lovecoding
/
class


			
				
					
						
						
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							<!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>
    <div id="box1">12</div>
    <script>
        var box1 = document.getElementById("box1");

        // 点击事件 this指向当前点击对象
        box1.onclick = function() {
            console.log(this);
        }

        // 定时器 this指向window
        // var timer = setInterval(()=>{
        //     console.log(this,'定时器')
        // },1000)

        // 对象中 当前对象
        var person = {
            name:"孙悟空",
            age:18,
            say:function() {
                console.log(this);
            }
        }
        person.say();

        // 函数 this指向window
        function fn1() {
            console.log(this);
        }
        fn1()
    </script>
</body>
</html>