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怎么使用模板建设网站,武汉百度开户代理,如何自己做网站优化,电脑做服务器建网站markdown-it能够将markdown语法的内容转换为html内容，这样我们使用markdown语法写的笔记，就可以转换作为网页使用了 Markdown语法 Markdown语法图文全面详解(10分钟学会) 基础使用 安装markdown-it npm install markdown-it --save使用markdown-it …

markdown-it能够将markdown语法的内容转换为html内容，这样我们使用markdown语法写的笔记，就可以转换作为网页使用了

Markdown语法

Markdown语法图文全面详解(10分钟学会)

基础使用

安装markdown-it

npm install markdown-it --save

使用markdown-it

可以看到，使用markdown-it，我们把markdown语法的内容转为了html内容。我们发现，md内容中标记的java语言代码会包裹再pre code标签中，并且再highlight函数中回调。。
在这里插入图片描述

转化的html文档

在这里插入图片描述

<style lang="scss">.container {width: 600px;margin: 10px auto;textarea {outline: none;}}
</style><template><div class="container"><textarea v-model="mdContent" rows="6" style="width: 100%;"></textarea><div v-html="htmlContent"></div></div>
</template><script>
import MarkdownIt from 'markdown-it'
const MarkdownIt2 = require('markdown-it')let md1 = new MarkdownIt()
let md2 = new MarkdownIt2()
console.log(md1);
console.log(md2);console.log(md1.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */
console.log(md2.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */const md = new MarkdownIt({html: true,linkify: true,typographer: true,breaks: true,highlight: function(str, lang) {console.log('str->',str,'lang->',lang);}
})export default {name: 'md2Html',data() {return {mdContent:'',htmlContent:'',}},watch: {mdContent(newVal,oldVal) {this.htmlContent = md.render(newVal)}}
}
</script>

代码简单高亮1

根据我们前面学到的highlight.js的用法，我们可以这么做，在编辑的时候实时高亮，就是在md转完html，并且渲染完成后，在$nextTick中，高亮对应的html就可以了。
在这里插入图片描述

<style lang="scss">.container {width: 600px;margin: 10px auto;textarea {outline: none;}}
</style><template><div class="container"><textarea v-model="mdContent" rows="6" style="width: 100%;"></textarea><div v-html="htmlContent"></div></div>
</template><script>
import MarkdownIt from 'markdown-it'
const MarkdownIt2 = require('markdown-it')import hljs from 'highlight.js'
import 'highlight.js/styles/atom-one-dark.css'let md1 = new MarkdownIt()
let md2 = new MarkdownIt2()
console.log(md1);
console.log(md2);console.log(md1.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */
console.log(md2.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */const md = new MarkdownIt({html: true,linkify: true,typographer: true,breaks: true,highlight: function(str, lang) {console.log('str->',str,'lang->',lang);}
})export default {name: 'md2Html',data() {return {mdContent:'',htmlContent:'',}},watch: {mdContent(newVal,oldVal) {this.htmlContent = md.render(newVal)this.$nextTick(()=>{console.log(333);document.querySelectorAll('pre code').forEach((el) => {hljs.highlightElement(el);});})}}
}
</script>

代码高亮2（学习风宇blog）

添加功能：

  • 代码高亮
  • 行号
  • 一键复制
    在这里插入图片描述
<style lang="scss">
@import url('https://fonts.font.im/css?family=Roboto');* {font-family: 'Roboto';
}.container {width: 600px;margin: 10px auto;textarea {outline: none;}
}/* 行号样式 */
.line-numbers-rows {position: absolute;pointer-events: none;top: 18px;font-size: 100%;left: 0.5em;width: 2.1em;letter-spacing: -1px;border-right: 1px solid #0e0f12;-webkit-user-select: none;-moz-user-select: none;user-select: none;background-color: #282c34;
}pre {position: relative;padding-left: 2.6em;line-height: 1.3em;
}.line-numbers-rows>span {display: block;counter-increment: linenumber;
}pre {background-color: #282c34;border-radius: 8px;
}pre code {border-radius: 8px;
}.line-numbers-rows>span:before {content: counter(linenumber);color: #999;display: block;padding-right: 0.8em;text-align: right;
}.language-name {position: absolute;top: 9px;color: #999999;right: 43px;font-size: 0.8em;-webkit-user-select: none;-moz-user-select: none;user-select: none;
}.copy-btn {position: absolute;right: 8px;top: 8px;background-color: #525252;border: none;padding: 3px 6px;border-radius: 3px;color: #cccccc;cursor: pointer;display: none;
}pre:hover .copy-btn {display: block;
}.copy-textarea {position: absolute;left: -9999px;top: -9999px;
}
</style><template><div class="container"><textarea v-model="mdContent" rows="6" style="width: 100%;"></textarea><div v-html="htmlContent"></div></div>
</template><script>
import { getArticle } from '@/api/articleApi'import ClipboardJS from 'clipboard'
console.log(ClipboardJS);import MarkdownIt from 'markdown-it'
const MarkdownIt2 = require('markdown-it')import hljs from 'highlight.js'
import 'highlight.js/styles/atom-one-dark.css'let md1 = new MarkdownIt()
let md2 = new MarkdownIt2()
console.log(md1);
console.log(md2);console.log(md1.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */
console.log(md2.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */const md = new MarkdownIt({html: true,linkify: true,typographer: true,breaks: true,highlight: function (str, lang) {/* str-> @Configuration@EnableWebMvc@EnableGlobalMethodSecurity(prePostEnabled = true) // 因为要控制controller中的方法访问，所以此注解要加到子容器中@ComponentScan(basePackages = "com.zzhua.controller",excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,classes = Service.class)})public class MyWebConfig implements WebMvcConfigurer {@Overridepublic void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {// 开启静态资源访问configurer.enable();}}lang-> java {name: 'Java', aliases: Array(1), keywords: {…}, illegal: /<\/|#/, contains: Array(23), …}*/console.log('str->', str, 'lang->', lang, hljs.getLanguage('java'));/* <span class="hljs-meta">@Configuration</span><span class="hljs-meta">@EnableWebMvc</span><span class="hljs-meta">@EnableGlobalMethodSecurity(prePostEnabled = true)</span> <span class="hljs-comment">// 因为要控制controller中的方法访问，所以此注解要加到子容器中</span><span class="hljs-meta">@ComponentScan(basePackages = &quot;com.zzhua.controller&quot;,excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,classes = Service.class)})</span><span class="hljs-keyword">public</span> <span class="hljs-keyword">class</span> <span class="hljs-title class_">MyWebConfig</span> <span class="hljs-keyword">implements</span> <span class="hljs-title class_">WebMvcConfigurer</span> {<span class="hljs-meta">@Override</span><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title function_">configureDefaultServletHandling</span><span class="hljs-params">(DefaultServletHandlerConfigurer configurer)</span> {<span class="hljs-comment">// 开启静态资源访问</span>configurer.enable();}}*/console.log(hljs.highlight(str, { language: lang }).value);if (lang && hljs.getLanguage(lang)) {try {let highlightedHtml = hljs.highlight(str, { language: lang }).value// 生成行号let lineNum = highlightedHtml.split('\n').length - 1let lineNumbersRowsStart = `<span aria-hidden="true" class="line-numbers-rows">`let lineNumbersRowsEnd = `</span>`for (let i = 0; i < lineNum; i++) {lineNumbersRowsStart += `<span></span>`}const lineNumbersRows = lineNumbersRowsStart + lineNumbersRowsEndlet languageName = `<b class="language-name">${lang}</b>`// 当前时间加随机数生成唯一的id标识var d = new Date().getTime();if (window.performance && typeof window.performance.now === "function") {d += performance.now();}const codeIndex = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,function (c) {var r = (d + Math.random() * 16) % 16 | 0;d = Math.floor(d / 16);return (c == "x" ? r : (r & 0x3) | 0x8).toString(16);});// 复制功能需要一个textarea（这个id需要前面加个字母啥的，不能以数字开头）let textAreaHtml = `<textarea class="copy-textarea" id="copy${codeIndex}">${str}</textarea>`let copyButton = `<button class="copy-btn iconfont icon-fuzhi"  data-clipboard-action="copy" data-clipboard-target="#copy${codeIndex}" type="button"></button>`/* 如果返回的不含pre code标签，它会自己加上；如果返回的含有pre code标签，它就不加了 */return `<pre><code class="language-${lang} hljs">${highlightedHtml}</code>${lineNumbersRows}${languageName}${copyButton}${textAreaHtml}</pre>`;} catch (__) { }}return ""}
})export default {name: 'md2Html',data() {return {mdContent: '',htmlContent: '',}},mounted() {getArticle(29).then(data => {this.mdContent = data.mdContent})},watch: {mdContent(newVal, oldVal) {let _this = thisthis.htmlContent = md.render(newVal)this.$nextTick(() => {var clipboard = new ClipboardJS('.copy-btn');clipboard.on('success', function (e) {console.info('Action:', e.action);console.info('Text:', e.text);console.info('Trigger:', e.trigger);_this.$toast('success','复制成功了哦');e.clearSelection();});clipboard.on('error', function (e) {console.error('Action:', e.action);console.error('Trigger:', e.trigger);});})}}
}
</script>

markdown-it 扩展插件

有些markdown语法，在没有装插件之前不能正常显示，需要安装插件后，才能正确显示。

使用示例

需要安装插件，安装命令在后面

import MarkdownIt from 'markdown-it'
let md1 = new MarkdownIt()
console.log('未用markdown-it-sub时: ', md1.render('H~2~0')); /* 未用markdown-it-sub时: <p>H~2~0</p> */const md3 = new MarkdownIt().use(require('markdown-it-sub'))
console.log('使用markdown-it-sub时: ', md3.render('H~2~0')); /* 使用markdown-it-sub时: <p>H<sub>2</sub>0</p> */console.log(md3.render('Hello from mars :satellite:'));md3.use(require('markdown-it-emoji')) /* <p>Hello from mars :satellite:</p> */console.log(md3.render('Hello from mars :satellite:'));/* <p>Hello from mars 📡</p> */

代码

在这里插入图片描述
安装插件

npm i markdown-it-sub markdown-it-sup markdown-it-mark markdown-it-abbr markdown-it-container markdown-it-deflist markdown-it-emoji markdown-it-footnote markdown-it-ins markdown-it-katex-external markdown-it-task-lists --save

<style lang="scss">
@import url('https://fonts.font.im/css?family=Roboto');* {font-family: 'Roboto';
}.container {width: 600px;margin: 10px auto;textarea {outline: none;}
}/* 行号样式 */
.line-numbers-rows {position: absolute;pointer-events: none;top: 18px;font-size: 100%;left: 0.5em;width: 2.1em;letter-spacing: -1px;border-right: 1px solid #0e0f12;-webkit-user-select: none;-moz-user-select: none;user-select: none;background-color: #282c34;
}pre {position: relative;padding-left: 2.6em;line-height: 1.3em;
}.line-numbers-rows>span {display: block;counter-increment: linenumber;
}pre {background-color: #282c34;border-radius: 8px;
}pre code {border-radius: 8px;
}.line-numbers-rows>span:before {content: counter(linenumber);color: #999;display: block;padding-right: 0.8em;text-align: right;
}.language-name {position: absolute;top: 9px;color: #999999;right: 43px;font-size: 0.8em;-webkit-user-select: none;-moz-user-select: none;user-select: none;
}.copy-btn {position: absolute;right: 8px;top: 8px;background-color: #525252;border: none;padding: 3px 6px;border-radius: 3px;color: #cccccc;cursor: pointer;display: none;
}pre:hover .copy-btn {display: block;
}.copy-textarea {position: absolute;left: -9999px;top: -9999px;
}
</style><template><div class="container"><textarea v-model="mdContent" rows="6" style="width: 100%;"></textarea><div v-html="htmlContent"></div></div>
</template><script>
import { getArticle } from '@/api/articleApi'import ClipboardJS from 'clipboard'
console.log(ClipboardJS);import MarkdownIt from 'markdown-it'
const MarkdownIt2 = require('markdown-it')import hljs from 'highlight.js'
import 'highlight.js/styles/atom-one-dark.css'let md1 = new MarkdownIt()
let md2 = new MarkdownIt2()
console.log(md1);
console.log(md2);console.log(md1.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */
console.log(md2.render('# markdown-it rulezz!'));/* h1>markdown-it rulezz!</h1> */const md = new MarkdownIt({html: true,linkify: true,typographer: true,breaks: true,highlight: function (str, lang) {/* str-> @Configuration@EnableWebMvc@EnableGlobalMethodSecurity(prePostEnabled = true) // 因为要控制controller中的方法访问，所以此注解要加到子容器中@ComponentScan(basePackages = "com.zzhua.controller",excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,classes = Service.class)})public class MyWebConfig implements WebMvcConfigurer {@Overridepublic void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {// 开启静态资源访问configurer.enable();}}lang-> java {name: 'Java', aliases: Array(1), keywords: {…}, illegal: /<\/|#/, contains: Array(23), …}*/console.log('str->', str, 'lang->', lang, hljs.getLanguage('java'));/* <span class="hljs-meta">@Configuration</span><span class="hljs-meta">@EnableWebMvc</span><span class="hljs-meta">@EnableGlobalMethodSecurity(prePostEnabled = true)</span> <span class="hljs-comment">// 因为要控制controller中的方法访问，所以此注解要加到子容器中</span><span class="hljs-meta">@ComponentScan(basePackages = &quot;com.zzhua.controller&quot;,excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,classes = Service.class)})</span><span class="hljs-keyword">public</span> <span class="hljs-keyword">class</span> <span class="hljs-title class_">MyWebConfig</span> <span class="hljs-keyword">implements</span> <span class="hljs-title class_">WebMvcConfigurer</span> {<span class="hljs-meta">@Override</span><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title function_">configureDefaultServletHandling</span><span class="hljs-params">(DefaultServletHandlerConfigurer configurer)</span> {<span class="hljs-comment">// 开启静态资源访问</span>configurer.enable();}}*/console.log(hljs.highlight(str, { language: lang }).value);if (lang && hljs.getLanguage(lang)) {try {let highlightedHtml = hljs.highlight(str, { language: lang }).value// 生成行号let lineNum = highlightedHtml.split('\n').length - 1let lineNumbersRowsStart = `<span aria-hidden="true" class="line-numbers-rows">`let lineNumbersRowsEnd = `</span>`for (let i = 0; i < lineNum; i++) {lineNumbersRowsStart += `<span></span>`}const lineNumbersRows = lineNumbersRowsStart + lineNumbersRowsEndlet languageName = `<b class="language-name">${lang}</b>`// 当前时间加随机数生成唯一的id标识var d = new Date().getTime();if (window.performance && typeof window.performance.now === "function") {d += performance.now();}const codeIndex = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,function (c) {var r = (d + Math.random() * 16) % 16 | 0;d = Math.floor(d / 16);return (c == "x" ? r : (r & 0x3) | 0x8).toString(16);});// 复制功能需要一个textarea（这个id需要前面加个字母啥的，不能以数字开头）let textAreaHtml = `<textarea class="copy-textarea" id="copy${codeIndex}">${str}</textarea>`let copyButton = `<button class="copy-btn iconfont icon-fuzhi"  data-clipboard-action="copy" data-clipboard-target="#copy${codeIndex}" type="button"></button>`/* 如果返回的不含pre code标签，它会自己加上；如果返回的含有pre code标签，它就不加了 */return `<pre><code class="language-${lang} hljs">${highlightedHtml}</code>${lineNumbersRows}${languageName}${copyButton}${textAreaHtml}</pre>`;} catch (__) { }}return ""}
})  .use(require("markdown-it-sub")).use(require("markdown-it-sup")).use(require("markdown-it-mark")).use(require("markdown-it-abbr")).use(require("markdown-it-container")).use(require("markdown-it-deflist")).use(require("markdown-it-emoji")).use(require("markdown-it-footnote")).use(require("markdown-it-ins")).use(require("markdown-it-katex-external")).use(require("markdown-it-task-lists"));console.log('未用markdown-it-sub时: ', md1.render('H~2~0')); /* 未用markdown-it-sub时: <p>H~2~0</p> */
const md3 = new MarkdownIt().use(require('markdown-it-sub'))
console.log('使用markdown-it-sub时: ', md3.render('H~2~0')); /* 使用markdown-it-sub时: <p>H<sub>2</sub>0</p> */console.log(md3.render('Hello from mars :satellite:'));
md3.use(require('markdown-it-emoji')) /* <p>Hello from mars :satellite:</p> */
console.log(md3.render('Hello from mars :satellite:'));/* <p>Hello from mars 📡</p> */export default {name: 'md2Html',data() {return {mdContent: '',htmlContent: '',}},mounted() {getArticle(29).then(data => {this.mdContent = data.mdContent})},watch: {mdContent(newVal, oldVal) {let _this = thisthis.htmlContent = md.render(newVal)this.$nextTick(() => {var clipboard = new ClipboardJS('.copy-btn');clipboard.on('success', function (e) {console.info('Action:', e.action);console.info('Text:', e.text);console.info('Trigger:', e.trigger);_this.$toast('success','复制成功了哦');e.clearSelection();});clipboard.on('error', function (e) {console.error('Action:', e.action);console.error('Trigger:', e.trigger);});})}}
}
</script>
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