jquery-放大镜

发布时间:2020-07-08 05:27:17 作者:素颜猪
来源:网络 阅读:329

效果图

jquery-放大镜

jquery-放大镜

代码部分

html内容:

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta http-equiv="X-UA-Compatible" content="IE=edge">

<title>放大镜</title>

</head>

<body>

<div id="container">

<!-- 原图层容器 -->

<div id="small-container">

<div id="mark-container"></div>

<div id="float-container"></div>

<img src="macbook-small.jpg" alt="">

</div>


<!-- 大图层容器 -->

<div id="big-container">

<img src="macbook-big.jpg" alt="">

</div>

</div>

</body>

</html>


css样式:

<style>

/*

最外层容器id=demo

*/

#container{

display: block;

width: 400px;

height: 400px;

margin: 50px;

position: relative;

border: 1px solid #ccc;

}


/*

原图容器id=small-Container

*/

#small-container{

position: relative;

z-index: 1;

}


/*

原图上的图层id=mark-container

*/

#mark-container{

position: absolute;

display: block;

width: 400px;

height: 400px;

background-color: #FFF;

opacity: 0;

z-index: 2;

cursor: move;

}


/*

原图上的移动图层id=float-Container

*/

#float-container{

display: none;

width: 200px;

height: 200px;

position: absolute;

background-color: #F5F5DC;

border: 1px solid #ccc;

filter:alpha(opacity=50);

opacity: 0.5;

}


/*

大图容器id=big-Container

*/

#big-container{

display: none;

position: absolute;

top: 0;

left: 420px;

width: 460px;

height: 460px;

overflow: hidden;

border: 1px solid #ccc;

z-index: 1;

}


/*

大图片

*/

#big-container img{

position: absolute;

z-index: 2;

}

</style>


script脚本:

<script src="jquery-1.9.1.min.js"></script>

<script>

$(function(){

var objContainer = $("#container");

var objSmallContainer = $("#small-container");

var objMarkContainer = $("#mark-container");

var objFloatContainer = $("#float-container");

var objBigContainer = $("#big-container");

var objBigImage = $(objBigContainer).children('img');


//鼠标移入事件

$(objMarkContainer).mouseover(function(event) {

$(objFloatContainer).css({

display: 'block'

});


$(objBigContainer).css({

display: 'block'

});

});


//鼠标移出事件

$(objMarkContainer).mouseout(function(event) {

$(objFloatContainer).css({

display: 'none'

});


$(objBigContainer).css({

display: 'none'

});

});


//鼠标移动事件

$(objMarkContainer).mousemove(function(event) {

var _event = event || window.event;


var clientX = _event.clientX;

var clientY = _event.clientY;


var objContainerOffsetLeft = $(objContainer).offset().left;

var objContainerOffsetTop = $(objContainer).offset().top;


var objSmallContainerOffsetLeft = $(objSmallContainer).offset().left;

var objSmallContainerOffsetTop = $(objSmallContainer).offset().top;


var objFloatContainerWidth = $(objFloatContainer).outerWidth();

var objFloatContainerHeight = $(objFloatContainer).outerHeight();


var objMarkContainerWidth = $(objMarkContainer).outerWidth();

var objMarkContainerHeight = $(objMarkContainer).outerHeight();


var objBigContainerWidth = $(objBigContainer).outerWidth();

var objBigContainerHeight = $(objBigContainer).outerHeight();


var objBigImageWidth = $(objBigImage).outerWidth();

var objBigImageHeight = $(objBigImage).outerHeight();


var left = clientX - objContainerOffsetLeft - objSmallContainerOffsetLeft - objFloatContainerWidth / 2;

var top = clientY - objContainerOffsetTop - objSmallContainerOffsetTop - objFloatContainerHeight / 2;


if (left < 0) {

left = 0;

}else if (left > (objMarkContainerWidth - objFloatContainerWidth)) {

left = objMarkContainerWidth - objFloatContainerWidth;

}


if (top < 0) {

top = 0;

}else if (top > (objMarkContainerHeight - objFloatContainerHeight)) {

top = objMarkContainerHeight - objFloatContainerHeight;

}

$(objFloatContainer).css({

left: left + 'px',

top: top + 'px'

});


var percentX = left / (objMarkContainerWidth - objFloatContainerWidth);

var percentY = top / (objMarkContainerHeight - objFloatContainerHeight);


$(objBigImage).css({

left: (-percentX * (objBigImageWidth - objBigContainerWidth)) + 'px',

top: (-percentY * ( objBigImageHeight - objBigContainerHeight)) + 'px'

});

});

});

</script>

jquery-放大镜

附件:http://down.51cto.com/data/2368484
推荐阅读:
  1. JS实现放大镜效果
  2. 强大的JQuery-自定义插件

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