<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var age=
3;
if(
age<
6) {
alert(
'宝宝')
}
else if(
age<
12) {
alert(
'儿童')
}
else if(
age<
18) {
alert(
'青少年')
}
else if(
age<
35) {
alert(
'成年')
}
</script>
</body>
</html>
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