Chrome Dev tools的几点小技巧
figure:last-child { margin-bottom: 0.5rem; }
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li div { padding-top: 0px; }
blockquote { margin: 1rem 0px; }
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li { margin: 0px; position: relative; }
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#write .footnote-line { white-space: pre-wrap; }
@media print {
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.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: rgb(204, 204, 204); 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 0px 0px; }
.md-math-block { width: 100%; }
.md-math-block:not(:empty)::after { display: none; }
[contenteditable="true"]:active, [contenteditable="true"]:focus { outline: 0px; box-shadow: none; }
.md-task-list-item { position: relative; list-style-type: none; }
.task-list-item.md-task-list-item { padding-left: 0px; }
.md-task-list-item > input { position: absolute; top: 0px; left: 0px; 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: 0px; }
.md-toc-content::after, .md-toc::after { display: none; }
.md-toc-item { display: block; color: rgb(65, 131, 196); }
.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: 0px; 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; }
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.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; }
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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: 0px 0.1em; padding: 0.1em 0.6em; font-size: 0.8em; color: rgb(36, 39, 41); background: rgb(255, 255, 255); border: 1px solid rgb(173, 179, 185); border-radius: 3px; box-shadow: rgba(12, 13, 14, 0.2) 0px 1px 0px, rgb(255, 255, 255) 0px 0px 0px 2px inset; white-space: nowrap; vertical-align: middle; }
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code { text-align: left; vertical-align: initial; }
a.md-print-anchor { white-space: pre !important; border-width: initial !important; border-style: none !important; border-color: initial !important; display: inline-block !important; position: absolute !important; width: 1px !important; right: 0px !important; outline: 0px !important; background: 0px 0px !important; text-decoration: initial !important; text-shadow: initial !important; }
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.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: 0px; 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: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; }
.MathJax_SVG * { transition: none 0s ease 0s; }
.MathJax_SVG_Display svg { vertical-align: middle !important; margin-bottom: 0px !important; margin-top: 0px !important; }
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.md-diagram-panel > svg { max-width: 100%; }
[lang="mermaid"] svg, [lang="flow"] svg { max-width: 100%; height: auto; }
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table tr th { border-bottom: 0px; }
video { max-width: 100%; display: block; margin: 0px auto; }
iframe { max-width: 100%; width: 100%; border: none; }
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:root { --control-text-color: #777; }
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table > thead > tr > th { vertical-align: bottom; border-bottom: 2px solid rgb(51, 51, 51); }
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: 0px; }
table > tbody + tbody { border-top: 2px solid rgb(51, 51, 51); }
p { font-weight: 300; line-height: 1.5; }
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blockquote footer { font-size: 0.85rem; font-style: normal; background-color: rgb(255, 255, 255); color: rgb(122, 122, 122); border-color: transparent; }
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.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-width: 0px 0px 3px 3px; border-bottom-style: solid; border-left-style: solid; border-bottom-color: rgb(255, 255, 255); border-left-color: rgb(255, 255, 255); border-image: initial; border-top-style: initial; border-top-color: initial; border-right-style: initial; border-right-color: initial; content: " "; opacity: 0; }
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.cm-s-typora-default .cm-atom, .cm-s-typora-default .cm-number { color: rgb(119, 119, 119); }
.md-diagram-panel { margin-top: 24px; margin-left: -1.2em; }
.md-mathjax-midline { background: rgb(250, 250, 250); }
.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: rgb(229, 229, 229); }
-->
呼出快捷指令面板:
cmd + shift + p在
Devtools界面下,键入cmd + shift + p`将其激活,然后开始在栏中键入要查找的命令或输入?号以查看所有可用命令 .如下图:其中Open file,Go to line,Go to symbol对于快速打开文件和定位文件位置还是节省了不少时间.
1.性能监视器:> performance monitor

本地覆盖:
local overrides感觉这个特性是超级棒。 使用我们自己的本地资源覆盖网页所使用的资源。 多说无益,直接举个例子大家就明白了。
大家看到了吧,我们可以把网络资源直接和本地资源映射,再次刷新网页,取得资源文件就是本地的了。这种对js、css等文件批量修改调试特别有用。
local overrides还可以模拟Mock数据,如果后端API还不OK或者不想频繁的发布后台API。这个功能是相 当有用,不过听说还不支持XHR请求。
控制台内置指令
私以为如果网页里面如果没有引用jquery是不是就不能使用$这样的语法了,nonono
$(selector, [startNode]):单选择器可以选择元素并触发元素事件.

$$(选择器,[startNode]):全选择器
$x(path, [startNode]):xpath选择器
$x(path)返回与给定xpath表达式匹配的DOM元素数组 .
$x('//div'):返回页面上的所有div元素。
getEventListeners(object):获取指定对象的绑定事件
Console...的多种用法
1.变量打印:%s、%o、%d、和%c
例如: const text = "文本1"
console.log(打印${text})
//结果为打印文本1
2.布尔断言打印:console.assert()
做前端调试时很有用。
3.console.table()内容可以以表格的形式输出.

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