clearInterval
In our last video we set the setInterval and had our interval run in this video we examine how to terminate our interval and understand the way to target a specific interval.
Video Transcript
00:00Let's force it to end and the way we're going to force it to end is first of all
00:03We have to give our set interval we have to capture that integer. That's coming back, so I'm going to create another private variable
00:11I'm going to call it interval
00:14It's going to be a type of integer
00:16Although we know it's a you ends right because that's what the description told us and there's going to copy that variable and just assign
00:23The value that's coming back from our set interval into our interval variable
00:28Fantastic and now we could use our clear interval and basically call our clear
00:33interval
00:34When our seconds is completed sending into it that ID that number that it's expecting
00:40So if we run our application one more time we should be getting 2 1 0 and that's it
00:47So already we're in great a great spot only problem that we have right now is what would happen if a user calls the start timer
00:55While our application is running, right?
00:59Before it cleared an interval to solve that problem
01:02What we could do is basically every time our start timer is called just before we start a new interval to send a clear interval
01:10Now the reason this was what would work even though the first time it's called
01:14There is nothing to clear our clear forgives us for that if we send a clear interval and there the number that's we're sending
01:21Is zero, but it can't find it. It's just going to ignore it
01:24It's not going to create any errors. So as we run our application each time that we call our start time
01:30It would then first clear our interval making sure that we're not running two intervals at the same time
01:35So if I didn't go in my application
01:37I go to my two and I set a start timer and I decided to start it by ten
01:43Right after I created it even though I started my three and I run my application again
01:49our application will start from ten nine eight and the reason why we're not seeing the ten is because
01:55We're not we're waiting. First of all, we're not tracing out until we actually subtract one, right?
02:01If we would do our trace before then we would see it