任何人都可以帮我弄清楚为什么这段代码在IE 8上不起作用? (适用于Chrome,Firefox,Opera)。
代码使用Raphäel.js库,代码允许用户鼠标拖动Raphäel.js元素(例如circle,rectanglar)
请看这里:
var paper = Raphael(0, 0, '100%', '100%');
var circle = paper.circle(75, 75, 50);
var rect = paper.rect(150, 150, 50, 50);
var set = paper.set();
set.push(circle, rect);
set.attr({
fill: 'red',
stroke: 0
});
var ox = 0;
var oy = 0;
var dragging = false;
set.mousedown(function(event) {
ox = event.screenX;
oy = event.screenY;
set.attr({
opacity: .5
});
dragging = true;
});
set.mousemove(function(event) {
if (dragging) {
set.translate(event.screenX - ox, event.screenY - oy);
ox = event.screenX;
oy = event.screenY;
}
});
set.mouseup(function(event) {
dragging = false;
set.attr({
opacity: 1
});
});