求用鼠标滚轮实现图片缩放及用鼠标拖放功能的代码或插件 演示:http://dankong.5d6d.com/thread-953-1-3.html求用鼠标滚轮实现图片缩放及用鼠标拖放功能的代码或插件(如示意网址所示) 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 jquery 鼠标滚轮插件mousewheel<script> var intOverallDelta = 0; $("#divScroll").mousewheel(function(objEvent, intDelta){ if (intDelta > 0){ intOverallDelta++; $("#divScroll").html('up - (' + intOverallDelta + ')'); } else if (intDelta < 0){ intOverallDelta--; $("#divScroll").html('down - (' + intOverallDelta + ')'); } }); </script>/** * * credits for this plugin go to brandonaaron.net * * unfortunately his site is down * * @param {Object} up * @param {Object} down * @param {Object} preventDefault */jQuery.fn.extend({ mousewheel: function(up, down, preventDefault) { return this.hover( function() { jQuery.event.mousewheel.giveFocus(this, up, down, preventDefault); }, function() { jQuery.event.mousewheel.removeFocus(this); } ); }, mousewheeldown: function(fn, preventDefault) { return this.mousewheel(function(){}, fn, preventDefault); }, mousewheelup: function(fn, preventDefault) { return this.mousewheel(fn, function(){}, preventDefault); }, unmousewheel: function() { return this.each(function() { jQuery(this).unmouseover().unmouseout(); jQuery.event.mousewheel.removeFocus(this); }); }, unmousewheeldown: jQuery.fn.unmousewheel, unmousewheelup: jQuery.fn.unmousewheel});jQuery.event.mousewheel = { giveFocus: function(el, up, down, preventDefault) { if (el._handleMousewheel) jQuery(el).unmousewheel(); if (preventDefault == window.undefined && down && down.constructor != Function) { preventDefault = down; down = null; } el._handleMousewheel = function(event) { if (!event) event = window.event; if (preventDefault) if (event.preventDefault) event.preventDefault(); else event.returnValue = false; var delta = 0; if (event.wheelDelta) { delta = event.wheelDelta/120; if (window.opera) delta = -delta; } else if (event.detail) { delta = -event.detail/3; } if (up && (delta > 0 || !down)) up.apply(el, [event, delta]); else if (down && delta < 0) down.apply(el, [event, delta]); }; if (window.addEventListener) window.addEventListener('DOMMouseScroll', el._handleMousewheel, false); window.onmousewheel = document.onmousewheel = el._handleMousewheel; }, removeFocus: function(el) { if (!el._handleMousewheel) return; if (window.removeEventListener) window.removeEventListener('DOMMouseScroll', el._handleMousewheel, false); window.onmousewheel = document.onmousewheel = null; el._handleMousewheel = null; }}; 发一个自己写的PHP树类 tree for php php调用.net写的webservice,出现stdClass Object discuz x2.0中想启用子目录 如何稍微修改 mediawiki,增加IP统计(统计访问次数)和每个页面都可以回复的功能 什么是框架,有什么用? 帮我看看这段代码哪错了 老说我上传失败 如何在地方门户网站上做手机话费充值啊? kindeditor 上传图片失败 linux apache 服务器 中问的文件名下载 404 但是在ie中可以 php 阿里云OSS 图片上传 下载 与管理 创新,创业,创富(北京海淀) 高手的进来看看吧
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