1、结论
JavaScript对象普通键（非指向函数的键）this指向是window。
2、示例
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>JavaScript对象this指向(普通键this指向 非指向函数的键)</title>
</head>
<body>
<script type="text/javascript">
var a=1;
var b = {
a: 2,
c: this.a + 10,
d: eval(console.log(this)),
getA: function() {
console.log(this.a);
}
};
//setTimeout的this指向window,相当于window.setTimeout
setTimeout(b.getA, 10); //1
//this指向window
console.log(b.c); //11
//this指向b对象
b.getA(); //2
</script>
</body>
</html>
输出：
