Question

我在画布中有一个矩形，每当鼠标移动时我都想做些什么将鼠标悬停在该矩形上。

使用我的代码mousemove仅在鼠标缓慢移动时触发，但我也想在快速移动时触发mousemove。

<!DOCTYPE html>
<html lang="en">
<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>Document</title>
    <style>
        *{
            box-sizing: border-box ;
            padding: 0;
            margin: 0;
        }
        html,body{
            height: 100%;
        }
    </style>
</head>
<body>
    <canvas></canvas>
    <script src="anime.min.js"></script>
    <script>
        let canvas = document.querySelector('canvas') ;
        canvas.width = window.innerWidth ;
        canvas.height = window.innerHeight  ;
        let rectX = canvas.width/2; 
        let rectY = 0 ;
        let rectWidth = 10 ;
        let rectHeight = canvas.height ;
        let ctx = canvas.getContext('2d') ;
        ctx.beginPath() ;
        ctx.rect(rectX,rectY,rectWidth,rectHeight) ;
        ctx.fillStyle = 'black' ;
        ctx.fill() ;
        canvas.addEventListener('mousemove',function(e){
            if(e.x >= rectX && e.x <= rectX+rectWidth) {
                console.log('overlap') ;
            }
        });
    </script>
</body>
</html>

mousemove事件不会在快速鼠标移动时触发

0 个答案: