文字记录或者复制粘贴比较方便，可以直接保存为 html 文件，再打开时，可以继续编辑。
本人代码：
内容如下（方便查看）：
data:text/html, <html contenteditable> <title>TextEditor</title> <style type=text/css>body{ margin: 0 auto; font-family: "Times New Roman", KaiTi, "ubuntu", "Tahoma", "Microsoft YaHei", arial,sans-serif; color: #444444; line-height: 1.5; padding: 30px; } img { max-width: 100%; } @media screen and (min-width: 1000px) { body { width: 842px; margin: 10px auto; } } h1, h2, h3, h4 { color: #111111; font-weight: 400; margin-top: 1em; } h1, h2, h3, h4, h5 { font-family: "Times New Roman", KaiTi, Georgia, Palatino, serif; } h1, h2, h3, h4, h5, dl{ margin-bottom: 16px; padding: 0; } p { margin-top: 8px; margin-bottom: 3px; } p.ex{ color:rgb(0,0,255); font-size:20px; font-family:"Times New Roman"; } h1 { font-size: 48px; line-height: 1.5; } h2 { font-size: 36px; line-height: 1.5; } h1, h2 { border-bottom: 1px solid #EFEAEA; padding-bottom: 10px; } h3 { font-size: 24px; line-height: 1.5; } h4 { font-size: 21px; line-height: 1.5; } h5 { font-size: 18px; line-height: 1.5; } a { color: #0099ff; margin: 0 2px; padding: 0; vertical-align: baseline; text-decoration: none; } a:hover { text-decoration: none; color: #ff6600; } a:visited { /color: purple;/ } ul, ol { padding: 0; padding-left: 18px; margin: 0; } li { line-height: 1.5; } p, ul, ol { font-size: 16px; line-height: 1.5; } ol ol, ul ol { list-style-type: lower-roman; } code, pre { font-family: Consolas, Monaco, Andale Mono, monospace; background-color:#f7f7f7; color: inherit; } code { font-family: Consolas, Monaco, Andale Mono, monospace; margin: 0 2px; } code.has-jax { font: inherit; font-size: 100%; background: inherit; border: inherit; } pre { font-family: Consolas, Monaco, Andale Mono, monospace; line-height: 1.5; overflow: auto; padding: 6px 10px; border-left: 5px solid #6CE26C; } pre > code { font-family: Consolas, Monaco, Andale Mono, monospace; border: 0; display: inline; max-width: initial; padding: 0; margin: 0; overflow: initial; line-height: 1.5; font-size: .95em; white-space: pre; background: 0 0; } code { color: #666555; } aside { display: block; float: right; width: 390px; } blockquote { border-left:.5em solid #eee; padding: 0 0 0 2em; margin-left:0; } blockquote cite { font-size:14px; line-height:1.5; color:#bfbfbf; } blockquote cite:before { content: '\2014 \00A0'; } blockquote p { color: #666; } hr { text-align: left; color: #999; height: 2px; padding: 0; margin: 16px 0; background-color: #e7e7e7; border: 0 none; } dl { padding: 0; } dl dt { padding: 10px 0; margin-top: 16px; font-size: 1em; font-style: italic; font-weight: bold; } dl dd { padding: 0 16px; margin-bottom: 16px; } dd { margin-left: 0; } table { border-collapse: collapse; / IE7 and lower */ border-spacing: 0; width: 100%; } table { border: solid #ccc 1px; } table thead { background: #f7f7f7; } table thead tr:hover { background: #f7f7f7 } table tr:hover { background: #fbf8e9; -o-transition: all 0.1s ease-in-out; -webkit-transition: all 0.1s ease-in-out; -moz-transition: all 0.1s ease-in-out; -ms-transition: all 0.1s ease-in-out; transition: all 0.1s ease-in-out; } table td, .table th { border-left: 1px solid #ccc; border-top: 1px solid #ccc; padding: 10px; text-align: left; } table th { border-top: none; text-shadow: 0 1px 0 rgba(255,255,255,.5); padding: 5px; border-left: 1px solid #ccc; } table td:first-child, table th:first-child { border-left: none; }</style>
一行代码：
data:text/html, <html contenteditable> <title>TextEditor</title> <style type=text/css>body{ margin: 0 auto; font-family: "Times New Roman", KaiTi, "ubuntu", "Tahoma", "Microsoft YaHei", arial,sans-serif; color: #444444; line-height: 1.5; padding: 30px; } img { max-width: 100%; } @media screen and (min-width: 1000px) { body { width: 842px; margin: 10px auto; } } h1, h2, h3, h4 { color: #111111; font-weight: 400; margin-top: 1em; } h1, h2, h3, h4, h5 { font-family: "Times New Roman", KaiTi, Georgia, Palatino, serif; } h1, h2, h3, h4, h5, dl{ margin-bottom: 16px; padding: 0; } p { margin-top: 8px; margin-bottom: 3px; } p.ex{ color:rgb(0,0,255); font-size:20px; font-family:"Times New Roman"; } h1 { font-size: 48px; line-height: 1.5; } h2 { font-size: 36px; line-height: 1.5; } h1, h2 { border-bottom: 1px solid #EFEAEA; padding-bottom: 10px; } h3 { font-size: 24px; line-height: 1.5; } h4 { font-size: 21px; line-height: 1.5; } h5 { font-size: 18px; line-height: 1.5; } a { color: #0099ff; margin: 0 2px; padding: 0; vertical-align: baseline; text-decoration: none; } a:hover { text-decoration: none; color: #ff6600; } a:visited { /*color: purple;*/ } ul, ol { padding: 0; padding-left: 18px; margin: 0; } li { line-height: 1.5; } p, ul, ol { font-size: 16px; line-height: 1.5; } ol ol, ul ol { list-style-type: lower-roman; } code, pre { font-family: Consolas, Monaco, Andale Mono, monospace; background-color:#f7f7f7; color: inherit; } code { font-family: Consolas, Monaco, Andale Mono, monospace; margin: 0 2px; } code.has-jax { font: inherit; font-size: 100%; background: inherit; border: inherit; } pre { font-family: Consolas, Monaco, Andale Mono, monospace; line-height: 1.5; overflow: auto; padding: 6px 10px; border-left: 5px solid #6CE26C; } pre > code { font-family: Consolas, Monaco, Andale Mono, monospace; border: 0; display: inline; max-width: initial; padding: 0; margin: 0; overflow: initial; line-height: 1.5; font-size: .95em; white-space: pre; background: 0 0; } code { color: #666555; } aside { display: block; float: right; width: 390px; } blockquote { border-left:.5em solid #eee; padding: 0 0 0 2em; margin-left:0; } blockquote cite { font-size:14px; line-height:1.5; color:#bfbfbf; } blockquote cite:before { content: '\2014 \00A0'; } blockquote p { color: #666; } hr { text-align: left; color: #999; height: 2px; padding: 0; margin: 16px 0; background-color: #e7e7e7; border: 0 none; } dl { padding: 0; } dl dt { padding: 10px 0; margin-top: 16px; font-size: 1em; font-style: italic; font-weight: bold; } dl dd { padding: 0 16px; margin-bottom: 16px; } dd { margin-left: 0; } table { *border-collapse: collapse; /* IE7 and lower */ border-spacing: 0; width: 100%; } table { border: solid #ccc 1px; } table thead { background: #f7f7f7; } table thead tr:hover { background: #f7f7f7 } table tr:hover { background: #fbf8e9; -o-transition: all 0.1s ease-in-out; -webkit-transition: all 0.1s ease-in-out; -moz-transition: all 0.1s ease-in-out; -ms-transition: all 0.1s ease-in-out; transition: all 0.1s ease-in-out; } table td, .table th { border-left: 1px solid #ccc; border-top: 1px solid #ccc; padding: 10px; text-align: left; } table th { border-top: none; text-shadow: 0 1px 0 rgba(255,255,255,.5); padding: 5px; border-left: 1px solid #ccc; } table td:first-child, table th:first-child { border-left: none; }</style>
