js代码如上
<script type="text/javascript">
$(function() {
$(".layui-tab-content div img").click(function() {
var _this = $(this);//将当前的pimg元素作为_this传入函数
imgShow("#outerdiv", "#innerdiv", "#bigimg", _this);
});
});
function imgShow(outerdiv, innerdiv, bigimg, _this) {
var src = _this.attr("src");//获取当前点击的pimg元素中的src属性
$(bigimg).attr("src", src);//设置#bigimg元素的src属性
/!*获取当前点击图片的真实大小,并显示弹出层及大图*!/
$("<img/>").attr("src", src).load(function() {
var windowW = $(window).width();//获取当前窗口宽度
var windowH = $(window).height();//获取当前窗口高度
var realWidth = this.width;//获取图片真实宽度
var realHeight = this.height;//获取图片真实高度
var imgWidth, imgHeight;
var scale = 0.8;//缩放尺寸,当图片真实宽度和高度大于窗口宽度和高度时进行缩放
if (realHeight > windowH * scale) {
imgHeight = windowH * scale;
imgWidth = imgHeight /realHeight*realWidth;
if (imgWidth > windowW * scale) {
imgWidth = windowW * scale;
}
} else if (realWidth > windowW * scale) {
imgWidth = windowW * scale;
imgHeight = imgWidth/realWidth*realHeight;
} else {
imgWidth = realWidth;
imgHeight = realHeight;
}
$(bigimg).css("width", imgWidth);//以最终的宽度对图片缩放
var w = (windowW - imgWidth)/2;// 计算图片与窗口左边距
var h = (windowH - imgHeight)/2;// 计算图片与窗口上边距
$(innerdiv).css({
"top" : h,
"left" : w
});//设置#innerdiv的top和left属性
$(outerdiv).fadeIn("fast");//淡入显示#outerdiv及.pimg
});
$(outerdiv).click(function() {
$(this).fadeOut("fast");
});
}
</script>
html 代码:
<div id="outerdiv"
style="position: fixed; top: 0; left: 0; background: rgba(0, 0, 0, 0.7); z-index: 2; width: 100%; height: 100%; display: none;">
<div id="innerdiv" style="position: absolute;">
<img id="bigimg" style="border: 5px solid #fff;" src=""/>
</div>
</div>