CSS
.img-zoom-container {
position: relative;
}
.img-zoom-lens {
position:fixed;
border: 1px solid #d4d4d4;
/*set the size of the lens:*/
width: 50px;
height: 50px;
}
.img-zoom-result {
border: 1px solid #d4d4d4;
/*set the size of the result div:*/
width: 500px;
height: 500px;
}
.img-magnifier-container {
position: relative;
}
.img-magnifier-glass {
position: absolute;
border: 3px solid #000;
border-radius: 25%;
cursor: none;
/*Set the size of the magnifier glass:*/
width: 300px;
height: 300px;
}
JavaScript
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 = 1;
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};
}
}
.dropdown-content { display: none; position: relative; background-color: #0f0f0f; width: 100px; height: 100px; padding: 20px; z-index: 1; } .dropdown:hover .dropdown-content { display: block; width: auto; height: auto; } * {box-sizing: border-box;} span{ color:white; }