JS库之Highlight.js的用法详解

网络编程 2021-07-04 17:32www.168986.cn编程入门

highlight.js是一款轻量级的Web代码语法高亮库。狼蚁网站SEO优化通过实例代码给大家分享JS库之Highlight.js的用法详解，感兴趣的朋友跟随狼蚁SEO长沙网络推广一起学习吧

官网

下载地址

下载到本地后，新建个页面测试

1、在head中加入css和js的引用

<head> 
  <title>highlight</title> 
  <meta http-equiv="content-type" content="text/html;charset=utf-8"> 
  <link rel="stylesheet" href="styles/default.css" rel="external nofollow" rel="external nofollow" > 
  <script src="highlight.pack.js"></script> 
  <script>hljs.initHighlightingOnLoad();</script> 
</head>

2、添加对应要显示的内容

<pre> 
<code class="python"> 
  # 读取文件内容 
  def fread(self): 
    # 如果指针位置大于文件大小，说明是更换了文件 
    self.filename = self.getLogPath() 
    if not os.path.isfile(self.filename): 
      while not self.checkfile() : 
        time.sleep(5) 
        self.filename = self.getLogPath() 
      self.fclose() 
      self.fopen() 
      self.pos = 0 
    self.hd.seek(self.pos,0) 
    fline = self.hd.readline() 
    self.pos = self.hd.tell() 
    return fline.replace("\n","") 
  # 将文件指针定位到文件尾部 
  def feof(self): 
    self.fopen() 
    # 定位到文件末尾 
    self.hd.seek(0,2) 
    #设置指针位置 
    self.pos = self.hd.tell() 
</code> 
</pre>

这里需要把要显示的内容放入到 <pre><code>这里放内容...</code></pre> 这种格式中

默认的话会智能识别，若是识别不出来是什么语言，就需要在<code>标签中加入class

例如 <pre><code class="java" >xxx</code></pre> 即可

下载的时候可以选择你需要的语言，然后再打包，下载后会发现有个style文件夹，里面放了各种不同的显示颜色，为了看看都是些什么样子

我这里弄了个可以选择样式的页面

代码如下

<html> 
<head> 
  <title>highlight</title> 
  <meta http-equiv="content-type" content="text/html;charset=utf-8"> 
  <link rel="stylesheet" href="styles/default.css" rel="external nofollow" rel="external nofollow" > 
  <script src="highlight.pack.js"></script> 
  <script>hljs.initHighlightingOnLoad();</script> 
</head> 
<body> 
<div id="changeStyleSelect"></div> 
PHP 
<hr> 
<pre><code class="php"> 
class Test { 
  private $name; 
  private $age; 
  public function __construct($array) { 
    $this->name = $array['name']; 
    $this->age = $array['age']; 
  } 
  public function getName() { 
    return $this->name; 
  } 
  public function setName($name) { 
    $this->name = $name; 
  } 
  public function getAge() { 
    return $this->age; 
  } 
  public function show() { 
    printf('my name is %s,age is %d',$this->name,$this->age); 
  } 
} 
</code></pre> 
javascript 
<hr> 
<pre> 
<code class="javascript"> 
  test = { 
    name : function () { 
      return 'hello'; 
    }, 
    age : function () { 
      return 13; 
    } 
  } 
</code> 
</pre> 
python 
<hr> 
<pre> 
<code class="python"> 
  # 读取文件内容 
  def fread(self): 
    # 如果指针位置大于文件大小，说明是更换了文件 
    self.filename = self.getLogPath() 
    if not os.path.isfile(self.filename): 
      while not self.checkfile() : 
        time.sleep(5) 
        self.filename = self.getLogPath() 
      self.fclose() 
      self.fopen() 
      self.pos = 0 
    self.hd.seek(self.pos,0) 
    fline = self.hd.readline() 
    self.pos = self.hd.tell() 
    return fline.replace("\n","") 
  # 将文件指针定位到文件尾部 
  def feof(self): 
    self.fopen() 
    # 定位到文件末尾 
    self.hd.seek(0,2) 
    #设置指针位置 
    self.pos = self.hd.tell() 
</code> 
</pre> 
java 
<hr> 
<pre> 
<code class="java"> 
  package l2f.gameserver.model; 
  import java.util.ArrayList; 
  public abstract class L2Character extends L2Object { 
   public static final Short ABNORMAL_EFFECT_BLEEDING = 0x0_0_0_1; // not sure 
   public void moveTo(int x, int y, int z) { 
    _ai = null; 
    _log.warning("Should not be called"); 
    if (1 > 5) { 
     return; 
    } 
   } 
   / Task of AI notification / 
   @SuppressWarnings( { "nls", "unqualified-field-aess", "boxing" }) 
   public class NotifyAITask implements Runnable { 
    private final CtrlEvent _evt; 
    List mList = new ArrayList() 
    public void run() { 
     try { 
      getAI().notifyEvent(_evt, _evt.class, null); 
     } catch (Throwable t) { 
      t.printStackTrace(); 
     } 
    } 
   } 
  } 
</code> 
</pre>   
<script> 
  styleArr = ["agate.css","androidstudio.css","arduino-light.css","arta.css","ascetic.css","atelier-cave-dark.css","atelier-cave-light.css","atelier-dune-dark.css","atelier-dune-light.css","atelier-estuary-dark.css","atelier-estuary-light.css","atelier-forest-dark.css","atelier-forest-light.css","atelier-heath-dark.css","atelier-heath-light.css","atelier-lakeside-dark.css","atelier-lakeside-light.css","atelier-plateau-dark.css","atelier-plateau-light.css","atelier-savanna-dark.css","atelier-savanna-light.css","atelier-seaside-dark.css","atelier-seaside-light.css","atelier-sulphurpool-dark.css","atelier-sulphurpool-light.css","brown-paper.css","codepen-embed.css","color-brewer.css","dark.css","darkula.css","default.css","doo.css","dracula.css","far.css","foundation.css","github.css","github-gist.css","googlecode.css","grayscale.css","gruvbox-dark.css","gruvbox-light.css","hopscotch.css","hybrid.css","idea.css","ir-black.css","kimbie.dark.css","kimbie.light.css","magula.css","mono-blue.css","monokai.css","monokai-sublime.css","obsidian.css","paraiso-dark.css","paraiso-light.css","pojoaque.css","purebasic.css","qtcreator_dark.css","qtcreator_light.css","railscasts.css","rainbow.css","school-book.css","solarized-dark.css","solarized-light.css","sunburst.css","tomorrow.css","tomorrow-night.css","tomorrow-night-blue.css","tomorrow-night-bright.css","tomorrow-night-eighties.css","vs.css","xcode.css","xt256.css","zenburn.css"]; 
  selectHtml = []; 
  selectHtml.push('<select id="changeStyle">'); 
  for(i in styleArr) { 
    OptionValue = styleArr[i]; 
    selectHtml.push('<option value="' + OptionValue +'" >'+ OptionValue +'</option>'); 
  } 
  selectHtml.push('</select>'); 
  selectHtmlString = selectHtml.join(""); 
  document.getElementById('changeStyleSelect').innerHTML = selectHtmlString; 
  obj = document.getElementById('changeStyle'); 
  obj.addEventListener("change",function(event){ 
    var value = this.options[this.options.selectedIndex].value;   
    l = document.createElement('link'); 
    l.setAttribute('href','styles/'+value); 
    l.setAttribute('rel','stylesheet'); 
    document.head.appendChild(l); 
  }); 
  </script> 
</body> 
</html>

效果图

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