jsp动态换背景有关问题
日期：2014-05-18 浏览次数：20769 次
jsp动态换背景问题
有个index.html文件里面有4张图我想点一张图,test.jsp页面的背景就换一下
我用
String p=request.getParameter( "user ");
String s=user.substring(25);
获得了图片的相对路径
但是怎么用这个变量s换背景呢？我的jsp刚刚学，所以我用的是js的
document.body.background方法,但是发现document.body.background=s根本不行
好像是jsp根js变量不能混用
代码：
==============================================
test.jsp
<%! String s;%>
<%
String p=request.getParameter( "user ");
s=user.substring(25);
%>
<script language= "javascript ">
document.body.background=s;
</script>
=========================================================
index.html
<script language= "javascript ">
function test(obj){
form1.user.value=obj.src;
form1.submit();
}
</script>
</head>
<body>
<form id= "form1 " name= "form1 " method= "post " action= "Test.jsp ">
<input name= "user " type= "text "; onclick= "alert( "aaa ") " />
</form>
<a href=#;> <img src= "image/banner.jpg " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/login.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/rem.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/pic_foot.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
=====================================================================
------解决方案--------------------
<script language= "javascript ">
document.body.background=s;
</script>
改为
<script language= "javascript ">
document.body.background= ' <%=s%> ';
</script>
------解决方案--------------------
ding
有个index.html文件里面有4张图我想点一张图,test.jsp页面的背景就换一下
我用
String p=request.getParameter( "user ");
String s=user.substring(25);
获得了图片的相对路径
但是怎么用这个变量s换背景呢？我的jsp刚刚学，所以我用的是js的
document.body.background方法,但是发现document.body.background=s根本不行
好像是jsp根js变量不能混用
代码：
==============================================
test.jsp
<%! String s;%>
<%
String p=request.getParameter( "user ");
s=user.substring(25);
%>
<script language= "javascript ">
document.body.background=s;
</script>
=========================================================
index.html
<script language= "javascript ">
function test(obj){
form1.user.value=obj.src;
form1.submit();
}
</script>
</head>
<body>
<form id= "form1 " name= "form1 " method= "post " action= "Test.jsp ">
<input name= "user " type= "text "; onclick= "alert( "aaa ") " />
</form>
<a href=#;> <img src= "image/banner.jpg " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/login.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/rem.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
<a href=#;> <img src= "image/pic_foot.gif " alt= " " width= "232 " height= "166 " border= "0 ";id= "img1 "; onclick= "test(this) "/> </a>
=====================================================================
------解决方案--------------------
<script language= "javascript ">
document.body.background=s;
</script>
改为
<script language= "javascript ">
document.body.background= ' <%=s%> ';
</script>
------解决方案--------------------
ding
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