前端實現markdown編輯器

Markdown · 發表 2018-12-05 10:12:38

摘要：最終效果如圖所示線上測試地址: https://fangyuanxiaozhan.com/demo/md2html 實現思路第一步: 獲取markdown開源庫showdown showdo...

最終效果如圖所示

線上測試地址: ofollow,noindex">https://fangyuanxiaozhan.com/demo/md2html

實現思路

第一步: 獲取markdown開源庫showdown

showdown的Github地址: https://github.com/showdownjs/showdown
showdown的cdn: https://cdnjs.cloudflare.com/ajax/libs/showdown/1.9.0/showdown.min.js

第二步: 獲取markdown樣式

推薦李笑來老師的markdonw主題: https://gist.github.com/xiaolai/aa190255b7dde302d10208ae247fc9f2

將css插入到頁面中即可

如果你對css的美觀度很有追求, 可以試試下面幾款

少數派主題: https://cdn.sspai.com/sspai.css
Mweb主題: https://cdn.sspai.com/MWeb.css
Github主題: https://github.com/sindresorhus/github-markdown-css
typora主題合集下載: https://theme.typora.io/

實現原始碼:

線上地址(建議pc開啟): https://fangyuanxiaozhan.com/demo/md2html

<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<title>md轉換為html</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/showdown/1.9.0/showdown.min.js"></script>
</head>

<body>
<div style="font-size: 20px;height: 30px; text-align: center;color: #009689; font-weight: bold;">Markdown轉換為HTML的Demo</div>
<style>
.markdown-here-wrapper {
font-size: 16px;
line-height: 1.8em;
letter-spacing: 0.1em;
}

pre,
code {
font-size: 14px;
font-family: Roboto, 'Courier New', Consolas, Inconsolata, Courier, monospace;
margin: auto 5px;
}

code {
white-space: pre-wrap;
border-radius: 2px;
display: inline;
}

pre {
font-size: 15px;
line-height: 1.4em;
display: block;
!important;
}

pre code {
white-space: pre;
overflow: auto;
border-radius: 3px;
padding: 1px 1px;
display: block !important;
}

strong,
b {
color: #BF360C;
}

em,
i {
color: #009688;
}

hr {
border: 1px solid #BF360C;
margin: 1.5em auto;
}

p {
margin: 1.5em 5px !important;
}

table,
pre,
dl,
blockquote,
q,
ul,
ol {
margin: 10px 5px;
}

ul,
ol {
padding-left: 15px;
}

li {
margin: 10px;
}

li p {
margin: 10px 0 !important;
}

ul ul,
ul ol,
ol ul,
ol ol {
margin: 0;
padding-left: 10px;
}

ul {
list-style-type: circle;
}

dl {
padding: 0;
}

dl dt {
font-size: 1em;
font-weight: bold;
font-style: italic;
}

dl dd {
margin: 0 0 10px;
padding: 0 10px;
}

blockquote,
q {
border-left: 2px solid #009688;
padding: 0 10px;
color: #777;
quotes: none;
margin-left: 1em;
}

blockquote::before,
blockquote::after,
q::before,
q::after {
content: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
margin: 20px 0 10px;
padding: 0;
font-style: bold !important;
color: #009688 !important;
text-align: center !important;
margin: 1.5em 5px !important;
padding: 0.5em 1em !important;
}

h1 {
font-size: 24px !important;
border-bottom: 1px solid #ddd !important;
}

h2 {
font-size: 20px !important;
border-bottom: 1px solid #eee !important;
}

h3 {
font-size: 18px;
}

h4 {
font-size: 16px;
}


table {
padding: 0;
border-collapse: collapse;
border-spacing: 0;
font-size: 1em;
font: inherit;
border: 0;
margin: 0 auto;
}

tbody {
margin: 0;
padding: 0;
border: 0;
}

table tr {
border: 0;
border-top: 1px solid #CCC;
background-color: white;
margin: 0;
padding: 0;
}

table tr:nth-child(2n) {
background-color: #F8F8F8;
}

table tr th,
table tr td {
font-size: 16px;
border: 1px solid #CCC;
margin: 0;
padding: 5px 10px;
}

table tr th {
font-weight: bold;
color: #eee;
border: 1px solid #009688;
background-color: #009688;
}
</style>
<style>
#area>table {
width: 100%;
table-layout: fixed;
}

#area table tr td {
margin: 0;
padding: 6px;
border: 0;

}


#md-area {

width: 100%;
height: 600px;
font-size: 18px;
overflow: hidden;
font-weight: bold;
outline: none;
}

#show-area {
height: 600px;
background-color: #FCF6E5;
}

.clearfix:before {
content: "";
display: table;
}
</style>
<script>
function mdSwitch() {
var mdValue = document.getElementById("md-area").value;
var converter = new showdown.Converter();
var html = converter.makeHtml(mdValue);
document.getElementById("show-area").innerHTML = html;
}
</script>
<div id="area">
<table>
<tr>
<td><textarea name="" id="md-area" onkeyup=mdSwitch()></textarea></td>
<td>
<div id="show-area" class="clearfix"></div>
</td>
</tr>
</table>
</div>
</body>

</html>

小結:

記得接觸簡書, 是因為簡書的markdown編輯器很好用
實現一個簡單的markdown編輯器並不是一件難事, 把體驗做好確是非常不容易的
希望簡書能把markdown編輯器的體驗, 越做越好