"Using WebWorker API"
HTML5 provides WebWorker API to perform JS operation on the background so that we can reduce the CPU time and work because some time JS create a web page as responsive due to the huge amount of work performed by CPU.
In HTML "Worker" class is defined to perform JS operation on the background.
.
Here is a simple example for performing the heavy task in the background.
<html> <head>
<script>
var w=null;
function callWorker()
{
if(Worker)
{
w=new Worker("demo.js");
w.onmessage=function(event)
{
document.getElementById("res").innerHTML=event.data;
};
}
else
document.write("Worker Not Supported.........");
}
function stopWorker()
{
if(Worker)
{
w.terminate();
w=null;
}
}
</script>
</head>
<body onLoad="callWorker();">
<h1>Welcome User........</h1>
<h1><div align="center"id="res"></div></h1>
<input type="button" value="Start Worker"onClick="callWorker();">
<input type="button" value="Stop Worker"onClick="stopWorker();">
</body>
</html>
Demo.js
var i=1;
function count()
{
i=i+1;
postMessage(i);
alert("Hello....");
setTimeout("count()",500);
}
count();
"Thanks!!! for Reading"
