JavaScript清除空格、换行，把双引号转换成单引号

1、页面

　

2、源码

 <!DOCTYPE>
 <html>
 <head>
      <meta charset="utf-8">
     <title>清除字符串的空格和双引号</title>
     <style type="text/css">
         textarea{
             padding:10px;
             font-size:18px;
             width:100%;
             resize:none;
         }
         .main{
             padding:40px 10px;
             clear:both;
             overflow:hidden;
         }

         .main .left{
             float:left;
             width:40%;
         }
         .main .center{

             float:left;
             width:20%;

             text-align:center;

         }
         .main .right{
             float:right;
             width:40%;
         }
         .footer{
             text-align:center;
             color:red;
         }
     </style>
 </head>
 <body>
     <div class="main">
         <div class="left">
             <textarea rows="10" id="ta1"></textarea>
         </div>

         <!--【中部开始】-->
         <div class="center">
             <br>
             <label for="ck1">(1) 清&nbsp;&nbsp;&nbsp;除&nbsp;&nbsp;&nbsp;&nbsp;空&nbsp;&nbsp;&nbsp;格</label><input type="checkbox" id="ck1" checked="checked"><br><br>
             <label for="ck2">(2) 清&nbsp;&nbsp;&nbsp;除&nbsp;&nbsp;&nbsp;&nbsp;换&nbsp;&nbsp;&nbsp;行</label><input type="checkbox" id="ck2" checked="checked"><br><br>
             <label for="ck3">(3) 双引号转单引号</label><input type="checkbox" id="ck3" checked="checked"><br>
             <br>
             <button onclick="Run()">转换</button>
         </div>
         <!--【中部结束】-->

         <div class="right">
             <textarea rows="10" id="ta2"></textarea>
         </div>
     </div>
     <div class="footer">提示：如果包含有HTML标签，建议不要选择清除空格！</div>

     <script type="text/javascript">
         function Run(){
             var ta1 = document.getElementById("ta1");
             var ta2 = document.getElementById("ta2");
             var ck1 = document.getElementById("ck1");
             var ck2 = document.getElementById("ck2");
             var ck3 = document.getElementById("ck3");
             var rst = ta1.value;

             if(ck1.checked){
                 //alert(1);
                 rst = Trim(rst);
             }

             if(ck2.checked){
                 rst = ClearBr(rst);
             }

             if(ck3.checked){
                 rst = Change(rst);
             }
             //rst += "+++";
             ta2.value = rst;
             ta2.select();
             document.execCommand("Copy"); // 执行浏览器复制命令
             alert("执行完成，可以直接粘贴");

         }

         //去除空格
         function Trim(str){
             return str.replace(/\s+/g,"");
         }

         //去除换行 
         function ClearBr(str) { 
             //str = str.replace(/<\/?.+?>/g,""); 
             str = str.replace(/[\r\n]/g, ""); 
             return str; 
         } 
         function Change(str){
             return str.replace(/\"/g, "'");
         }
     </script>
 </body>
 </html>