How to reload/refresh a page using jQuery? ( answer).3 Ways to parse HTML using JSoup in Java? ( solution).How to redirect web page using jQuery code? ( answer).10 Examples of jQuery selectors for Web Developers ( tutorial). How to use multiple jQuery Date picker element in one HTML page? ( answer).How to get current URL Parameter using jQuery? ( solution).Top 5 jQuery Books Every Web Developer Should Read? (see here).Other jQuery and JavaScript tutorials you may like to explore Most of the cases mentioned here also applicable to common libraries like AngularJS and others as well. You can follow similar approach to any other JavaScript library which is using $ as shortcut. That's all about how to fix the "Uncaught ReferenceError: $ is not defined" in jQuery. Solution is simple, either connect to internet or use a local copy of jQuery library as shown below: It's one of the silly mistake every webĭeveloper makes it sometime or other. If you are downloading jQuery from CDN then you can also use Google hosted jQuery file, which is almost always available.ģ) Another bizarre but a common reason of "ReferenceError: $ is not defined" in jQuery" is that you might be working offline but loading jQuery from internet. One solution of this problem is simply to fix the path to jQuery library. Solution: Include the jquery.js file before any jQuery plugin files.Ģ) The second most common reason of getting "ReferenceError: $ is not defined" in jQuery is due to the incorrect path, either it's a typo or jQuery file is moved to some other location, the browser is not able to load the jQuery file. Since jQuery plugin uses $, it throw "ReferenceError: $ is not defined" if it doesn't find, which is logical because jQuery was not loaded until then. Similarly, if you access a method before declaring it you will get this error as shown below:ġ) One of the most common reason of "ReferenceError: $ is not defined" in jQuery based application is that jQuery plugin is included before jQuery file. Since JavaScript executes inside the browser, your browser like Firefox, Chrome, Edge, or Internet Explorer throws this error when you are using a variable that is not defined, for example, the following code will throw this error, but once you declare the variable using the var keyword, the error will go away:ĭata // ReferenceError: data is not defined var data Uncaught ReferenceError: X is not defined Always remember that jQuery is a library built on JavaScript, once you know JavaScript, it's much easier to troubleshoot any jQuery error. If you happen to work on the same scenario, I strongly suggest you read at least one of the good JavaScript books for beginners like Head First JavaScript. I have seen many web developers who come from Java, C#, HTML, and Python backgrounds started using jQuery without knowing much about JavaScript. One of the common reasons for such error is directly starting with jQuery without knowing JavaScript fundamentals. It's one of the best and hands-on courses to learn ES 6 and other new Javascript features. In this article, you will see some of the most common reasons for "Uncaught ReferenceError: $ is not defined" errors and how to solve them, but before that let's learn some basics about the dreaded Uncaught ReferenceError: $ is not defined error.Īnd, If you want to learn Modern JavaScript or level up your skills then I suggest you join these best JavaScript online courses. If you are doing some jQuery stuff when DOM is loaded and getting this error it means your browser has a problem loading jQuery library either from the internet or local file system. In jQuery, it's a short name of jQuery() function and most commonly used in $(document).ready(function()). Support for scrolling in custom containers by Joseph Matthias Goh.If you are using jQuery, Angular JS, or plain old JavaScript and getting "Uncaught ReferenceError: $ is not defined" error which means $ is either a variable or a method that you are trying to use before declaring it using the var keyword. Infinite loop bugs in iOS and Chrome (when zoomed) by Alex Guzman. Easing functionsĬallback hooks contributed by Ben Armston.Įasing support contributed by Willem Liu.Įasing functions forked from Gaëtan Renaudeau. ID of the scrollable container which the element is a child of. It is passed theĮlement that was scrolled to. callbackAfterĪ callback function to run after the scroll has completed. It is passed theĮlement that will be scrolled to. callbackBeforeĪ callback function to run before the scroll has started. The easing function to be used for this scroll. The offset from the top of the page in which the scroll should stop. The duration of the smooth scroll, in miliseconds. getElementById ( 'my-elem' ) smoothScroll ( element ) // With options var element = $elem var options = Options duration Using defaults var element = document.
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