我正在使用 John Emerson 的世界地图按纬度/经度绘制一些度假目的地。如果我对所有内容进行硬编码,我可以将鼠标悬停在上面并单击该点,这将显示假期标题。但是,由于尝试通过检索 JSON 来动态绘制我的目的地,我无法再单击。任何 JavaScript 专家都可以帮助我找出我做错了什么吗?
这是我的代码:
window.onload = function () {
var current = null;
var map = {};
var m = {};
var attr = {
fill: "#333",
stroke: "#888",
"stroke-width": .5,
"stroke-linejoin": "round"
};
var map = {};
var R = Raphael("holder_570");
render_map(R,map,attr);
for (var state in map) {
map[state].color = Raphael.getColor();
(function (st, state) {
st[0].style.cursor = "pointer";
st[0].onmouseover = function () {
current && map[current].animate({fill: "#333", stroke: "#666"}, 300);
// st.animate({fill: st.color, stroke: "#ccc"}, 300);
R.safari();
// current = state;
};
st[0].onmouseout = function () {
st.animate({fill: "#333", stroke: "#666"}, 300);
R.safari();
};
// st[0].onclick = function () {
// alert(state);
// };
})(map[state], state);
}; // end for
function lon2x(lon) {
var xfactor = 1.5255;
var xoffset = 263.58;
var x = (lon * xfactor) + xoffset;
return x;
}
function lat2y(lat) {
var yfactor = -1.5255;
var yoffset = 130.5;
var y = (lat * yfactor) + yoffset;
return y;
}
var city_attr = {
fill: "#0f0",
stroke: "none",
opacity: .3
};
function plot(lat,lon,size) {
size = size * .5 + 4;
return R.circle(lon2x(lon), lat2y(lat), size).attr(city_attr);
}
var vacations = {};
$.getJSON("/vacations_lat_long", function(data) {
var datum, _i, _len, _results;
_results = [];
for (_i = 0, _len = data.length; _i < _len; _i++) {
datum = data[_i];
_results.push(vacations[datum.city] = plot(parseFloat(datum.latitude), parseFloat(datum.longitude), 1));
}
return _results;
});
// HARD CODED EXAMPLES
// vacations.Nellysford = plot(37.9069562,-78.8527841,1);
// vacations.Charles_Town = plot(39.2536975,-77.9335429,1);
var current_city = null;
var city_box = null;
for (var city in vacations) {
map[state].color = Raphael.getColor();
(function (st, city) {
st[0].style.cursor = "pointer";
st[0].onmouseover = function () {
current_city && vacations[current_city].animate({fill: "#0f0", opacity: .3}, 300);
st.animate({fill: "#0f0", opacity: 1}, 300);
R.safari();
current_city = city;
};
st[0].onmouseout = function () {
st.animate({fill: "#0f0", opacity: .3}, 300);
R.safari();
};
st[0].onclick = function () {
if (t = document.getElementById(city_box)) { t.style.display = "none"; }
if (t = document.getElementById(city)) { t.style.display = "block"; }
city_box = city;
};
if (t = document.getElementById(city)) {
t.style.left = vacations[city].attr('cx') + 'px';
t.style.top = vacations[city].attr('cy') -20 + 'px';
}
})(vacations[city], city);
}; // end for
};
我遇到问题的地方是这段代码:
$.getJSON("/vacations_lat_long", function(data) {
var datum, _i, _len, _results;
_results = [];
for (_i = 0, _len = data.length; _i < _len; _i++) {
datum = data[_i];
_results.push(vacations[datum.city] = plot(parseFloat(datum.latitude), parseFloat(datum.longitude), 1));
}
return _results;
});
正如我所说,这些点被绘制了,但是当我将鼠标悬停在这些点上时我看不到不透明度的过渡,当我点击这个点时我也看不到任何东西。