JavaScript

Play an alarm with the table value in webapge

I have a webpage containing a table that auto-refresh everytime & updates the table values. I want to add an alarm when the table value reached a threshold value so I don’t have to look at the table always. what is the best possible way to do this? My webpage is updating data using PHP. I know this …

Unsafe use of expression of type ‘any’ for return statements in Typescript function

backend javascript nestjs node.js typescript

I keep getting a lint issue for this line .then((response): object => response.data) which states Unsafe use of expression of type ‘any’ Answer I suspect that it’s because response is a “generic object” and typescript can’t “identify” that it has a .data attr…

React inlined SVG paths are not responding to css animations

css css-animations javascript reactjs svg

I uploaded my code and svgs to this github repo. I have some svgs of some circles, blobs and triangles. I am trying to make the circles shake, like how the guy shakes in this code pen when you hover on him, I am trying to make the blobs move like waves like in this code pen, and I’m trying

html5/css/javascript : How to superpose two canvas in a div

canvas css html javascript

Hello I’m stuck on a superposition problem of two canvas. Here is a simplified example. Note that in the real application, buttons and drawings are far more complicated and that I want to keep the structure with html5 / css / javascript. I suppose that I miss something in the css to succeed to have thes…

$(this) undefined via requirejs on bower and node

bower javascript jquery node.js requirejs

I am trying to develop an app with a modular approach using requirejs and include only as little jQuery code as possible as necessary. I have a basic SPA app o.html: app.js: main-built.js:483 Uncaught TypeError: Failed to set an indexed property on ‘Window’: Indexed property setter is not supporte…

How to synchronise a timer for everyone client

javascript timer

I have a working timer, but it runs from 25 seg every time who the website is visited by a client, I want to synchronise it. F.E. if i visit my webpage in mY Pc, and when it show 15seg left, i visit it from other pc and i want it to show 15 left too. Answer If you want

How to solve Cannot read property ‘map’ of undefined error in React js?

api html javascript json reactjs

I am building a react js application with dummy backend using json-server.I am implementing a dropdown list but I am getting Cannot read property ‘map’ of undefined error on fetching from api.The api is working fine in browser but while fetching in react it is giving me this error. My component: M…

Encrypt and decrypt a string using simple Javascript without using any external library

algorithm encryption hash javascript

I want to create a function to encrypt a string which will shorten the string into alphanumeric character and also create a function decrypt which will get back the encrypted string. Here is what I coded by taking reference online. Currently the output from the sting=”awesome” is I want similar en…