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@@ -0,0 +1,29 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ /**
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+ * rest 用于获取函数中的实参 就是替代arguments的
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+ */
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+ function fn1(...rest) {
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+ console.log(arguments,'实参1');
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+ console.log(...arguments,'实参2');
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+ console.log(rest,'4');
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+ console.log(...rest,'3');
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+ }
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+ fn1(1,2,3,4,5,6);
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+
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+ function fn2(a,b,...c) {
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+ console.log(a);//2
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+ console.log(b);//3
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+ console.log(...c); // 4,5,6,7,8,9,0,9999
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+ }
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+ fn2(2,3,4,5,6,7,8,9,0,9999);
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+ </script>
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+</body>
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+</html>
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