<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
* {box-sizing: border-box;}
.img-magnifier-container {
position:relative;
}
.img-magnifier-glass {
position: absolute;
border: 3px solid #000;
border-radius: 50%;
cursor: none;
/*Set the size of the magnifier glass:*/
width: 100px;
height: 100px;
}
</style>
<script>
function magnify(imgID, zoom) {
var img, glass, w, h, bw;
img = document.getElementById(imgID);
/*create magnifier glass:*/
glass = document.createElement("DIV");
glass.setAttribute("class", "img-magnifier-glass");
/*insert magnifier glass:*/
img.parentElement.insertBefore(glass, img);
/*set background properties for the magnifier glass:*/
glass.style.backgroundImage = "url('" + img.src + "')";
glass.style.backgroundRepeat = "no-repeat";
glass.style.backgroundSize = (img.width * zoom) + "px " + (img.height * zoom) + "px";
bw = 3;
w = glass.offsetWidth / 2;
h = glass.offsetHeight / 2;
/*execute a function when someone moves the magnifier glass over the image:*/
glass.addEventListener("mousemove", moveMagnifier);
img.addEventListener("mousemove", moveMagnifier);
/*and also for touch screens:*/
glass.addEventListener("touchmove", moveMagnifier);
img.addEventListener("touchmove", moveMagnifier);
function moveMagnifier(e) {
var pos, x, y;
/*prevent any other actions that may occur when moving over the image*/
e.preventDefault();
/*get the cursor's x and y positions:*/
pos = getCursorPos(e);
x = pos.x;
y = pos.y;
/*prevent the magnifier glass from being positioned outside the image:*/
if (x > img.width - (w / zoom)) {x = img.width - (w / zoom);}
if (x < w / zoom) {x = w / zoom;}
if (y > img.height - (h / zoom)) {y = img.height - (h / zoom);}
if (y < h / zoom) {y = h / zoom;}
/*set the position of the magnifier glass:*/
glass.style.left = (x - w) + "px";
glass.style.top = (y - h) + "px";
/*display what the magnifier glass "sees":*/
glass.style.backgroundPosition = "-" + ((x * zoom) - w + bw) + "px -" + ((y * zoom) - h + bw) + "px";
}
function getCursorPos(e) {
var a, x = 0, y = 0;
e = e || window.event;
/*get the x and y positions of the image:*/
a = img.getBoundingClientRect();
/*calculate the cursor's x and y coordinates, relative to the image:*/
x = e.pageX - a.left;
y = e.pageY - a.top;
/*consider any page scrolling:*/
x = x - window.pageXOffset;
y = y - window.pageYOffset;
return {x : x, y : y};
}
}
</script>
</head>
<body>
<p>Mouse over the image:</p>
<div class="img-magnifier-container">
<img id="myimage" src="https://lh3.googleusercontent.com/C07Jx1HcnAiXyAZNsp0E7wXHGiA9E9Tr5oEPQT3VkU3WSCOIOOBBEL3Sk8sEk-MjFJx0fw=s163" width="600" height="400">
</div>
<script>
/* Initiate Magnify Function
with the id of the image, and the strength of the magnifier glass:*/
magnify("myimage", 3);
</script>
</body>
</html>
4条答案
按热度按时间2ul0zpep1#
您可以用途：
2cmtqfgy2#
为此，您需要使用游标文件
.cur，而不是.gif文件，因此它将类似于上面是当你想使用自定义光标使用
.cur文件。如果你对浏览器提供的默认光标没有问题，你可以简单地使用下面的。vhmi4jdf3#
根据caniuse.com，相关浏览器现在都支持
cursor: zoom-in;，当然除了IE。IE的使用率下降到6.1%，在w3schools...时钟的一个'滴答IE！t98cgbkg4#
我已经想出了一种方法，使光标的图像工作，但它从来没有作为一个光标工作