Question

            $(document).ready(function () {
                var $o, os;

                //generate toolbar
                var $toolbar = $(".toolbar");
                $.each(tools, function (i, tool) {
                    $("<img>", tool).appendTo($toolbar);
                });
                var $tools = $toolbar.find("img");

                //define drag and drop handlers
                $toolbar.on("dragstart", "img", onDrag);
                $(".canvas").on({
                    dragenter: false,
                    dragover: false,
                    drop: onDrop
                });

                //handle commencement of drag
                function onDrag(e) {
                    $o = $(this).clone();
                    var o = e.originalEvent;
                    o.effectAllowed = "copy";
                    os = { X: o.offsetX, Y: o.offsetY };
                }

                //handle drop
                function onDrop(e) {
                    e.preventDefault();
                    var o = e.originalEvent;
                    var pos = { left: o.offsetX - os.X, top: o.offsetY - os.Y };
                    $o.css(pos);
                    $(this).append($o);
                    //***DATABASE example:-
                    // (1) Create dataset, e.g. JSON:-
                    var data = {
                        id: $o.data("id"),
                        description: $o.data("description"),
                        position: pos
                    };
                    // (2) Send (JSON) data to SQL webservice using AJAX POST:-   
                    //$.post("sqlwebservice.ashx", data);
                    return false;
                }
            });

            //define toolset (JSON, e.g. from database)...
            var tools = [{
                "data-id": 1,
                alt: "sun",
                title: "sun",
                src: "http://cdn4.iconfinder.com/data/icons/iconsland-weather/PNG/48x48/Sunny.png",
                "data-description": "sun in photo"
            }, {
                "data-id": 2,
                alt: "snow",
                title: "snow",
                src: "http://cdn4.iconfinder.com/data/icons/iconsland-weather/PNG/48x48/Thermometer_Snowflake.png",
                "data-description": "snow in photo"
            }, {
                "data-id": 3,
                alt: "cloud",
                title: "cloud",
                src: "http://cdn4.iconfinder.com/data/icons/iconsland-weather/PNG/48x48/Overcast.png",
                "data-description": "cloud in photo"
            }, {
                "data-id": 4,
                alt: "rain",
                title: "rain",
                src: "http://cdn4.iconfinder.com/data/icons/iconsland-weather/PNG/48x48/Night_Rain.png",
                "data-description": "rain in photo"
            }];

此脚本在小提琴http://jsfiddle.net/alano/E8rrX/中工作正常。当我把它带到我的本地机器时，原始事件的offsetx和offsety属性将变为未定义。我不得不改为clientx和clienty，但是那些不能以正确的方式工作。有没有人知道为什么当我在我的计算机上运行而不是在小提琴中运行时，offsetx和offsety会变得不确定？

提前致谢...

Answer 1

尝试使用pageX和pageY它适用于 firefox 。希望它适用于您的localhost

jQuery originalevent offsetx属性？

1 个答案: