Which is the the best way (if there is one) to cast from number to string in Typescript? In this case the compiler throws the error: Type ‘number’ is not assignable to type ‘string’ Because location.hash is a string. So which method is better? Answer “Casting” is different …
Tag: javascript
Detect click outside React component
I’m looking for a way to detect if a click event happened outside of a component, as described in this article. jQuery closest() is used to see if the target from a click event has the dom element as one of its parents. If there is a match the click event belongs to one of the children and is thus
How can I download a file using window.fetch?
If I want to download a file, what should I do in the then block below? Note: The code is on the client-side. Answer I temporarily solve this problem by using download.js and blob. It’s working for small files, but maybe not working for large files. I think I should dig Stream more.
How to add the degrees celcius symbol in JavaScript
I am trying to include the degrees Celsius symbol (°C) in my code, this is what I have and it is not working: Answer You just miss ; in ℃
JavaScript – Built in Function to Delete Multiple Keys in an Object?
In JavaScript, I can delete an object’s key with delete myObject[myKey]; Is there an efficient way to delete multiple keys using one line? Something that looks like: multiDelete myObject[keyOne, keyTwo, keyThree]; Answer Here’s a one-liner similar to what you’re requesting.
Square Brackets Javascript Object Key
Can anyone explain how the why/how the below method of assigning keys in JavaScript works? return: Answer It’s the new ES2015 (the EcmaScript spec formally known as ES6) computed property name syntax. It’s a shorthand for the someObject[someKey] assignment that you know from ES3/5: is syntactic su…
Nested Tree structure object trying to extract and get information Json object
I would like to know the correct way to create a nested Json tree Structure object in javascript. data structure containing objects and arrays. How can I extract the information, i.e. access a specific or multiple values (or id)? I have a very deep nested tree structure Json and I am given an object that can …
Google Maps having directions doesn’t work on mobile : “No Routes Found”
I wanted to have a map having directions set to a static destination. From what i saw, i gave a link as follows: Which opens up a new page with the map. I haven’t been able to replicate this on mobile (Android/Ios) however. Following error comes up on the mobile: “No Routes Found” . Can you …
Mapping object to key=value string in one line
Is there a way to convert this object: To a string with the following format? Much like mapping an object to a query string, where each property is a query parameter. I can do it like this: But I was looking for a one-line solution. Is this possible? PS: I cannot use jQuery and any of it utility functions. Th…
GA send event, returns undefined
Innit GA Track event But this allways return undefined, And I added the ‘Registration’ event (with that category, label and value) in conversions, at google analytics site, Any idea why this could happen? Of course it isn’t tracked.. Answer You are mixing old-style classic syntax (using the …