Var seconds = String(countDownTime % 60) Var minutes = String(unc(countDownTime / 60)) Displaying the countdown directly in seconds is less readable, hence will generate the countdown string in “MM:SS” format and append zeros for single-digit values.
#ALARM 45 MINUTES CODE#
Creating separate functions allows for the reuse of the code and makes it easier to modify/add existing functionalities.įirst, we will create a function to generate the countdown string which requires remaining time in seconds. Function to Generate countdown stringīefore we add any JavaScript functionality to the app, we need to create JavaScript functions to support countdown timer functionalities. 30-min Countdown timer with HTML and CSS code 3. For CSS code for timer and buttons please refer “Final solution code” section at the end of this article. Once we are displaying the minutes and seconds of the count, now we will add HTML buttons for the start, stop and reset actions of the timer.
Add buttons for start, stop and reset actions Additionally, we also add a “:” separator to divide minutes and seconds timing. For 30 minutes countdown, we need 4 digits with 2 each to display minutes and seconds remaining in the countdown. The first step is to create HTML element for every digit that needs to be display in the countdown clock. 30-second Countdown Timer in JavaScript 1.
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