我尝试制作一个无限卷轴,但我的滚动装订效果并不完美......(
var dragStart = function (event) {
var downPosX = event.pageX;
var downPosY = event.pageY;
var oldposScroll = $(window).scrollTop();
document.body.focus();
var dragMove = function (event) {
var movePosX = event.pageX;
var movePosY = event.pageY;
var deltaPosX = movePosX - downPosX;
var deltaPosY = movePosY - downPosY;
var movetop = oldposScroll + (deltaPosY * -1);
console.log('[movePosY = ' +movePosY+'] [deltaPosY = ' +deltaPosY+'] [movetop = ' + movetop + '] ');
$(window).scrollTop(movetop);
downPosX = movePosX;
downPosY = movePosY;
oldposScroll = movetop;
};
var dragStop = function (event) {
$(window).unbind('mousemove', dragMove).unbind('mouseup', dragStop);
};
$(window).mousemove(dragMove).mouseup(dragStop);
event.preventDefault();
};
$(window).on("scroll", function (event) {
console.log('rendering');
});
$viewport.mousedown(dragStart);
所以我想拖放我的视口(div)以滚动文档。这是有效的,但是当我打印delta值时,我有一些疯狂的结果:
[movePosY = 552] [deltaPosY = 8] [movetop = 440]
infini...port.js (ligne 33)
[movePosY = 543] [deltaPosY = -9] [movetop = 449]
infini...port.js (ligne 33)
[movePosY = 551] [deltaPosY = 8] [movetop = 441]
infini...port.js (ligne 33)
[movePosY = 540] [deltaPosY = -11] [movetop = 452]
infini...port.js (ligne 33)
[movePosY = 550] [deltaPosY = 10] [movetop = 442]
infini...port.js (ligne 33)
[movePosY = 539] [deltaPosY = -11] [movetop = 453]
infini...port.js (ligne 33)
[movePosY = 549] [deltaPosY = 10] [movetop = 443]
正如你所看到的,我有积极和消极的价值观,而不是连续的负值。
我不明白为什么......我怀疑窗口对象太慢而无法绑定“滚动”事件而mouseMove事件已经开火......但我不知道如何解决这个错误... < / p>
(之前我的视口有一个带有scrollBar的溢出,我没有这个bug。这就是我怀疑窗口对象的原因)
答案 0 :(得分:0)
我发现了问题:) 只需使用clientX / Y(参考窗口)而不是pageX / Y(参考文档顶部/左侧)。