Javascript和Java获取各种form表单信息的简单实例

时间:2023-03-09 04:10:22
Javascript和Java获取各种form表单信息的简单实例

大家都知道我们在提交form的时候用了多种input表单。可是不是每一种input表单都是很简单的用Document.getElementById的方式就可以获取到的。有一些组合的form类似于checkbox或者radio或者select我们如何用javascript获取和在服务器中获取提交过来的参数呢?多说无用、上代码:

Jsp-html代码:

复制代码
代码如下:
 <form action="input.do"
name="formkk">
   <table>
    <tbody>
     <tr>

<td>text:</td>
      <td>
       <input
type="text"
name="text">
      </td>
     </tr>
     <tr>

<td>password:</td>
      <td>
       <input
type="password"
name="pass">
      </td>
     </tr>
     <tr>

<td>radio:</td>
      <td>
       <input
type="radio" name="xingbie" value="1">
       男
       <input
type="radio" name="xingbie"
value="2">
       女
      </td>
     </tr>
     <tr>
      <td>checkbox:</td>
      <td>
       足球:<input
type="checkbox" name="hobby" value="1"  />
       篮球:<input
type="checkbox" name="hobby" value="2"  />
       拍球:<input
type="checkbox" name="hobby" value="3"  />
       斗球:<input
type="checkbox" name="hobby" value="4" 
/>
      </td>
     </tr>
     <tr>
      <td>hidden:</td>
      <td>
       <input
type="hidden" value="123"
name="hidden"/>
      </td>
     </tr>
     <tr>
      <td>option:</td>
      <td>
       <select
name="opt"
id="opt">
       <option>1</option>
       <option>2</option>
       <option>3</option>
       <option>4</option>
       </select>

</td>
    </tbody>
   </table>
   <input
type="button" value="提交"
onclick="javascript:check()"/>
  </form>

Javascript:

复制代码
代码如下:
function check(){

var radio =
document.getElementsByName("xingbie");
   var checkbox =
document.getElementsByName("hobby");
   var select =
document.getElementById("opt");

//获取select标签
   var index =
select.selectedIndex;
   var text = select.options[index].text;
   var
value = select.options[index].value;

//获取radio标签
   for(var
i=0;i<xingbie.length;i++){
    if(xingbie.item(i).checked){
     var
val =
xingbie.item(i).getAttribute("value");
     break;
    }
    continue;
   }
   //获取checkbox标签
   for(var
i=0;i<hobbys.length;i++){
    if(hobbys[i].checked){
     alert(hobbys[i].value);
    }
    continue;
   }

//提交form表单
   document.formkk.submit();

}

Java:

复制代码
代码如下:
 String[] hobbys =
request.getParameterValues("hobby");  //checkbox
 String text =
request.getParameter("text");    //text
 String password =
request.getParameter("password"); //password
 String xingbie =
request.getParameter("xingbie");  //radio
 request.getParameter("hidden");
 request.getParameter("opt");   
//select