how to call javascript function automatically after some time






<!DOCTYPE html>
<html>
<body>

<button onclick="myFunction()">Try it</button>

<script>
function myFunction() {

var file = ["a","b","c","d"];

var myTimer;
var j = 0;
myTimer = setInterval(function() {
alert('hi');

j++;

for(var i = 0; i < 5; i++)
{
alert('i= '+i);
}

alert(j+'and'+file[j]);

if(file[j] == 'c'){
clearInterval( myTimer );
}
}, 1000);

}

</script>

</body>
</html>

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