Javascript 图像缩放放大镜效果在角度模式下无法正常工作
我用angular9创建了一个图像缩放放大效果。我遵循了所有代码的链接 当我运行应用程序时,它的放大镜缩放效果与上面的可运行代码演示完全不同 这是我的密码:-Javascript 图像缩放放大镜效果在角度模式下无法正常工作,javascript,jquery,css,angular,Javascript,Jquery,Css,Angular,我用angular9创建了一个图像缩放放大效果。我遵循了所有代码的链接 当我运行应用程序时,它的放大镜缩放效果与上面的可运行代码演示完全不同 这是我的密码:- <app-home></app-home> <br/><br/> <style> @media only screen and (min-width: 600px) { * {box-sizing: border-box;} .img-zoom-container { p
<app-home></app-home>
<br/><br/>
<style>
@media only screen and (min-width: 600px) {
* {box-sizing: border-box;}
.img-zoom-container {
position: relative;
}
.img-zoom-lens {
position: absolute;
border: 1px solid #d4d4d4;
/*set the size of the lens:*/
width: 75px;
height: 75px;
}
.img-zoom-result {
border: 1px solid #d4d4d4;
/*set the size of the result div:*/
width: 300px;
height: 300px;
}
#myhide {
display: none;
}
.img-zoom-container:hover #myhide {
display:block;
}
}
@media only screen and (max-width: 600px) {
.img-zoom-container:hover #myhide {
display:none;
}
.img-zoom-container {
position: relative;
width: 480px;
height: 320px;
overflow: hidden;
}
.imgid {
position: absolute;
top: 0;
left: 0;
}
.imgid img {
-webkit-transition: 0.6s ease;
transition: 0.6s ease;
}
.img-zoom-container:hover .imgid img {
-webkit-transform: scale(1.9);
transform: scale(1.9);
overflow:show;
}
}
</style>
<div class="row container mt-5 mr-5">
<div class="col-3 mr-2">
//other code
</div>
<div class="col-3">
<div class="img-zoom-container" onmousenter="showme(this)">
<span><p class="imgid" style="align:center;"><img id="myimage" src="./assets/Images/1.jpg" srcset="./assets/Images/1.jpg" width="300" height="200"></p></span>
<span id="myhide" style="float: right;
position: absolute;
top: -100px;
left: 300px;
width: auto;
height: 100%;">
<div id="myresult" class="img-zoom-result" onmouseleave="hideme(this)" >
</div></span>
</div>
</div>
<div class="col-6">
//other code
</div>
</div>
<script>
imageZoom("myimage", "myresult");
function imageZoom(imgID, resultID) {
var img, lens, result, cx, cy;
img = document.getElementById(imgID);
result = document.getElementById(resultID);
/*create lens:*/
lens = document.createElement("DIV");
lens.setAttribute("class", "img-zoom-lens");
/*insert lens:*/
img.parentElement.insertBefore(lens, img);
/*calculate the ratio between result DIV and lens:*/
console.log("result.offsetWidth >>>>>", result.offsetWidth ,"lens.offsetWidth>>>>>>>>>>>",lens.offsetWidth);
cx = 300 / lens.offsetWidth;
console.log("result.offsetHeight>>>>>",result.offsetHeight ,"llens.offsetHeighth>>>>>>>>>>>",lens.offsetHeight);
cy = 300 / lens.offsetHeight;
/*set background properties for the result DIV:*/
result.style.backgroundImage = "url('" + img.srcset + "')";
result.style.backgroundSize = (img.width * cx) + "px " + (img.height * cy) + "px";
/*execute a function when someone moves the cursor over the image, or the lens:*/
lens.addEventListener("mousemove", moveLens);
img.addEventListener("mousemove", moveLens);
/*and also for touch screens:*/
lens.addEventListener("touchmove", moveLens);
img.addEventListener("touchmove", moveLens);
// img.addEventListener("mouseenter", bigImg);
function bigImg(x) {
console.log("onmouseenter >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
}
function normalImg(x) {
//result.style.display ="none";
console.log(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>onmousLEAVE");
}
function moveLens(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);
/*calculate the position of the lens:*/
x = pos.x - (lens.offsetWidth / 2);
y = pos.y - (lens.offsetHeight / 2);
// console.log("x" , x , "and Y " , y);
/*prevent the lens from being positioned outside the image:*/
if (x > img.width - lens.offsetWidth) {x = img.width - lens.offsetWidth; } //else{img.addEventListener("mouseenter", bigImg); }
if (x < 0) {x = 0;}
if (y > img.height - lens.offsetHeight) {y = img.height - lens.offsetHeight; img.addEventListener("mouseleave", normalImg);}//else{img.addEventListener("mouseenter", bigImg); }
if (y < 0) {y = 0;}
/*set the position of the lens:*/
lens.style.left = x + "px";
lens.style.top = y + "px";
/*display what the lens "sees":*/
result.style.backgroundPosition = "-" + (x * cx) + "px -" + (y * cy) + "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();
//console.log("------------------A left" , a );
/*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};
}
}
function hideme(x) {
//x.style.display = "none";
}
function showme(x) {
//x.style.display = "block";
}
</script>
<router-outlet></router-outlet>
@仅介质屏幕和(最小宽度:600px){
*{框大小:边框框;}
.img缩放容器{
位置:相对位置;
}
.img变焦镜头{
位置:绝对位置;
边框:1px实心#d4;
/*设置镜头的大小:*/
宽度:75px;
高度:75px;
}
.img缩放结果{
边框:1px实心#d4;
/*设置结果div的大小:*/
宽度:300px;
高度:300px;
}
#牛皮{
显示:无;
}
.img缩放容器:悬停#myhide{
显示:块;
}
}
@仅介质屏幕和(最大宽度:600px){
.img缩放容器:悬停#myhide{
显示:无;
}
.img缩放容器{
位置:相对位置;
宽度:480px;
高度:320px;
溢出:隐藏;
}
伊姆吉德先生{
位置:绝对位置;
排名:0;
左:0;
}
.imgid img{
-webkit转换:0.6s易用性;
过渡:0.6s缓解;
}
.img缩放容器:hover.imgid img{
-webkit转换:比例(1.9);
转换:比例(1.9);
溢出:显示;
}
}
//其他代码
//其他代码
图像缩放(“我的图像”、“我的结果”);
函数imageZoom(imgID、resultID){
var-img,lens,result,cx,cy;
img=document.getElementById(imgID);
结果=document.getElementById(resultID);
/*创建镜头:*/
lens=document.createElement(“DIV”);
镜头属性(“类”、“img变焦镜头”);
/*插入镜头:*/
img.parentElement.insertBefore(镜头,img);
/*计算结果DIV和镜头之间的比率:*/
console.log(“result.offsetWidth>>>>”,result.offsetWidth,“lens.offsetWidth>>>>>>”,lens.offsetWidth>>>>);
cx=300/镜头。偏移网络宽度;
console.log(“result.offsetHeight>>>>”,result.offsetHeight,“llens.offsetHeight>>>>>>>”,lens.offsetHeight);
cy=300/镜头。离视;
/*设置结果DIV的背景属性:*/
result.style.backgroundImage=“url('”+img.srcset+“)”;
result.style.backgroundSize=(img.width*cx)+“px”+(img.height*cy)+“px”;
/*当有人将光标移动到图像或镜头上时,执行一项功能:*/
lens.addEventListener(“mousemove”,moveLens);
img.addEventListener(“mousemove”,moveLens);
/*以及触摸屏:*/
lens.addEventListener(“触摸移动”,moveLens);
img.addEventListener(“触摸移动”,移动镜头);
//img.addEventListener(“mouseenter”,bigImg);
函数bigImg(x){
console.log(“onMouseCenter>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>”;
}
函数normalImg(x){
//result.style.display=“无”;
控制台日志(“>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>;
}
功能镜头(e){
变量pos,x,y;
/*防止在图像上移动时可能发生的任何其他操作:*/
e、 预防默认值();
/*获取光标的x和y位置:*/
pos=getCursorPos(e);
/*计算透镜的位置:*/
x=位置x-(镜头偏移宽度/2);
y=位置y-(镜头离视/2);
//控制台日志(“x”,x,“和Y”,Y);
/*防止镜头位于图像外部:*/
如果(x>img.width-lens.offsetWidth){x=img.width-lens.offsetWidth;}//否则{img.addEventListener(“mouseenter”,bigImg);}
如果(x<0){x=0;}
如果(y>img.height-lens.offsetHeight){y=img.height-lens.offsetHeight;img.addEventListener(“mouseleave”,normalImg);}//否则{img.addEventListener(“mouseenter”,bigImg);}
如果(y<0){y=0;}
/*设置镜头的位置:*/
lens.style.left=x+“px”;
lens.style.top=y+“px”;
/*显示镜头“看到”的内容:*/
result.style.backgroundPosition=“-”+(x*cx)+“px-”+(y*cy)+“px”;
}
函数getCursorPos(e){
变量a,x=0,y=0;
e=e | | window.event;
/*获取图像的x和y位置:*/
a=img.getBoundingClientRect();
//console.log(“-----------------A左”,A);
/*计算光标相对于图像的x和y坐标:*/
x=e.pageX-a.左;
y=e.pageY-a.top;
/*考虑任何页面滚动:*/
x=x-window.pageXOffset;
y=y-window.pageYOffset;
返回{x:x,y:y};
}
}
函数hideme(x){
//x、 style.display=“无”;
}
函数showme(x){
//x、 style.display=“block”;
}
当我将鼠标悬停时,我发现右侧有一个阴影边框。但这是出乎意料的。我不想要框阴影。对于没有jQuery的角度方法,请这样看:?角度增加了您不需要的开销。@jqueryHtmlCSS,通常使用角度和jQuery这不是一个好主意,但当然,您可以使用您觉得更舒服的技术来解决问题