JavaScript Nested Loop using for

Code:

<script>

var flag = 0;

var prime = "";

for(var i=3;i<=100;i++)

{

for(j=3;j<i;j++){

if(((i%2)==0)||((i%j)==0)){

flag = 1;

}

}

if(flag==0){

prime += i+",";

}

var flag = 0;

}

document.write(prime);

</script>

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