通过onmousewheel实现图片的放大与缩小问题,继续滚动滚轮继续放大
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
#pic{ width:135px; height:240px; margin:0 auto;}
#pic img{width:135px; height:240px;}
</style>
</head>
<body>
<div id="pic">
<img src="123.JPG">
<script>
var pic=document.getElementById("pic")
pic.onmousewheel=function(event){
//alert(event.wheelDelta)
if(event.wheelDelta>0){
pic.style.transform="scale(2,2)";
}
else if(event.wheelDelta<0){
pic.style.transform="scale(1,1)"
}
}
</script>
</div>
</body>
</html>
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1回答
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JavaScript