I am new to JavaScript and here is a problem when I trying out prototype.
I want to update sample.jsp with Ajax.updater after the it is loaded, but it doesn't work. Here the source of smaple.jsp.
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<script src="prototype.js"></script>
<script>
function f1(){
var ajax = new Ajax.updater(
{success: 'state'},'part.html'
,{method:'get'});
}
document.observe('dom:loaded', function() {
f1();
});
</script>
</head>
<body>
state:
<div id="state"></div>
<br>
</body>
</html>
Could anyone tell me what's wrong with my code?
try "Ajax.Updater" (capital U) for starters
also I recommend that you try working with firefox and the firebug plugin, it's a great way to debug your javascript
I have tried another one and it works
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>AJAX Zip Checker </title>
<link rel="stylesheet" href="style.css" type="text/css" />
<script src="prototype.js"></script>
<script type="text/javascript" language="JavaScript">
function checkZip() {
if($F('zip').length == 5) {
var url = 'checkzip.jsp';
var params = 'zip=' + $F('zip');
var ajax = new Ajax.Updater(
{success: 'zipResult'},
url,
{method: 'get', parameters: params, onFailure: reportError});
}
}
function reportError(request) {
$F('zipResult') = "Error";
}
</script>
</head>
<body>
<label for="zip">zip:</label>
<input type="text" name="zip" id="zip" onkeyup="checkZip();" />
<div id="zipResult"></div><p/>
</body>
</html>
checkzip.jsp
<%
String zip = request.getParameter("zip");
if (zip.equals("10009")) {
%>
new york
<%} else {%>
unknown
<% }%>
Could anyone tell me the difference?
Related
the function setImg() if called with an argument is not running but if no argument is passed then the function runs what m i doing wrong please help.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/javascript">
function setImg(p)
{
window.alert(p);
document.getElementById('img').innerHTML ="<img src=p width='100' height='105'>";
}
</script>
</head>
<body>
load image
<div id="img">
</div>
</body>
</html>
You are missing the quotes for the src plus you should break up the string and add the variable to prevent it reading p as text.
Update the JS to the following:
<script type="text/javascript">
function setImg(p)
{
document.getElementById('img').innerHTML ="<img src='" + p + "' width='100' height='105'>";
}
</script>
Plus in the HTML you need to be careful with quotes:
load image
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/javascript">
function setImg(p)
{
window.alert(p);
document.getElementById('img').innerHTML ="<img src=p width='100' height='105'>";
}
</script>
</head>
<body>
load image
<div id="img">
</div>
</body>
</html>
Well your were closing html attribute accidentally, you should use ' single-quotes instead.
Small mistake of quotes
change
load image
to
load image
I need to use onunload event of body. But its not working. I have following code for that. Please help me.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body onunload="myFunction();">
</body>
</html>
<script type="application/javascript">
function myFunction()
{
alert("hello");
}
</script>
</html>
<script type="application/javascript">
function myFunction()
{
alert("hello");
}
</script>
you should use this inner html like
<html>
<head>
....
<script type="application/javascript">
function myFunction()
{
alert("hello");
}
</script>
</head>
<body onunload="...">
Yes i got the solution. Thanks to #artm
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="application/javascript">
window.onbeforeunload=before;
window.onunload=after;
function before(evt)
{
$.ajax({
type:'POST',
url:'addVar.php',
dataType:'text',
data:{
},
success:function(data){
},
error:function(XMLHttpRequest,textStatus,errorThrown){
}
});
//return "asd";//If the return statement was not here, other code could be executed silently (with no pop-up)
}
function after(evt)
{
//This event fires too fast for the application to execute before the browser unloads
}
</script>
</head>
<body >
</body>
</html>
Your <script> tag is outside of your <html> tag. Try moving it into your <head>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="application/javascript">
function myFunction()
{
alert("hello");
}
</script>
</head>
<body onunload="myFunction();">
</body>
</html>
My code works inside an html but not from an external .js file.
In my external .js, I have a function like .animate() and hide() etc. working fine but
just for functions like .text() or .html() it is not working in the external file.
I even deleted all my code and just kept this script, still it didn't work, but when I copy pasted into my html it worked.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body >
<div id="demo"> --- </div>
<button>click me</button>
</body>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$("button").click(function(){
$("#demo").html("text");
});
</script>
</html>
Try this in your JS
$(function() {
$("button").click(function(){
$("#demo").html("text");
});
});
your html code is fully messed up!! update your code with the below
HTML
<!DOCTYPE html>
<html>
<head>
<title>Test Page</title>
</head>
<body>
<div id="demo"> --- </div>
<button>click me</button>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
$("button").on("click", function() {
$("#demo").html("text");
});
});
</script>
</body>
</html>
I have 3 index pages say
index_ch.jsp
,index_ie.jsp
,index_me.jsp
and a main parent page named
browserdetect.jsp
when the user first enters my url in a browsere browserdetect.jsp will run ...... what i need is the jquery or java script that can be put in my browserdetect.jsp which will first detect the browser the user uses and then redirect to the respective index pages based on the browser he or she uses ...... can any one help me out please
Adding this script to my head section helped me to do what i wanted .... thank you for the help guys ........
if ((navigator.userAgent.indexOf('MSIE') >= 0) && (navigator.userAgent.indexOf('Opera') < 0))
{
window.location.replace("your page");
}
else if (navigator.userAgent.indexOf('Chrome') >= 0)
{
window.location.replace("your page");
}
else
{
window.location.replace("your page");
}
</script>
This code helps you to detect browser of user.
var x = "User-agent header sent: " + navigator.userAgent;
I guess you want to detect brower of user
if ((navigator.userAgent.indexOf('MSIE') >= 0) && (navigator.userAgent.indexOf('Opera') < 0))
{
the code of index_ie.jsp...
}
else if (navigator.userAgent.indexOf('Chrome') >= 0)
{
the code of index_ch.jsp...
}
else
{
the code of index_me.jsp...
}
browserdetect.jsp ------page
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript">
function detectBrowser(){
var nAgent = navigator.userAgent;
var verOffset;
if ((nAgent.indexOf("MSIE"))!=-1) {
browserName = "Microsoft Internet Explorer";
window.location = "index_ie.jsp";
}
else if ((verOffset=nAgent.indexOf("Chrome"))!=-1) {
browserName = "Chrome";
window.location = "index_ch.jsp";
}
else if ((verOffset=nAgent.indexOf("Firefox"))!=-1) {
browserName = "Firefox";
window.location = "index_me.jsp";
}
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body onload="detectBrowser()">
<h1>Hello World!</h1>
</body>
</html>
===============================================================================
index_ch.jsp -----page
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World! Chrome</h1>
</body>
</html>
=========================================================================
index_ie.jsp -----page
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World! Internet Explorer</h1>
</body>
</html>
=============================================================================
index_me.jsp -----page
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World! Mozilla Firefox</h1>
</body>
</html>
you can use jsp redirecting tags
1. jsp:forward :- server side redirect [not show index_ie.jsp in the URL]
2. response.sendRedirect :-browser side redirect[ show index_ie.jsp in the URL]
instead of window .location.
I want the button on the second page to change the value of the button in the first page,this is my code:
FILE 1: Index.html(page one):
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Eran Exercise</title>
<link rel="stylesheet" type="text/css" href="design.css" />
<script src="new_file.js"></script>
</head>
<body>
<div class="wrapper">
<form>
<input type="button" id="id200" value="New Window!" onClick="window.open('page2.html','mywindow','width=400,height=200')">
</form>
</div>
</body>
</html>
FILE 2:new_file.js(the js file)
function changeLink()
{
var someOtherName="after click";
xmlhttp=new XMLHttpRequest();
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("id200").value = someOtherName;
}
}
xmlhttp.open("GET","index.php");
xmlhttp.send();
}
FILE 3:page2.html (page two)
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<script src="new_file.js"></script>
</head>
<body>
<input type="button" id="id100" onclick="changeLink()" value="Change link">
</body>
</html>
Thanks!
Replace
document.getElementById("id200").value = someOtherName;
by
window.opener.document.getElementById("id200").value = someOtherName;
previous answer +1
but it will work only on the same domain or if the server sends special header
you can use cookies or local storage
save in it state on the second page and get it on the first page
also you can use php script and get/save the state from/to there
you had missed the third parameter at xhr.open
and never use sincronious requests