Given HTML: <div class="element" data-name="cat"> <div class="element" data-name="bird"> <div class="element" data-name="dog"> I want to find only the elements that match a data attribute that im keeping in an array like this let Array1 = ["dog","cat","lizard"] I thought I could do…
Consider this simple example array: $letters = [ ['a', 'c', 'f'], ['c', 'f'], ['b', 'd', 'x', 'c', 'f'], ['f'] ]; I need to order the array in descending order by number of letters (or anyway, by the number of elements…
I am trying to figure out how to sum and display input numbers as live calculation. It kind of works but the calculations are wrong. With each iteration it adds bigger number, like in arithmetic sequence. How do I solve…
I want to select the theme value to change it based on localStorage value to set the light/dark theme, how can I do that in React? I know I can use Ref hook in a component but how can I…
I am trying to access a keyword in order to display "You are searching for (any keyword)" but it displays "You are searching for undefined". Can you identify the issue? Thank you in advance! App.js: import './App.css'; import {useState, useEffect}…
I'm developing a Flutter app and I'm trying to find what this is called: Essentially, it's a checklist that only allows one input and is two dimensional. In this image, the top left box is selected. I'd appreciate any help…
i add * after a input, i want select this for change color in input:valid and invalid, but by this CSS not working why? form::after { content: "*"; } #fname:invalid~::after { background: red; border-color: yellow; } #fname:valid~::after { background: rgb(3,…
I'm trying to clear the data that's in each child element of a parent element without removing (or hiding) the actual child elements. To reproduce the problem: Enter data for Test1 and Test2 Click the checkbox 'Use actual data' and…
My following code for a simple webpage on the browser: The buttons on the webpage show up as inline elements instead of of one on top of the other consecutively. Happens as well with using flexbox. Items within the container…
Help me please! There is a source line html from which it is necessary to create Element sequentially. That is, there is a way to create everything at once, simply by parsing the string through innerHTML or DOMParser, but then…