http://www.grycheng.com/?p=2264
提示：你可以先修改部分代码再运行。
(function($) {
$.fn.extend({
show: function(div) {
var w = this.width(),
h = this.height(),
xpos = w / 2,
ypos = h / 2,
eventType = "",
direct = "";
this.css({
"overflow": "hidden",
"position": "relative"
});
div.css({
"position": "absolute",
"top": this.width()
});
this.on("mouseenter mouseleave", function(e) {
var oe = e || event;
var x = oe.offsetX;
var y = oe.offsetY;
var angle = Math.atan((x - xpos) / (y - ypos)) * 180 / Math.PI;
if (angle > -45 && angle < 45 && y > ypos) {
direct = "down";
}
if (angle > -45 && angle < 45 && y < ypos) {
direct = "up";
}
if (((angle > -90 && angle < -45) || (angle > 45 && angle < 90)) && x > xpos) {
direct = "right";
}
if (((angle > -90 && angle < -45) || (angle > 45 && angle < 90)) && x < xpos) {
direct = "left";
}
move(e.type, direct)
});
function move(eventType, direct) {
if (eventType == "mouseenter") {
switch (direct) {
case "down":
div.css({
"left": "0px",
"top": h
}).stop(true, true).animate({
"top": "0px"
}, "fast");
break;
case "up":
div.css({
"left": "0px",
"top": -h
}).stop(true, true).animate({
"top": "0px"
}, "fast");
break;
case "right":
div.css({
"left": w,
"top": "0px"
}).stop(true, true).animate({
"left": "0px"
}, "fast");
break;
case "left":
div.css({
"left": -w,
"top": "0px"
}).stop(true, true).animate({
"left": "0px"
}, "fast");
break;
}
} else {
switch (direct) {
case "down":
div.stop(true, true).animate({
"top": h
}, "fast");
break;
case "up":
div.stop(true, true).animate({
"top": -h
}, "fast");
break;
case "right":
div.stop(true, true).animate({
"left": w
}, "fast");
break;
case "left":
div.stop(true, true).animate({
"left": -w
}, "fast");
break;
}
}
}
}
});
})(jQuery)
/*
*使用说明：
* $(".a").show($(".b"))
* a是展示层，b是遮罩层
* b在a的内部
*/
$(".outer").each(function(i){
$(this).show($(".inner").eq(i));
});
转载请注明：有爱前端 » jQuery获取鼠标移动方向特效
