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display element depend on mousmove X cordinate.
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <div class="head_images" style="width: 891px;"> | |
| <img src="images/bryan_vink_1.jpg"/> | |
| <img src="images/bryan_vink_2.jpg"/> | |
| <img src="images/bryan_vink_3.jpg"/> | |
| <img src="images/bryan_vink_4.jpg"/> | |
| </div> | |
| <script type="text/javascript"> | |
| jQuery(function() { | |
| var switcher = jQuery(".head_images").mousemove_switch({ | |
| switchItems: jQuery(".head_images img") | |
| }); | |
| switcher.instance().start(); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| (function ($, window, document, undefined) { | |
| var pluginName = "mousemove_switch", | |
| defaults = { | |
| switchItems: jQuery("body") | |
| }; | |
| function Plugin(element, options) { | |
| this.element = element; | |
| this.options = $.extend({}, defaults, options); | |
| this._defaults = defaults; | |
| this._name = pluginName; | |
| this.init(); | |
| } | |
| Plugin.prototype = { | |
| init: function () { | |
| }, | |
| start: function () { | |
| var total_switch_items = this.options.switchItems.size(); | |
| var container_width = jQuery(this.element).width(); | |
| var per_item_space = container_width / total_switch_items; | |
| var switchItems = this.options.switchItems; | |
| switchItems.filter(":gt(0)").hide(); | |
| jQuery(this.element).on("mousemove", function (e) { | |
| var x = e.pageX - jQuery(this).offset().left; | |
| var y = e.pageY - jQuery(this).offset().top; | |
| var showIndex = calculateIndex(x); | |
| console.log(showIndex); | |
| switchItems.filter(":eq(" + showIndex + ")").show(); | |
| switchItems.not(":eq(" + showIndex + ")").hide(); | |
| }); | |
| function calculateIndex(x) { | |
| var ratio = x / container_width; | |
| var index = Math.ceil(((ratio * container_width) / per_item_space)) - 1; | |
| if (index > total_switch_items - 1) { | |
| return total_switch_items - 1 | |
| } | |
| if (index < 0) { | |
| return 0; | |
| } | |
| return index; | |
| } | |
| }, | |
| stop: function () { | |
| jQuery(this.element).off("mousemove"); | |
| } | |
| }; | |
| $.fn[pluginName] = function (options) { | |
| return $.extend(this.each(function () { | |
| }), { | |
| instance: function () { | |
| if (!$.data(this, "plugin_" + pluginName)) { | |
| $.data(this, "plugin_" + pluginName, new Plugin(this, options)); | |
| } | |
| return $.data(this, "plugin_" + pluginName) | |
| } | |
| }); | |
| }; | |
| })(jQuery, window, document); |
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