I was wondering, with v8, when storing class attributes, is it more performant to use one variable with mixed types or one variable per type? Consider the following snippets (written in TypeScript for making the difference more clear): Afaik both should have advantages or defaults. Using one variable would ha…
Tag: javascript
Recursively Search in Array with a For Loop
I know there are better ways to search an array, but I really want to understand how to return when the value is found in a recursive call. Logging when found isn’t a problem, but I can’t seem to make this return true when found. The problem is basic. Fully search multi-dimensional array for a val…
Array manipulation with multiple conditions – Vue.js / JavaScript
In my Vue.js application I use a navigation drawer to display the different pages a user has access to. Pages are also only visible if the administrator has activated the related module. Therefore the unique moduleID is set for each page and children. The list is populated by filteredPages[]. This array is th…
Can’t perform a React state update on an unmounted component with fetch POST method
I get this warning when i use my fetch post method how can I cancel all subscriptions and asynchronous tasks in a useEffect cleanup function.With my Post methods. Warning: Can’t perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. T…
JS append elements
I am generating some <li> with JS into my list. This <li> consist from few elements, such as <div>, <section>, etc. And my question is. For now, I generate exact number of elements into the array and then I append these elements from that array. But I would like to know, if I am able t…
Drawing using SVG icon path [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question I am new to SVGs. I wanna make an icon like the below image. How can I achieve this with svg…
Is there a better/more efficient way to achieve this?
I’m learning Javascript and getting started with React. I’m attempting to build a Materials-UI’s DataGrid and need to structure my data accordingly. I have the following piece of code that prepares the Rows and Columns for DataGrid but I feel it may be “slow” and wondering if I c…
Js call function with arguments
I have created 4 buttons and every button with its own id and I have a function that displays the given element id. so I want to apply it on all this 4 buttons. what did I do wrong? Answer Do it as below – Passing arguments to onclick event – Using HTML – Using JS – But, as mentioned
jQuery method .find() with special character (&)
I’m getting a “Syntax error, unrecognized expression” when running the following jQuery: What options do I have where the href value would be #one-&-two and I’m trying to toggle the class on an element within a div#mega-menu with id=”#one-&-two” ? I’ve tried e…
Returning the shortest word
I have an array and I want to return the shortest word in this Array I tried it with the reduce method but the code doesn’t return the right word, this is my code below, any help would be so appreciated. Answer You can simplify your code by first filtering on whether the value is a number, and then you