We have to activate it. To do that we need to simply add the name of the function to the end of our code just before the last curly brace. Now go back to the preview mode. See some numbers? We need to do some things to make it look more like a real digital clock.
You can style your clock however you want. We made ours big, white and in the middle of a blue screen. So our clock works and looks pretty good but something is missing.
The reason our clock is frozen is that it is only running through the displayTime function once, when the page loads. We need to write some code to tell it to run every second. Our function now runs every second. Just like a clock should. We got our clock ticking but we still have a couple other problems. You might have to wait a minute to see this one. For our digital clock to be legit we need all our numbers to be 2 digits all the time.
Adding a zero in the front would solve that problem. Remember how we said the Javascript can do math? It knows the value of numbers as well, and can determine if a number is greater, less than, or equal to another number.
Within the displayTime function braces, just after our hours , minutes , and seconds variables, make a new line. First, we're using an if statement to only do something if seconds is less than the number We want 8 to become 08 , but we don't want 14 to become Then, we modify the content of the seconds variable, placing a "0" in front of whatever was previously stored in seconds. You can change the content of a variable even after it's initially defined. That's why we call it a variable—because its content can vary.
If it were, basic math would tell us that we'd end up with the same thing. Note that we put quotes around our "0". Quotes mean text content, which we call a string , and strings work differently than numbers. If one of the properties is a string , like "0" , and the other is a number , like our seconds variable was, the number will be converted into a string before the two are appended.
Take a look at the preview. Like a lot of Javascript we can describe this in a sentence. It might sound something like this:. Our team will review it and, if necessary, take action. Sign in to report this app to Microsoft. Report this app to Microsoft. Report this app to Microsoft Potential violation Offensive content Child exploitation Malware or virus Privacy concerns Misleading app Poor performance.
How you found the violation and any other useful info. Submit Cancel. System Requirements Minimum Your device must meet all minimum requirements to open this product OS Windows 10 version Recommended Your device should meet these requirements for the best experience OS Windows 10 version Open in new tab.
Sign me up Stay informed about special deals, the latest products, events, and more from Microsoft Store. Sign up. Thank you! Windows 10 version You don't need to install anything or do anything other than set the alarm.
Try the YouTube Alarm Clock , where you can set a video alarm. If you pick a song from a YouTube video, it can be scheduled to play at your designated wake-up time without having to use an MP3 player or a third-party app. No, this computer alarm clock doesn't work if you close the tab.
However, you don't have to leave the tab as your active window indefinitely. You can switch over to a different tab, and the alarm clock will still function fine, as long as it is open. No, an alarm on the computer won't work if your computer is in sleep mode. However, if just your display is turned off, the Online Alarm Clock will still play on some devices.
If you aren't sure whether your operating system will play the alarm with the display turned off, it is best to leave it on and not risk a late wake-up from your laptop alarm.
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