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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script>
$(document).ready(function() {
$("h1").each(function(index) {
$(this).addClass("high_light_" + index);
console.log(index);
});
});
</script>
<style>
.high_light_0 {
background-color: yellow;
}
.high_light_1 {
background-color: orange;
}
.high_light_2 {
background-color: blue;
}
.high_light_3 {
background-color: green;
}
.high_light_4 {
background-color: red;
}
</style>
<title>Document</title>
</head>
<body>
<h1>item - 0</h1>
<h1>item - 1</h1>
<h1>item - 2</h1>
<h1>item - 3</h1>
<h1>item - 4</h1>
</body>
</html>
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