arg必须为最后一个参数
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
<script>
// function show(a, b, ...arg, c) {
// alert(arg);
// }
function show(a, b, ...arg) {
alert(arg);
}
show(12, 5, 8, 31, 57, 26, 91);
</script>
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<body>
</body>
</html>









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