lovecoding
/
web0715


			
				
					
						
						
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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>
    <h1>hello</h1>
    <h1>world</h1>
    <script>
        var oH1 = document.getElementsByTagName("h1");
        // 鼠标点击事件（单击）
        oH1[0].onclick = function(){
            // console.log("hello world")
            // oH1[0].innerText = "你好";
            this.innerText = "hello world";
        }
        // 鼠标右键
        var oBody = document.getElementsByTagName("body")[0];
        oBody.oncontextmenu = function(){
            console.log("hello");
            // return false 在事件处理函数当中可以阻止浏览器的默认行为
            return false;
        }

        // 鼠标滑入
        // 鼠标移入滑动时频繁触发
        // oH1[1].onmousemove = function(){
        //     console.log("mouseover")
        // }
        // 鼠标移入仅触发一次
        // oH1[1].onmouseenter = function(){
        //     console.log("mouseenter")
        // }

    </script>
</body>
</html>