【发布时间】：2021-04-01 20:32:32
【问题描述】：
你好 * 世界，
第一篇文章，在这里完成新手！我正在努力与时俱进，研究一些网页设计，因为这个互联网事物显然会继续存在。
有人能告诉我一种隐藏 GIF 的方法（已经只制作了 1 循环）并用图像替换它，这样我就可以使用放大工具了sn-p 我在这里找到的。
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>
<script>
/* Initiate Magnify Function
with the id of the image, and the strength of the magnifier glass:*/
magnify("export-a-product-to-china", 2);* {box-sizing: border-box;}
.img-magnifier-container {
position:relative;
}
.img-magnifier-glass {
position: absolute;
border: 2px solid #000;
border-radius: 50%;
cursor: none;
/*Set the size of the magnifier glass:*/
width: 250px;
height: 250px;
}<div class="img-magnifier-container">
<img id="export-a-product-to-china" src="https://static1.squarespace.com/static/5a27e60318b27d7d0e86bd68/t/5fda32c7b424be58e1607b44/1608135367867/anipro_bw_final.svg" width="960" height="540">
</div>提前非常感谢！
编辑： A Haworth 的以下回答完美而优雅地解决了这个问题（就我和有限的编码知识而言，这是可以理解的）。 感谢他和其他像他一样在这个令人难以置信的网站上的人！
追求知识的真正友情是人类最崇高的待遇之一。老实说，我不敢再希望它退出了。
为新的一年干杯，我希望在这个职位上成长，让我能够像帮助别人一样帮助别人。
【问题讨论】：
标签： javascript html css gif squarespace