I’m developing an app that has a painting feature. The user can paint on an image that is initially made of only pure black and pure white pixels. Later, after the user has finished painting, I need to do some processing on that image based on the colors of each pixel. However, I realized that by the ti…
Function doesn’t accept updated value React JS
ascendingDirectionSort has ‘true’ initial value. It can be changed by dropdownlist. When it is changed, console.log in the sortData function shows updated value, but only the ascendingDirectionSort==true condition executes, even when it’s false. Answer While you are passing boolean values to…
Proper way of writing $(this).text().match(r) into vanilla JS?
I have the following function written in jQuery which I would like to convert to javascript but I couldn’t find a proper way so far. I rewrote it this way: Answer
‘undefined’ error prevents last question from displaying…works on previous ones though
I’ve modified a quiz app from some boilerplate code and I’m getting the dreaded ‘undefined’ error. I’ve debugged the error and found that when it gets to the last question in the index, no matter how many questions I create, the last question is displayed but the answer choices a…
Error: Too many re-renders. because i changed setState
error: Too many re-renders. explaining code: ( iam maping array of object – in that mapping funtion i maked new array of objects( raiting = [..rating, {}] ) then set useState state to be that array …
Prepend static parent class before Styled-Component classes
I am trying to figure out something with our Styled Component App. For the context, we create a app that will live inside a website that already has its own global style sheet. The problem is, when we plug in the application within the website, plenty of our generated style is overridden by the global stylesh…
JavaScript function based on counter
I have a chartJS graph. What I am trying to do is to enlarge the section of my graph when a segment of the pie chart is selected. Then decrease it when another section is selected. I am able to increase the section by the following (this works): if you imagine a pie chart I want to select a segment
adding nonce to script tag for 3rd party code that breaks ‘unsafe-eval’
We are using netlify-cms that unfortunately emits code that break CONTENT-SECURITY-POLICY ‘unsafe-eval’. I have tried adding nonce attributes to all the script tags using nginx sub_filter: I then add the nonce to the header also I can see that the nonces in the script tags and the header all match…
Get text from series of elements to an array using cypress JS
I’m trying to get comma separated text from series of <th> elements in a table row. I tried to use element.each() method for 3 nested loops from Cypress and it was super slow and was throwing error (cy.click() failed because this element is detached from the DOM.) sporadically in different test le…
Passing props between siblings
i want to share props from components to sibling children. I’ve read about React Context but can’t implement it. My home component looks like this: I have search state in SearchBar component, and need to pass it to ProductList component Can someone help me to understand this? Answer You can declar…