55 lines
1.8 KiB
HTML
55 lines
1.8 KiB
HTML
{// 点击图片放大}
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<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">
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<div id="innerdiv" style="position: absolute">
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<img id="bigimg" style="border: 5px solid #fff" src="" />
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</div>
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</div>
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<script type="text/javascript">
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$(function () {
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$(".photos").on("click", "img", function () {
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var _this = $(this);
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imgShow("#outerdiv", "#innerdiv", "#bigimg", _this);
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});
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});
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function imgShow(outerdiv, innerdiv, bigimg, _this) {
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var src = _this.attr("src");
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$(bigimg).attr("src", src);
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$("<img/>")
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.attr("src", src)
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.on("load", function () {
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var windowW = $(window).width();
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var windowH = $(window).height();
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var realWidth = this.width;
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var realHeight = this.height;
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var imgWidth, imgHeight;
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var scale = 0.8;
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if (realHeight > windowH * scale) {
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//判断图片高度
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imgHeight = windowH * scale;
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imgWidth = (imgHeight / realHeight) * realWidth;
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if (imgWidth > windowW * scale) {
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//如宽度扔大于窗口宽度
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imgWidth = windowW * scale;
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}
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} else if (realWidth > windowW * scale) {
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imgWidth = windowW * scale;
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imgHeight = (imgWidth / realWidth) * realHeight;
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} else {
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//如果图片真实高度和宽度都符合要求，高宽不变
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imgWidth = realWidth;
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imgHeight = realHeight;
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}
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$(bigimg).css("width", imgWidth);
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var w = (windowW - imgWidth) / 2;
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var h = (windowH - imgHeight) / 2;
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$(innerdiv).css({ top: h, left: w });
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$(outerdiv).fadeIn("fast");
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});
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$(outerdiv).click(function () {
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//再次点击淡出消失弹出层
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$(this).fadeOut("fast");
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});
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}
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</script>
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