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Invariant Violation: Objects are not valid as a React child

In my component’s render function I have: everything renders fine, however when clicking the <li> element I receive the following error: Uncaught Error: Invariant Violation: Objects are not valid as a React child (found: object with keys {dispatchConfig, dispatchMarker, nativeEvent, target, currentTarget, type, eventPhase, bubbles, cancelable, timeStamp, defaultPrevented, isTrusted, view, detail, screenX, screenY, clientX, clientY, … Read more

window.location.href and window.open () methods in JavaScript

window.location.href is not a method, it’s a property that will tell you the current URL location of the browser. Changing the value of the property will redirect the page. window.open() is a method that you can pass a URL to that you want to open in a new window. For example: window.location.href example: window.open() example: … Read more

How to handle Uncaught (in promise) DOMException: The play() request was interrupted by a call to pause()

Below is my code in aspx page to allow playing audio’s of wav format in the browser but with my current code I am unable to play wav audios in Chrome browser but it works in Firefox. How can I handle this exception?

How do I make the first letter of a string uppercase in JavaScript?

How do I make the first letter of a string uppercase, but not change the case of any of the other letters? For example: “this is a test” → “This is a test” “the Eiffel Tower” → “The Eiffel Tower” “/index.html” → “/index.html”

Invariant Violation: Objects are not valid as a React child

What is the difference between React Native and React?

ReactJS is a JavaScript library, supporting both front-end web and being run on a server, for building user interfaces and web applications. It follows the concept of reusable components. React Native is a mobile framework that makes use of the JavaScript engine available on the host, allowing you to build mobile applications for different platforms … Read more

What is VanillaJS?

This is VanillaJS (unmodified): As you can see, it’s not really a framework or a library. It’s just a running gag for framework-loving bosses or people who think you NEED to use a JS framework. It means you just use whatever your (for you own sake: non-legacy) browser gives you (using Vanilla JS when working … Read more

How to round to at most 2 decimal places, if necessary?

Use Math.round() : Or to be more specific and to ensure things like 1.005 round correctly, use Number.EPSILON :

How do I redirect to another webpage?

One does not simply redirect using jQuery jQuery is not necessary, and window.location.replace(…) will best simulate an HTTP redirect. window.location.replace(…) is better than using window.location.href, because replace() does not keep the originating page in the session history, meaning the user won’t get stuck in a never-ending back-button fiasco. If you want to simulate someone clicking on a link, use location.href If you … Read more

What’s the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?

What It Is This is an arrow function. Arrow functions are a short syntax, introduced by ECMAscript 6, that can be used similarly to the way you would use function expressions. In other words, you can often use them in place of expressions like function (foo) {…}. But they have some important differences. For example, they do … Read more

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