<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>数组遍历</title>
</head>
<body>
<script>
//补充代码
var arr = ["HTML", "CSS", "JavaScript", "HTML5", "CSS3"];
for (var i =0;i<arr.length;i++){
document.write(arr[i]+"<br/>");
}
</script>
</body>
</html>
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