JavaScript: Create a clock and display the time in each second
JavaScript Object: Exercise-8 with Solution
Write a JavaScript program to create a clock.
Note: The output will come every second.
Expected Console Output:
"14:37:42"
"14:37:43"
"14:37:44"
"14:37:45"
"14:37:46"
"14:37:47"
Sample Solution:
JavaScript Code:
function my_Clock()
{
this.cur_date = new Date();
this.hours = this.cur_date.getHours();
this.minutes = this.cur_date.getMinutes();
this.seconds = this.cur_date.getSeconds();
}
my_Clock.prototype.run = function ()
{
setInterval(this.update.bind(this), 1000);
};
my_Clock.prototype.update = function ()
{
this.updateTime(1);
console.log(this.hours + ":" + this.minutes + ":" + this.seconds);
};
my_Clock.prototype.updateTime = function (secs)
{
this.seconds+= secs;
if (this.seconds >= 60)
{
this.minutes++;
this.seconds= 0;
}
if (this.minutes >= 60)
{
this.hours++;
this.minutes=0;
}
if (this.hours >= 24)
{
this.hours = 0;
}
};
var clock = new my_Clock();
clock.run();
Output:
14:45:52 14:45:53 14:45:54 14:45:55 14:45:56 14:45:57 14:45:58 14:45:59 14:46:0 -----
Flowchart:
Live Demo:
See the Pen javascript-object-exercise-8 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus.
Previous: Write a JavaScript program which returns a subset of a string.
Next: Write a JavaScript program to calculate the area and perimeter of a circle.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.
https://www.w3resource.com/javascript-exercises/javascript-object-exercise-8.php
- Weekly Trends and Language Statistics
- Weekly Trends and Language Statistics