<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script type="text/javaScript" src="./hello.js"></script>
<script>
var num = 3;
if (num === 3) {
console.log(num++);//3
var result = num++;
console.log(result)//4
}
</script>
</body>
</html>老师，您好，请问一下，为什么这个语句，++在后也能重新赋值，结果为4的？
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