } .md-math-block .MathJax_SVG_Display { text-align: center; margin: 0; position: relative; text-indent: 0; max-width: none; max-height: none; min-height: 0; min-width: 100%; width: auto; overflow-y: hidden; display: block !important } .MathJax_SVG_Display, .md-inline-math .MathJax_SVG_Display { width: auto; display: inline-block !important } .MathJax_SVG .MJX-monospace { font-family: var(--monospace) } .MathJax_SVG .MJX-sans-serif { font-family: sans-serif } .MathJax_SVG { display: inline; font-style: normal; font-weight: 400; line-height: normal; zoom: 90%; text-indent: 0; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0; min-height: 0; border: 0; padding: 0; margin: 0 } .MathJax_SVG * { } .MathJax_SVG_Display svg { vertical-align: middle !important; margin-bottom: 0 !important; margin-top: 0 !important } .os-windows.monocolor-emoji .md-emoji { font-family: "Segoe UI Symbol", sans-serif } .md-diagram-panel>svg { max-width: 100% } [lang="mermaid"] svg, [lang="flow"] svg { max-width: 100%; height: auto } [lang="mermaid"] .node text { font-size: 1rem } table tr th { border-bottom: 0 } video { max-width: 100%; display: block; margin: 0 auto } iframe { max-width: 100%; width: 100%; border: none } .highlight td, .highlight tr { border: 0 } :root { --control-text-color: #777 } h1, .h1, .f1 { font-size: 2rem; line-height: 2.5rem } h2, .h2, .f2 { font-size: 1.5rem; line-height: 2rem } h3, .h3, .f3 { font-size: 1.25rem; line-height: 1.5rem } p, .p, .f4, h4, h5, h6, dl, ol, ul, pre[cid], div[cid], #typora-source { font-size: 1.125rem; line-height: 1.5rem } h4 { font-size: 1.13rem } body { font-family: Merriweather, "PT Serif", Georgia, "Times New Roman", STSong, serif; line-height: 1.5rem; font-weight: 400 } #write { max-width: 914px; color: rgba(51, 51, 51, 1) } img { width: auto; max-width: 100% } body { font-size: 1.5rem; box-sizing: border-box } .ty-table-edit { background: rgba(237, 237, 237, 1) } table { width: 100%; font-size: 1.125rem } table>thead>tr>th, table>thead>tr>td, table>tbody>tr>th, table>tbody>tr>td, table>tfoot>tr>th, table>tfoot>tr>td { padding: 12px; line-height: 1.2; vertical-align: top; border-top: 1px solid rgba(51, 51, 51, 1) } table>thead>tr>th { vertical-align: bottom; border-bottom: 2px solid rgba(51, 51, 51, 1) } table>caption+thead>tr:first-child>th, table>caption+thead>tr:first-child>td, table>colgroup+thead>tr:first-child>th, table>colgroup+thead>tr:first-child>td, table>thead:first-child>tr:first-child>th, table>thead:first-child>tr:first-child>td { border-top: 0 } table>tbody+tbody { border-top: 2px solid rgba(51, 51, 51, 1) } p { font-weight: 300; line-height: 1.5 } abbr { border-bottom: 1px dotted rgba(0, 0, 0, 1); cursor: help } pre, code { font-family: Menlo, Monaco, "Courier New", monospace } code, .md-fences { color: rgba(122, 122, 122, 1) } .md-fences { padding: 0.5rem 1.125em; margin-bottom: 0.88em; font-size: 1rem; border: 1px solid rgba(122, 122, 122, 1) } blockquote { padding: 1.33em; font-style: italic; border-left: 5px solid rgba(122, 122, 122, 1); color: rgba(85, 85, 85, 1) } blockquote em { color: rgba(0, 0, 0, 1) } blockquote footer { font-size: 0.85rem; font-style: normal; background-color: rgba(255, 255, 255, 1); color: rgba(122, 122, 122, 1); border-color: rgba(0, 0, 0, 0) } h1, .h1, h2, .h2, h3, .h3, h4, .h4, h5, .h5, h6, .h6 { font-family: Lato, "Helvetica Neue", Helvetica, sans-serif; font-weight: bold; line-height: 1.2; margin: 1em 0 0.5em } @media screen and (min-width: 48em) { .h1, h1 { font-size: 3.25rem } .h2, h2 { font-size: 2.298rem } .h3, h3 { font-size: 1.625rem } .h4, h4 { font-size: 1.3rem } #write>h4.md-focus::before, #write>h5.md-focus::before, #write>h6.md-focus::before { top: 1px } .p, p, li { font-size: 1.25rem; line-height: 1.8 } table { font-size: 1.25rem } } @media (max-width: 48em) { blockquote { margin-left: 1rem; margin-right: 0; padding: 0.5em } .h1, h1 { font-size: 2.827rem } .h2, h2 { font-size: 1.999rem } .h3, h3 { font-size: 1.413rem } .h4, h4 { font-size: 1.3rem } } @media screen and (min-width: 64em) { .h1, h1 { font-size: 4.498rem } .h2, h2 { font-size: 2.29rem } .h3, h3 { font-size: 1.9rem } .h4, h4 { font-size: 1.591rem } #write>h4.md-focus::before { top: 4px } } a { color: rgba(70, 63, 92, 1); text-decoration: underline } #write { padding-top: 2rem } #write pre.md-meta-block { min-height: 35px; padding: 2000px 1em 10px 0; white-space: pre; border-top: 0; border-right: 30px solid rgba(248, 248, 248, 1); border-bottom: 0; border-left: 30px solid rgba(248, 248, 248, 1); width: 100vw; max-width: calc(100% + 60px); margin-left: -30px; margin-bottom: 2em; margin-top: -2010px; line-height: 1.5em; color: rgba(122, 122, 122, 1); background-color: rgba(250, 250, 250, 1); font-family: Lato, "Helvetica Neue", Helvetica, sans-serif; font-weight: 300; clear: both; font-size: 1.125rem } .md-image>.md-meta { color: rgba(70, 63, 92, 1) } .footnotes { font-size: 1.1rem } .md-tag { font-family: Lato, "Helvetica Neue", Helvetica, sans-serif } .code-tooltip { background: rgba(255, 255, 255, 1) } .code-tooltip-content { font-size: 1.1rem } .task-list { padding-left: 0 } .md-task-list-item { padding-left: 34px } .md-task-list-item>input { width: 1.25rem; height: 1.25rem; display: block; -webkit-appearance: initial; top: -0.2rem; margin-left: -1.6em; margin-top: calc(1rem - 7px); border: none } .md-task-list-item>input:focus { outline: none; box-shadow: none } .md-task-list-item>input::before { border: 1px solid rgba(85, 85, 85, 1); border-radius: 1.5rem; width: 1.5rem; height: 1.5rem; background: rgba(255, 255, 255, 1); content: " "; transition: background-color 200ms ease-in-out 0s; display: block } .md-task-list-item>input:checked::before, .md-task-list-item>input[checked]::before { background: rgba(51, 51, 51, 1); border-width: 2px; display: inline-block; transition: background-color 200ms ease-in-out 0s } .md-task-list-item>input:checked::after, .md-task-list-item>input[checked]::after { opacity: 1 } .md-task-list-item>input::after { transition: opacity 0.05s ease-in-out 0s; transform: rotate(-45deg); position: absolute; top: 0.4375rem; left: 0.28125rem; width: 0.9375rem; height: 0.5rem; border-top: 0; border-right: 0; border-bottom: 3px solid rgba(255, 255, 255, 1); border-left: 3px solid rgba(255, 255, 255, 1); content: " "; opacity: 0 } .md-tag { color: inherit } .md-toc:focus .md-toc-content { margin-top: 19px } #typora-sidebar { font-size: 1rem !important } .html-for-mac #typora-sidebar { background-color: rgba(255, 255, 255, 1) } .outline-content li, .outline-content ul { font-size: 1rem !important } .outline-title { line-height: inherit; margin-top: 10px } .outline-expander { width: 18px } .outline-expander::before { content: "+"; font-family: inherit; color: rgba(108, 108, 108, 1); font-size: 1.5rem; top: 0.1rem } .outline-expander:hover::before { content: "+" } .outline-item-open>.outline-item>.outline-expander::before { content: "-" } #typora-source { font-family: Courier, monospace; color: rgba(106, 106, 106, 1) } .os-windows #typora-source { font-family: inherit } .cm-s-typora-default .cm-header, .cm-s-typora-default .cm-property, .CodeMirror.cm-s-typora-default div.CodeMirror-cursor { color: rgba(66, 139, 202, 1) } .cm-s-typora-default .cm-atom, .cm-s-typora-default .cm-number { color: rgba(119, 119, 119, 1) } .md-diagram-panel { margin-top: 24px; margin-left: -1.2em } .md-mathjax-midline { background: rgba(250, 250, 250, 1) } .enable-diagrams pre.md-fences[lang="sequence"] .code-tooltip, .enable-diagrams pre.md-fences[lang="flow"] .code-tooltip, .enable-diagrams pre.md-fences[lang="mermaid"] .code-tooltip { bottom: -3.4em } .dropdown-menu .divider { border-color: rgba(229, 229, 229, 1) }</style>
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呼出快捷指令面板：
cmd + shift + p在
Devtools界面下，鍵入cmd + shift + p`將其激活，然后開始在欄中鍵入要查找的命令或輸入？號以查看所有可用命令 .如下圖:其中Open file,Go to line,Go to symbol對于快速打開檔案和定位檔案位置還是節省了不少時間.
1.性能監視器：> performance monitor
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本地覆寫：
local overrides感覺這個特性是超級棒， 使用我們自己的本地資源覆寫網頁所使用的資源， 多說無益，直接舉個例子大家就明白了，
大家看到了吧，我們可以把網路資源直接和本地資源映射，再次重繪網頁，取得資源檔案就是本地的了，這種對js、css等檔案批量修改除錯特別有用，
local overrides還可以模擬Mock資料，如果后端API還不OK或者不想頻繁的發布后臺API，這個功能是相 當有用，不過聽說還不支持XHR請求，
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控制臺內置指令
私以為如果網頁里面如果沒有參考jquery是不是就不能使用$這樣的語法了,nonono
$(selector, [startNode])：單選擇器可以選擇元素并觸發元素事件.
$$（選擇器，[startNode]）：全選擇器
$x(path, [startNode])：xpath選擇器
$x(path)回傳與給定xpath運算式匹配的DOM元素陣列 .
$x('//div'):回傳頁面上的所有div元素，
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getEventListeners（object）:獲取指定物件的系結事件
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Console...的多種用法
1.變數列印：%s、%o、%d、和%c
例如： const text = "文本1"
console.log(列印${text})
//結果為列印文本1
2.布爾斷言列印：console.assert()
做前端除錯時很有用，
3.console.table()內容可以以表格的形式輸出.
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/117311.html
標籤：Html/Css
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