Below is my preliminary Javascript code for making a analog clock. My main problem is I don’t know how to clear the “previous second lines” on the clock surface: I have tried to use “ctx.globalCompositeOperation = “destination-over”;”, however not successful: Could yo…
Tag: setinterval
Change of pictures over and over by using setInterval
Below is a program that is to loop pictures with fade-in effect. It includes this statement: I understand that this statement assigns the opacity value of a window object to a variable opacity, but there is no such opacity variable declaration of any elements in the program! When I remove this statement, it o…
How do I prevent a duplicate random number when using setInterval? (javascript)
I’ve been wanting to generate random numbers through a function and then use setInterval to repeat that function and give me a new number every time. also using node so semicolons might be missing. Answer When you use prevNum as a setInterval() argument, you’re always passing the original value of…
Why clearInterval() is not working in timer Js?
I am training to work with js and one of the projects was a pomodoro timer. The timer works well from the main panel and stops and switches between tabs. But if you click on the clock button in the header and select any of the options there, then the timer does not stop and is not cleared when switching
How can I control this code with “setInterval”?
I tried create a function for use that code in setInterval but when I create a function with that code it stop working. I tried almost everything. Could you guys help me about that? Answer You’ve not defined your function properly and you are calling setInterval in the function that you call in set inte…
Run set interval when click from another component React
i want to trigger countdown of 60 seconds when user click from another component . so far i didn’t find any solution it is not working i search a lot but did not find.Thanks Answer Remember to clear your interval
Make an element falling down to the page using html ,css, js
I want to make the grid element to fall down to the page . I used setInterval to repeat the proces (the bottom will decrease so the grid will descend ) . I think I didn’t create move() function correctly.I just want to know how can I set the function correctly . Answer If you would still like to impleme…
JavaScript On-click Function to start and stop Intervals
I have two onclick functions that performing start and stop functions using socket when i click start it start requesting images from server(i am using intervals) when i click stop the server is stopped but the request keep coming to the server. the intervals seems not stopped after clicking kindly review my …
Setting interval only once by an event listener, but run other functions every time
See this code: I want the other functions to run every time the event occurs, but set the interval for sendEnemies only once. How can I do that? Answer Use a variable like var sentEnemies = false; outside function handleTouchStart and update it in the function to true the first time and use if(!sentEnemies) f…
SetInterval does not work well after some actions
When I press Start button it runs In my game it moves blocks from top to bottom each second. Also I have a laser which shoots and destroy blocks. When you press space key it use another laserId = setInterval(moveLaser, 100) Before you press space key blocks move well each second, but after using lazer blocks …