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Update parent component state with a function whose arguments rely on child component

I know it seems like a duplicate from That question but it’s not, I need to do something slightly different that’s not working. I’m implementing: a componente <Page/> which has two child components: a <Greetings/> message. a <LoginButton/> button. <Page/> has a {isLogged: false} state. <Greetings/> should display different messages when isLogged is true/false. <LoginButton/> should have a login text

node Fetch return undefined body from API

I’m learning Javascript and Node.js. I am trying to return the body of the response by using node-fetch but I received an undefined output. Is there any way that I can get the body returned? Answer It’s as simple as that when you stop messing with your head with the .then() Promise-style, and you use only the async/await style :

javascript update view if value change

i have java script where im getting value from websocets server, is updating the view every 1 sec , i will like to have the view only to be updated when the value change (add new point on the chart ), as for now is updating every time even if the value is the same, Answer Keeping only the interval

Console.log from a class’ function

I want to test if my function inside my class returns the given sentence. But if I try to test using console.log, it returns ReferenceError: rev is not defined. What am I doing wrong? I’m a fairly new programmer, so bear with me if this is a stupid question. Answer The entire point of a class is to provide a

Node JS Nested Array Transformation

I am trying to transform following array but it’s only transforming single level. multiple remain same want to remove entity for each level of object. I have used the map to modify object not sure if there are others method for the multi level Here is the array Tried following code to transform I am getting following Output Expected Please

custom chart using google sheets data

I’m new to this, so please bear with me 🙂 I have a google sheet with columns: ‘Name, A-Score,T-Score, R-Score, P-Score’ Scores are numerical values from 0 to 20. This data needs to be converted to a special, but very simple graph which i don’t think is available in the existing sheets charting options. I’ve tried to write some code

Visual effect on click or touch with pure Javascript and CSS

I have a responsive webpage which contains pictures and text and is designed to be viewed on a mobile device. I would like to add visual effects such that whenever a user touches or clicks on the page something happens at the point of contact (eg. a ripple or expanding circle). Ideally I could put a bunch of different visual

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