鼠标事件产生随机的颜色

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .outer{
            width: 300px;
            height: 300px;
            background-color: #f00;
            overflow: hidden;
        }
        .inner{
            width: 100px;
            height: 100px;
            background-color: #ff0;
            /* margin: 100px; */
        }
    </style>
</head>
<body>

    <div class="outer">
        <div class="inner"></div>
    </div>


    <script>
        // onclick(点击) 
        // ondblclick(双击) 
        // onmousedown(鼠标按钮被按下)   
        // onmouseup(鼠标按钮松开)
            // button属性  鼠标按下和抬起     0左键  1中间键  2右键


        // onmouseenter(鼠标移入) onmouseleave(鼠标移出) // 不支持冒泡

        // onmouseover(鼠标移入) onmouseout(鼠标移出) // 支持冒泡     

        // onmousemove(鼠标移动)

        


        // 鼠标双击
        document.ondblclick = function(){
            console.log('双击666')
        }


        // document.onmousedown = function(e) {
        //     console.log('鼠标按下')
        //     var e = event || e ; 
        //     var btn = e.button ; 
        //     console.log(btn)
        // }


        document.onmouseup = function(e) {
            console.log('鼠标按下')
            var e = event || e ; 
            var btn = e.button ; 
            console.log(btn)
        }


        var oOuter = document.querySelector('.outer');
        var oInner = document.querySelector('.inner');

        // oOuter.onmouseenter = function() {
        //     console.log('outer')
        // }
        // oInner.onmouseenter = function() {
        //     console.log('inner')
        // }


        oOuter.onmouseover = function() {
            console.log('outer')
        }
        oInner.onmouseover = function() {
            // console.log('inner')
            this.style.background = 'blue'
        }

        oOuter.onmouseout = function() {
            console.log('outer')
        }
        oInner.onmouseout = function() {
            console.log('inner')
            this.style.background = 'pink'
        }


        oInner.onmousemove = function(){
            console.log(999)
            this.style.background = randColor()
        }


        function randColor() {
            var r = parseInt(Math.random() * 256) ;
            var g = parseInt(Math.random() * 256) ;
            var b = parseInt(Math.random() * 256) ;
            return `rgb(${r},${g},${b})`
        }


    </script>
</body>
</html>
posted @ 2021-04-09 01:43  干饭吧  阅读(51)  评论(0)    收藏  举报