I have implemented this AJAX enabled route finder for getting from A to
B on the London Underground network, with built in Google Maps for each
station along the way. The AJAX piece allows for auto completion of
station names and performs the search itself. The underlying framework
is Ruby on Rails and scriptaculous. Code:
This JavaScript checks if all the images in the document exists. If a particular image does not exist, that image will be replaced by a custom image! Works with IE only.
This is how it works. In IE, if a particular image does not show up, then its dimensions are 28 x 30 (without the 'alt'). So, the script checks all images with this size after removing the 'alt' tag. If such an image exists, it is a broken-image.
<script language="JavaScript">
function checkImages()
{
if(document.getElementById)
{
var imagesArr = new Array();
var setDefaultErrImg="image_nf.gif"; // Default image to be displayed on error
var setDefaultErrTxt="Image Not Found"; // Default text to be displayed on error
imagesArr = document.getElementsByTagName("img");
for(var i=0; i<imagesArr.length; i++)
{
if(!imagesArr[0].getAttribute("nc")=="1")
{
var tempImgAttrib=imagesArr[i].getAttribute("alt");
imagesArr[i].setAttribute("alt","");
if(imagesArr[i].width=="28" && imagesArr[i].height=="30")
{
imagesArr[i].src=setDefaultErrImg;
imagesArr[i].setAttribute("alt",setDefaultErrTxt);
}
else
{
imagesArr[i].setAttribute("alt",tempImgAttrib);
}
}
}
}
}
window.onload=checkImages;
</script>
When you use the script you will require your custom image (image_nf.gif, here)
There are many websites which allow you to create your own running route on google maps. Does anyone know how this is done? i cant find any information anywhere, tutorials and open source code.
i am hoping to implement something like this into my website, weather its having to build it or simply embed it similar to embedding a map from google.
here is a simple example of what i am aiming to embeded.
Ive got codes that calculate the route & prices between distances upon entering data into two boxes lablled "to" and "from" using google maps. What I need is the route to be shown on the map. Ive tried the googlemap forums but they wont help me (they just direct me to the documentation which I dont really understand).
Anyway after trying to read and understand the code, I managed to get the map to display but when using the form to find postcodes, it stops working.
Is there a way to find out if visitor's browser has Javascript enabled?
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View 2 Replies View RelatedI have seen quite a bit posted about this, but nothing related to the different levels of privacy in Microsoft Explorer 6.0 under the internet options. I am using the script below to determine if cookies are on, but it looks like it only works if the settings are "Accept all cookies" or "Low". The default is "Medium" and the script fails at that setting or above. Do I have to require that the setting be higher than medium to use this code?
document.cookie = "TemporaryTestCookie=yes;";
if(document.cookie.indexOf("TemporaryTestCookie=") == -1) {
alert("Cookies are required to use this web site!
Please click the link at the bottom of the page
and review how to enable cookies! ");
}
else {; }
I want to check whether the user have enabled javascript on their browser or know if not then give an alert msg.
View 16 Replies View RelatedI tried searching in the forums for this, but the search function keeps saying I can't search on less then 3 keywords? (I used the string in the subject!) Anyway... is this possible? I want to determine if JS is enabled, and display a "you must enable javascript to continue" if not.
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tags:
<head>
<script type="text/javascript" src="library/scripts/jquery-
latest.js"></script>
<script type="text/javascript" src="library/scripts/
jquery.tablesorter.js"></script>
[Code].....
But, while the table shows up on the page, the sortable features are not visible. NOTE: In Wordpress I have the WP-Table Reloaded plugin activated, but to trouble shoot this issue, I am not using the shortcode and using a HTML table directly in the page, for now.
What I want to do is have a page that only displays if javascript is enabled(or similar) in the sense that it tells users that js is not enabled and how to enable, what were doing is creating web forms and would only like them viewable if js is enabled so that we can validate client side and reduce server load. Main reason is validation client side, cause if the initial form works well we will expand it to include forms for every type of job we can. No idea to where to start as js is not a strong point.
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View 2 Replies View RelatedJust wondering if anyone can show me the javascript code to check if cookies are enabled on their browsers such that I could have it redirected to another page if cookies are not enabled?
View 1 Replies View RelatedThe following function() works fine on Chrome and Firefox but Internet F*C*I*G Explorer is showing a warning: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus. This function only load a few data into a SELECT, just that.
Code:
function cargarCanales() {
var ciudad = document.getElementById("ciudad").value;
var startTime = "<?php echo $startTime; ?>";
var endTime = "<?php echo $endTime; ?>";
cantCanales = getCanales(ciudad,startTime,endTime);
Up here works fine. If I check cantCanales with "alert" function I get a normal value.
for (i = 1; i <= cantCanales; i++) {
canal.options[i]=new Option(i, i);
}
Here everything is stopped, so I think that may be the problem is the "FOR" but how I said, on Chrome and Firefox everything works fine.
$("#canal").attr("disabled",false);
}
My SELECT.:
Code:
<select id="canal" name="canal"><option value="0">Select Channels..</option></select>
I call the function cargarCanales() from here:
Code:
$("#ciudad").change(function(){cargarCanales();});
When the select CIUDAD change, the cargarCanales function loads..
The full error message : [URL]
I am writing an administration panel for a web site. I want to check if the client's browser javascript enabled and if it is not enabled, a warning DIV comes telling the client to enable javascript and disable the actual page (make the actual page non-usable).
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I want when page loads , <div> be disabled and when button clicked <div> enabled.
How do I do it ? Can we do it using javascript ?
Can JQuery be used here? how?