如何设置checkbox 为"checked" , 如何在返回中获得该值(100分)

jasonfu · 2001-02-14

如何设置checkbox 为"checked" , 如何在返回中获得该值,
请帮我修改这个程序，让checkbox工作，谢谢！
===文件名: checkbox.jsp===
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=gb2312">
<title>notitle</title>
</head>
<body>
<p><b>Whycools Query System</b></p>
<%@ page language="java" import="java.sql.*" %>
<form method="POST" action="checkbox.jsp" name="check">
<input type="checkbox" name="ck_ckbox" value="checked">问题:<input type="text" name="ed_name" value ="">
<input type="submit" value="确定">
</form>
<%
String ckbox=request.getParameter("ed_ckbox");
String name=request.getParameter("ed_name");
if (name!=null) out.print (name);
if (ckbox=="Checked") out.print("Great! it is checked now");
else
out.print(" Still need to try!");
%>
</form>
</body>
</html>

kevinfu · 2001-02-14

如果你只想在当前页面检查CHECKBOX 是否checked，可以使用JavaScript 吗？.
&lt;html&gt;
&lt;head&gt;
&lt;meta http-equiv="Content-Type" content="text/html;
charset=gb2312"&gt;
&lt;title&gt;notitle&lt;/title&gt;
&lt;script language="javascript"&gt;
function writeMSG(){
var frm=document.formcheck;
var slt=false;
for (var i = 0 ;
i &lt;
frm.elements.length;
i++) {
if (frm.elements.type == "checkbox") {
if (frm.elements.checked){
document.write(frm.elements.name);
document.write(" value is:");
document.write(frm.elements.value);
}
}
}
}
function check(){
var frm=document.formcheck;
var slt=false;
for (var i = 0 ;
i &lt;
frm.elements.length;
i++) {
if (frm.elements.type == "checkbox") {
if (frm.elements.checked){
slt=true;
break;
}
}
}
if (slt)
frm.submit();
else
alert("Still need to try!");
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;p&gt;&lt;b&gt;Whycools Query System&lt;/b&gt;&lt;/p&gt;
&lt;form method="POST" action="javascript:writeMSG();" name="formcheck"&gt;
&lt;input type="checkbox" name="ck_ckbox" value="checked1"&gt;问题:&lt;input type="text" name="ed_name" value =""&gt;&lt;br&gt;
&lt;input type="checkbox" name="ck_ckbox" value="checked2"&gt;问题:&lt;input type="text" name="ed_name" value =""&gt;&lt;br&gt;
&lt;input type="submit" value="确定" onClick="javascript:check();"&gt;
&lt;/form&gt;
&lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;

jasonfu · 2001-02-22

我想要在返回时获得是否checked

eguy · 2001-02-23

input type="checkbox" name="ck_ckbox" value="checked"
>>String ckbox=request.getParameter("ed_ckbox");
>>if (ckbox=="Checked") out.print("Great! it is checked now");
>> else
out.print(" Still need to try!");
以上是你原来的一些东东。根据你生成的HTML文件，以改成以下
String ckbox=request.getParameter("ck_ckbox");
if (ckbox!=null ) out.print("Great! it is checked now");
else
out.print(" Still need to try!");

jasonfu · 2001-02-26

谢谢两位，问题解决！

如何设置checkbox 为"checked" , 如何在返回中获得该值(100分)

jasonfu

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kevinfu

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jasonfu

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eguy

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jasonfu

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