Updated Answer: If you are using Babel 7.4.0 or newer, then @babel/polyfill has been deprecated. Instead, you will want to use the following at the top of your main js file (likely index.js or similar): Install these packages either with npm: or with yarn: Original Answer: I just encountered this problem and came across the … Read more
This worked for me: Where isAgeSelected is the id of the control. Also, @karim79’s answer works fine. I am not sure what I missed at the time I tested it. Note, this is answer uses Microsoft Ajax, not jQuery
Yip: Or remove them all first: If a class name is included as a parameter, then only that class will be removed from the set of matched elements. If no class names are specified in the parameter, all classes will be removed.
I’ve been seeing code that looks like: Where does then() come from?
The default conversion from an object to string is “[object Object]”. As you are dealing with jQuery objects, you might want to do to print the element’s ID. As mentioned in the comments, you should use the tools included in browsers like Firefox or Chrome to introspect objects by doing console.log(whichIsVisible()) instead of alert. Sidenote: … Read more
Yes there is a difference! The immediate effect of using innerHTML versus dangerouslySetInnerHTML is identical — the DOM node will update with the injected HTML. However, behind the scenes when you use dangerouslySetInnerHTML it lets React know that the HTML inside of that component is not something it cares about. Because React uses a virtual … Read more
This question already has answers here: Uncaught ReferenceError: $ is not defined? (40 answers) Closed 5 years ago. I have implemented some JavaScript on my site but I keep getting the following error messages: Uncaught ReferenceError: jQuery is not defined and Uncaught SyntaxError: Unexpected token < This is the JavaScript that I am using in … Read more
You are loading the Javascript file in the <head>, before the body of your HTML Is loaded. Therefore your line Has nothing to look up – your button with class guessSubmit doesn’t exist yet. And since guessSubmit is null, it does not contain any properties, hence the error. The easiest solution is to put your … Read more
Add jQuery library before your script which uses $ or jQuery so that $ can be identified in scripts.
JSON doesn’t accept circular objects – objects which reference themselves. JSON.stringify() will throw an error if it comes across one of these. The request (req) object is circular by nature – Node does that. In this case, because you just need to log it to the console, you can use the console’s native stringifying and … Read more