Jquery增加鼠标中间功能mousewheel的实例代码
代码如下:
(function ($) { var types = ['DOMMouseScroll', 'mousewheel']; $.event.special.mousewheel = { setup: function () { if (this.addEventListener) { for (var i = types.length; i;) { this.addEventListener(types[--i], handler, false); } } else { this.onmousewheel = handler; } }, teardown: function () { if (this.removeEventListener) { for (var i = types.length; i;) { this.removeEventListener(types[--i], handler, false); } } else { this.onmousewheel = null; } } }; $.fn.extend({ mousewheel: function (fn) { return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel"); }, unmousewheel: function (fn) { return this.unbind("mousewheel", fn); } }); function handler(event) { var orgEvent = event || window.event, args = [].slice.call(arguments, 1), delta = 0, returnValue = true, deltaX = 0, deltaY = 0; event = $.event.fix(orgEvent); event.type = "mousewheel"; // Old school scrollwheel delta if (event.originalEvent.wheelDelta) { delta = event.originalEvent.wheelDelta / 120; } if (event.originalEvent.detail) { delta = -event.originalEvent.detail / 3; } // New school multidimensional scroll (touchpads) deltas deltaY = delta; // Gecko if (orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS) { deltaY = 0; deltaX = -1 * delta; } // Webkit if (orgEvent.wheelDeltaY !== undefined) { deltaY = orgEvent.wheelDeltaY / 120; } if (orgEvent.wheelDeltaX !== undefined) { deltaX = -1 * orgEvent.wheelDeltaX / 120; } // Add event and delta to the front of the arguments args.unshift(event, delta, deltaX, deltaY); return $.event.handle.apply(this, args); } })(jQuery); 调用: $(document).mousewheel(function (e, detail) { }
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