怎样设置jsp的text文本框不能编辑
有哪们帮忙一下,怎样设置jsp的文本框不能编辑,只能读取其中的值啊.
------解决方案--------------------readonly=false
------解决方案-------------------- <input type= "text " name= "username " readonly= "true ">
------解决方案--------------------readonly即可,写上后无论设置readonly=true,还是readonly=false,都不可编辑 
  <input type= "text " name= "username " readonly>
------解决方案--------------------来晚了!
------解决方案--------------------有两种方法: <input type= "text " name= "username " readonly> 和 <input type= "text " name= "username " disabled> 都可以的.
------解决方案--------------------ls已经给出正确答案
------解决方案--------------------晚了!呵呵!
------解决方案--------------------aa: <input type= "text " name= "aa " onchange= "func() ">  
 bb: <input type= "text " name= "bb " onchange= "func() ">  
 cc: <input type= "text " name= "cc " readonly>    
 func()函数里实现值aa+bb 
------解决方案--------------------别乱教人,只写readonly或者disabled是不符合规范的,HTML是一个XML,属性必须写成  <tagName attName= "attValue " /> 或 <tagName attName= "attValue ">  </tagName>
------解决方案-------------------- <script language=javascript>  
 function showData(){ 
  try{ 
    document.getElementById( "cc ").value=parseFloat(document.getElementById( "aa ").value)+parseFloat(document.getElementById( "bb ").value); 
  }catch(e){ 
    alert( "输入的数据不合法 "); 
  } 
 } 
  </script>    
 aa: <input type= "text " name= "aa " >  
 bb: <input type= "text " name= "bb ">  
 cc: <input type= "text " name= "cc " readonly>  <input type= "button " value= "add " onclick= "showData(); ">  
------解决方案-------------------- <input class= "xx " name= "xxx " type= "text " readonly>