javascript - 在 Raphael/JavaScript 中选择节点

Question

下面的代码大部分都可以工作(感谢几天前的一个很好的回答!)除了最后一点之外:

things.square[1].node.setAttribute("id","clicker");
$("#clicker").click(function(){
    $("#canvas_things1").fadeOut();
    $("#canvas_things2").fadeIn();
});

我认为问题出在这一行:

things.square[1].node.setAttribute("id","clicker");

我本以为 square[1].node 可以工作，但似乎不行。有人能发现问题所在吗？

<script type="text/javascript" charset="utf-8">
    $("document").ready(function() {
        var RM  = Raphael("canvas", 1000, 500);

        var attr = {     // for the visible shapes
            fill: "#bbb",      "fill-opacity": 1,
            stroke: "#222",    "stroke-width": 0.3,
        };
        var attr2 = {    // for the invisible hovering areas
            fill: "green",     "fill-opacity": 0.0,
            stroke: "red",     "stroke-width": 0,
        };
        var things = {};
        /* Square */    things.square     = [ RM.path("m 154.21525,71.431259 74.32805,0 0,70.496711 -74.32805,0 0,-70.496711 z").attr(attr),
                                              RM.path("m 271.25132,77.933263 58.07304,0 0,56.409037 -58.07304,0 0,-56.409037 z").attr(attr2)   ];
        /* Triangle */  things.triangle   = [ RM.path("m 154.02932,222.44063 36.78089,-58.23641 34.48208,58.2364 -71.26297,1e-5").attr(attr),
                                              RM.path("m 271.25132,165.71032 58.07304,0 0,56.40903 -58.07304,0 0,-56.40903 z").attr(attr2)   ];
        for (var shape in things) {
            shape[0].color = Raphael.getColor();
            (function (shape, sh) {
                shape[1][0].onmouseover = function () {
                    shape[0].animate({fill:shape[0].color, stroke:"#ccc"}, 500);
                    document.getElementById(sh)[0].style.display = "block";
                    shape[0].toFront();   R.safari();
                };
                shape[1][0].onmouseout = function () {
                    shape[0].animate({fill:"#bbb", stroke:"#222"}, 500);
                    document.getElementById(sh)[0].style.display = "none";
                    shape[0].toFront();   R.safari();
                };
            })(things[sh], sh);
        } // end for every member of things

        things.square[1].node.setAttribute("id","clicker");
        $("#clicker").click(function(){
            $("#canvas_things1").fadeOut();
            $("#canvas_things2").fadeIn();
        });

    }); // end the document ready function
</script>

Answer 1

id 属性设置正确。

<强> Try it out with this jQuery (click on the 1st red square)

注意，我必须删除你的 for 循环。这是因为自执行匿名函数由于使用 undefined variable 调用而导致运行时错误。

sh 从未定义，但在这里使用:

        })(things[sh], sh);                               // sh is never defined!
    } // end for every member of things

我会替换 for 循环，但我不明白你要做什么。

无论如何，我建议使用 Raphael 自定义事件处理程序 .hover()。

<小时/>

PS:注意你不必要的昏迷(你有 4 个):

    stroke: "#222",    "stroke-width": 0.3,                 // <== Trailing comma
};