How to make STOPWATCH using HTML CSS and JAVASCRIPT

JavaScript stop watch or rather stop down timer can be implemented using the JavaScript timing methods which are executed in time intervals.

JavaScript timing methods automate a particular task to be done on the fly without you having to click a button or call an event.

JavaScript timing is made up of two key methods:

setTimeout( "javascript expression", milliseconds );
clearTimeout( ID of setTimeout( ) );
When using the JavaScript timing methods, you need to understand how JavaScript executes statements in time intervals.

The setTimeout( ) Method

Syntax:

setTimeout( "JavaScript Statements", milliseconds );
The setTimeout( ) JavaScript timing method takes only two parameters:

first parameter: this parameter is the JavaScript statements you want to execute. A string function name can also be passed to it.
second parameter: specifies the milliseconds it is going to take before executing the JavaScript statements in the first parameter. It can simply be referred to as ( Delay On Execution ).
Example : Structure Of The setTimeout( ) Method

var setTime = setTimeout( function ( ) {
// javascript statements }, 500 ); Or var setTime = setTimeout( "setTimeFunction( )", 500 );
Example: Calculating Milliseconds

To work with the JavaScript event timing methods, it's very important you understand how to calculate milliseconds.

You have one second ( 1s ) in one thousand milliseconds ( 1000ms )

Milliseconds Formulae

1000ms = 1s Yms = Xs if 1000ms = 1s 300ms = Xs #cross multiplying 1000ms * Xs = 300ms * 1s X * 1000 = 300 * 1 1000X = 300 X = 300 / 1000 X = 0.3s
This means 300 milliseconds = 0.3 seconds, not up to one second (1s). Your JavaScript statements will be executed in time interval of 0.3 seconds (0.3s).

Creating A Stop Watch

Using the JavaScript timing event methods, we can create our stop watch.

#EasyStopwatch
#SimpleCode
#HtmlCssJavascript