Web game code help

Question

Problem:
When I click right button after left button the square starts vibrating, please tell me what I should do before pasting the code pls
Thanks in advance
Here's my code:
https://code.sololearn.com/WQyYYsJ5IDtU/?ref=app

Answer 1

https://www.w3schools.com/jsref/met_win_clearinterval.asp

//edited
Using your code as it you can clear the interval before you set interval, so you will be clearing the interval used in the lft() function before invoking the interval in the rght() function and vice versa.

let intervalTimer;
function strt() {
clearInterval(intervalTimer)
intervalTimer = setInterval(start, 64)
}
function rght() {
clearInterval(intervalTimer)
intervalTimer = setInterval(right, 64)
}
function lft(){
clearInterval(intervalTimer)
intervalTimer = setInterval(left, 64)
}