I have multiple dropdowns that contain checkboxes and my goal is “on click” to check how many boxes are checked and if it’s more than 1 to hide a logo. I have 2 Problems. Problem 1: The counter never sets to 0 if no check box is checked. Problem 2: Every time I click it runs through the func…
How To Prevent Form Submission And Tell Users That Input Cannot Be Three Numbers
I have spent so many hours searching for either an HTML input tag or Javascript that prevents form submission when input is only 3 numbers. I don’t want to use characters because my input field only requires numbers. } I am using the code above on my form to force the input of three zeros (000) before t…
two dimensional checkbox in html
I have created a HTML form with checkbox like this, but I am struggle to turn them into two dimensional What I want is something like this orange banana apple pear ripe Tick price Tick Tick Tick quantity Tick Tick cost Tick Any method to achieve this? Answer You can build an table like below if you submit for…
Warning Each child in a list should have a unique “key” prop
I have an array of objects which I use to list values in page with map. But from time to time I receive this error. Warning: Each child in a list should have a unique “key” prop. Although keys are unique. Maybe anyone knows what could be wrong here? Answer item needs to be a component, and React c…
Generating a Flicking carousel with React leads to the getComputedStyle error
This question is about egjs-flicking library but perhaps problem is more general. Let us consider two examples of components that will differ only by their render() method. First I provide the whole component. Static case Now the first case is the children of the Flicking container are pre-defined. which give…
Merging contents of an array based on matching content
I am writing some Google Apps Script to get each Google Group and list it’s members then output it to a Google Sheet. Currently, I am grabbing each group and email address and pushing it to the memberArr, however I then want to ‘merge’ the relevant information. So if for example, I have X Gr…
How to stop flickering of modal on event change
I’m a little stuck on this problem, I need to identify why it happening and how we can solve it. The issue is that I have s nested array of Questions and I’m showing up the Modal onClick when the user hits the option and the Modal shows the Sub questions in the Modal. that are nested into question…
Best way to prevent an error when calling remove() on a non-existing element
This causes an error: The way I fix it: My question – is there a more elegant way to prevent an error? One line of code preferably? Answer You can just use the safe navigation operator: In this way, if querySelector returns null, remove() won’t be called. If you are not using a transpiler like Bab…
How do I make an alert box’s input change the value in localstorage? [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 11 months ago. Improve this question I’m trying to make a bookmarklet that modifies the “local storage” for a…
How to modify the top progress bar line when a page is loading just like Youtube and Github
I want to modify the top progress bar line when a page is loading just like youtube and github which have red and blue line at the top respectively when they are loading. Is it possible to do it with pure js? Answer You got to make sure that your data is loaded asynchronously after your main page is loaded.