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老师批语：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>DOM</title>
</head>
<body>
<script type="text/javascript">
function qc() {
var jieguo="";
var arr=["宝马","奔驰","奥迪"]
for (var i =0; i<arr.length; i++) {
jieguo+= arr[i] + "<br>"
}
document.getElementById('ce').innerHTML=jieguo;
}
</script>
<button onclick="qc()">选汽车</button>
<p id="ce"></p>
</body>
</html>点击 "运行实例" 按钮查看在线实例
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