When working with React, developers often come across the need to render lists of items efficiently. Every item in a list needs to have a key prop assigned to it. It is essential for enabling React to track changes made to these items. Using array indexes as these keys is...
![JSON.parse(): Fixing ‘SyntaxError: “[object Object]” is not valid JSON’](https://www.wisdomgeek.com/wp-content/uploads/2023/10/Screenshot-2023-10-22-at-6.09.59 PM-520x293.png)
SyntaxError: “[object Object]” is not valid JSON: usually happens when the value being passed to JSON.parse is not a string value. Let’s see how we can fix it. Scenario 1: The value is already an object Since the value being passed to JSON.parse is already an object, we don’t need...
When installing a package using npm, you might encounter the “error: cannot find module semver” error. The error is caused because of a corrupted package-lock.json or yarn.lock. The most common reason for this is a change in the node version. Fixing “error: cannot find module semver” The fix is a...
Node 17 introduced OpenSSL v3.0, which brought in some breaking changes, and the “Error: error:0308010C:digital envelope routines::unsupported” is a result of one such change. It can be solved by passing in a “–openssl-legacy-provider” flag when running the application. Setting the NODE_OPTIONS environment variable We can set the environment variable that...
I recently was working with a third-party library. I ran into the error “Uncaught SyntaxError: cannot use import statement outside a module” when I tried to import a function from the package. Let us look into why it occurred and how I fixed it. Why is this happening? The error...
ES6 introduced the set data structure in JavaScript. But sets are not ordered abstract data structures. So there is no .sort() property available on them. To sort a Set in JavaScript, we need to convert it into an array first. Since arrays are sortable, we will then sort them, and...
Every once in a while, you come across something and you think, how did I not know this earlier? valueAsNumber is that thing for me. Whenever we need the value of an HTMLInputElement, we go to e.target.value. But getting the value of an input element as a number can be done without...
I was recently trying to comment out some logic inside my JSX to add context about what a potentially complex logic. I then realized that comments in JSX are weird. So, how to write comments in React (JSX)? You cannot use HTML comments because they are parsed as DOM nodes:...
Think that the knowledge shared is helpful? You might want to give our mailing list a try. We'll send you 2-4 emails a month, right when new posts come out.
