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The realization of JS restricting the number of characters in textarea text field

Source: Internet
Author: User
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This article introduced the JS limit textarea text field characters number of concrete implementation, the need for friends can refer to copy code code as follows:


      <title>js Limit the number of textarea text field characters </title >   
   <meta http-equiv= "Content-type" content= "text/html; charset=gb2312"/>    
   <script language= "JavaScript" >   
   <!--    
   function textcounter (field, Countfield, maxlimit) {   
  //functions, 3 parameters, form name, form field element name, restricted character;   
   if (Field.value.length > Maxlimit)    
  //If the element area characters are greater than the maximum number of characters, truncate;    by the largest number of symbols
   Fieldfield.value = field.value.substring (0, Maxlimit);   
   else   
  //Display the remaining number of characters in the Register text box;   
   countfield.value = maxlimit- field.value.length;   
  }   
  -->   
   </SCRIPT>   
      <body>   
    <form name=myform action= "" >    
        <textarea name= "message" cols= "rows=" 5 "OnKeyDown = "Textcounter (message,remlen,6);" Onkeyup=
"Textcounter (message,remlen,6);" ></textarea>   
        You can also enter: <input name= " Remlen "type=" text "value=" 6 "size=" 5 "readonly=" readonly "> Characters    
    </form >   
   </body>   
  

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Related Keywords:
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