codeMirror插件使用讲解

 <link href="/static/codemirror/lib/codemirror.css" rel="stylesheet" >
 <script src="/static/codemirror/lib/codemirror.js"></script>

 <link href="/static/codemirror/theme/3024-night.css" rel="stylesheet">
 <link href="/static/codemirror/theme/erlang-dark.css" rel="stylesheet">
 <script src="/static/codemirror/mode/shell/shell.js"></script>
 <script src="/static/codemirror/mode/perl/perl.js"></script>
 <script src="/static/codemirror/mode/python/python.js"></script>

<!--选择脚本编码代码-->
<div class="controls">
  <input class="ck-code" type="radio" name="script_once_type" id="script_once_type1" checked> shell
   <input class="ck-code" type="radio" name="script_once_type" id="script_once_type2"> bat
   <input class="ck-code" type="radio" name="script_once_type" id="script_once_type3"> python
</div>
<!--选择脚本风格代码-->
<div class="controls">
  <select id='select'>
     <option>default</option>
     <option>3024-night</option>
     <option selected>erlang-dark</option>
  </select>
</div>
<!--textarea-->
<textarea id="script_once_code">
  #!/bin/sh
</textarea>
<textarea id="code2" class="hide">
  #!/usr/bin/env python
  # -*- coding: utf8 -*-
</textarea>

 var editor = CodeMirror.fromTextArea($("#script_once_code")[0], { //script_once_code为你的textarea的ID号
     lineNumbers: true,//是否显示行号
     mode:"shell",　//默认脚本编码
     lineWrapping:true, //是否强制换行
 });

//选择界面风格JS
$('#select').change(function(){
   var theme = $('#select').val();
     editor.setOption("theme", theme); //editor.setOption()为codeMirror提供的设置风格的方法
 });
//选择脚本类型JS
var txt1=$("#script_once_code").val();
var txt2='';
var txt3=$("#code2").val();
$(".ck-code").click(function(){
    var txt=editor.getValue(); //editor.getValue()获取textarea中的值
    var lang=$(this).prop("id");
    if(lang=="script_once_type1") {
        editor.setOption("mode","shell");//editor.setOption()设置脚本类型
          editor.setValue(txt1);// editor.setValue()设置textarea中的值
    }
    else if(lang=="script_once_type2") {
        editor.setOption("mode","perl");
        editor.setValue(txt2);
    }
    else {
        editor.setOption("mode","python");
        editor.setValue(txt3);
    }
});