jQuery $ is not a function - javascript

I have a problem including a jQuery script in my webpage. I always get the error "$ is not a function" in line 6. I reduced my script to the following very simple one:
$(document).ready(function(){
myTest();
});
function myTest(){
window.console && console.log($("#test"));
}
Why is there an error in line 6? Why not already in line 1?

You have not included jquery.js in your page, or the path you have used is incorrect. Here is an example one using Google's CDN:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript">
// your code here...
</script>
</head>
</html>
The line numbers given in browser error messages are notoriously unreliable, always use the actual error message as a guide to the problem.

Hi Please download and include jquery.js or jquery.min.js
in script tag
Give jquery.js path in script src attribute

This error message means that jQuery is not included

Related

Error in Success callbackId: GeolocationXXXX : ReferenceError: Can't find variable: $ [duplicate]

I am using jQuery. This is my coding on my main page:
<script type="text/javascript" src="script.js">
</script>
and my script.js is:
$(document).ready(function(){
$("#title").click(function () {
alert("Works!");
});
});
My full coding can be found here: http://pastie.org/8676656.
Using a tool on the browser, I found an error in my javascript code:
ReferenceError: Can't find variable: $
on line:
$(document).ready(function() {
Any help would be appreciated.
You have to import jQuery before using it:
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="script.js"></script>
Notice it is using // as protocol (not http:// or https://), it means: if your .html file is at a http:// server, it will get jQuery from http://ajax.google..., and if it is at a https:// server, it will get it from https://ajax.google....
Note: If, while developing, you open your HTML file in your browser instead of in a server, you should specify the protocol, as in this answer, otherwise it won't work:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
Also, you should, if possible, place your .js files at the bottom of the page, right before closing </body>. See more in here.
Import jQuery before your code
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"><script>
Include jQuery before your script
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js></script>
this is jquery load problem,
load jquery before all your code and script.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js" ></script>

External file script is not loading

Iam using load() for loading external html file.
$("#header_section").load("header.html");
$("#sidemenu_section").load("side_menu.html");
Here, HTML file is loaded and css also loaded but script file is not loading in the page
<script src="js/utility.js"></script>
I tried to declare the above script file inside the head and inside the body. Both are not working.
Check your relative path to the utility.js file and make sure to load juery.js library before load utility.js file.
and finally try this,
<script type="text/javascript" src="${pageContext.request.contextPath}/js/utility.js"></script>
to load the utility.js file.
I think you forget to add jquery.min.js file. use below code.
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="js/utility.js"></script>
</head>
jQuery may only execute your code with the type attribute set to "text/javascript", per this bug filed a long time ago:
http://bugs.jquery.com/ticket/3733
Try this ...
<script type="text/javascript" src="http://your.cdn.com/first.js"></script>
<script type="text/javascript">
loadScript("http://your.cdn.com/second.js", function(){
//initialization code
});
</script>
The jQuery code that adds HTML to the DOM always strips out <script> tags. It runs them and then throws them away.
An exception to that behavior is when you use "$.load()" with the hack that allows you to load a fragment of a page:
$.load("http://something.com/whatever #stuff_I_want", function() { ... });
In that case, the scripts are stripped and not evaluated/run.

jQuery "$ is not a function" error

I swear I have included jquery in the page header, it is right there!
Nonetheless the following code, which I've included near the bottom of the page (and inline for now) gives me an error saying "TypeError: $ is not a function."
<script>
function displayResult(longA, latA, longB, latB, units) {
$("#distance").html(calcDist(longA, latA, longB, latB, units));
if (units=="m") {
$("#unitLabel").html("miles");
$("units").prop("selectedIndex",0);
} else {
$("#unitLabel").html("kilometers");
$("#units").prop("selectedIndex",1);
}
$("#longA").val(longA);
$("#latA").val(latA);
$("#longB").val(longB);
$("#latB").val(latB);
}
$("#calculateButton").click(function() { //This is the line it's complaining about
var longA=$("#longA").val();
var latA=$("#latA").val();
var longB=$("#longB").val();
var latB=$("#latB").val();
var units=$("#units").val();
displayResult(longA, latA, longB, latB, units);
})(jQuery);
</script>
Higher up in the page header I've got the following:
<script src="jquery.js" ></script>
<script src="calcDistSinglePage.js" ></script>
I'm not using Wordpress or anything, this is a very straightforward hand-coded HTML page.
Try wrapping your code in a closure (which is considered good practice anyways):
(function($) {
$("#calculateButton").click(function() {
// do stuff...
});
}(jQuery));
If this snippet still complains with the same error, there's bound to be a problem with the way you're loading the jQuery library.
Also, make sure that you don't overwrite the $ variable in your other code. For example, inside calcDistSinglePage.js.
The dollar-sign is a very straight-forward javascript variable and can be reassigned to whatever you want. According to the error, $ currently is something but not a function (otherwise you'd receive a ReferenceError stating that $ is undefined). So probably, somewhere in your code, you've overwritten it.
Make sure the jQuery library it's the first script you load.
Add this just before the closing </body> tag.
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="js/vendor/jquery-{{JQUERY_VERSION}}.min.js"><\/script>')</script>
Download the file locally and inside js/vendor/ add the file.
Replace the value {{JQUERY_VERSION}} in the script above adding your jquery version.
Here one CDN you could use.
https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js
https://code.jquery.com/jquery-2.1.3.min.js
You are probably linking it from a root folder that is not your HTML folder. Use an absolute path:
<script src="/jquery.js" ></script>
Or make sure jquery.js is in the same folder as your HTML.

ckeditor: "a is undefined"

I just added CKEditor to my website, but I'm getting the following error in my console:
I followed the installation guide as it's written so I have no idea what's wrong.
Here's, briefly, what my call looks like:
<textarea id="full-editor" name="full-editor" rows="10" columns="6"></textarea>
<script type="text/javascript">
CKEDITOR.replace('#full-editor');
</script>
Aah.. try this
Remove # from the selector inside CKEDITOR.replace('#full-editor');
According to installation guide you shared, this is what u need
CKEDITOR.replace('full-editor'); // NO #. You must have got confused with jQuery
This also happened whenever we put initializer script before <textarea>.
Ensure to put
<script>
CKEDITOR.replace( 'editor1' );
</script>
before the </body> tag (i.e. closing body tag).
<script type="text/javascript">
CKEDITOR.replace('#full-editor');
</script>
Please add above code in external js file and include this js in html page after title page like
$(document).ready(function () {// save as like ckEditorInclude.js
CKEDITOR.replace('#full-editor');
}
<script src="Your folder path/ckEditorInclude.js" type="text/javascript"></script>
This also happened whenever we put initializer script before .
Ensure to put
CKEDITOR.replace( 'editor1' );
before the </body> tag (i.e. closing body tag).
This append to me because i was trying to use CKEDITOR.replace("editor") but there was no element in dom with Id or name "editor"
The issue for me was I copied the code locally from the cdn so that I can work on it if I am not online. I am using version 4.9.2 standard.
Examining the chrome console gave several 404 errors which were not obvious using FireFox. Reverting back to the cdn resolved the issue.
Unfortunately, no working offline with this it seems at least not for this version of ckeditor.

jQuery(...).iris is not a function

I am trying to implement color picker provided here http://automattic.github.io/Iris/
Here is my libraries that i am including.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js"></script>
<script src="js/iris.min.js"></script>
and this is how i am implementing this code
$(document).ready(function() {
jQuery('#color-picker').iris();
});
this is how i have my input field
<input type="text" id='color-picker' value="#bada55" />
but i don't why i get this error
TypeError: jQuery(...).iris is not a function
jQuery('#color-picker').iris();
Seem like the path to your iris script is wrong which caused the browser cannot load the file. So you can check again to see if the path js/iris.min.js is correct.
You can check to see whether your file is loaded or not by going to network tab of either Firebug or Chrome developer tools. If it cannot load the URL which you've provided than you'll receive a 404 error not found in this tab.
Or you can also try to replace:
<script src="js/iris.min.js"></script>
with direct link from Github:
<script src="https://github.com/Automattic/Iris/blob/master/dist/iris.min.js"></script>
The last note is that you just need to include jQuery once, you can choose either version 1.10.2 or 1.8.3 which you know that version will compatible with your jQuery code.
I think this should be something wrong with the iris script here, try to use this version directly from their home page:
<script src="http://automattic.github.io/Iris/javascripts/iris.min.js"></script>
Fiddle Demo
Is your code placed in a way that would let it run before jQuery, jQueryUI and Iris is loaded? Make sure you place your own script file after the rest.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js"></script>
<script src="js/iris.min.js"></script>
<script>
$(document).ready(function() {
jQuery('#color-picker').iris();
});
</script>
You need to have link to jQuery and jQuery UI instead of adding jQuery twice.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js"></script>
<script src="js/iris.min.js"></script>
Then call iris on page load and it will work. Here is a link to working fiddle http://jsfiddle.net/WLru3/
PS: I have directly copy pasted code of iris in js code block, please use library link in your code instead.
Remove a line that includes jQuery 1.8.3 library
Make sure the path to iris.min.js is correct

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