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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
var var_string;
var_string = "Hello jquery!";
for(var i=0;i<var_string.length;i++)
{
alert( var_string.charAt(i) );
} 
});
</script>
</head>
<body>
</body>
</html> 
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