如何将一个元素的鼠标移动/广播到另一个元素（具有严格的坐标）？请注意，当触发生成的jQuery DIV B时，.mousemove()sh的缩放效果会起作用。有关更多上下文，请参阅代码段或this fiddle中的代码。
// Code by Magnify JS maintained by thdoan
// http://thdoan.github.io/magnify/
// https://github.com/thdoan
var native_width = 0;
var native_height = 0;
//Now the mousemove function
$(".magnify").mousemove(function(e) {
//When the user hovers on the image, the script will first calculate
//the native dimensions if they don't exist. Only after the native dimensions
//are available, the script will show the zoomed version.
if (!native_width && !native_height) {
//This will create a new image object with the same image as that in .small
//We cannot directly get the dimensions from .small because of the
//width specified to 200px in the html. To get the actual dimensions we have
//created this image object.
var image_object = new Image();
image_object.src = $(".small").attr("src");
//This code is wrapped in the .load function which is important.
//width and height of the object would return 0 if accessed before
//the image gets loaded.
native_width = image_object.width;
native_height = image_object.height;
} else {
//x/y coordinates of the mouse
//This is the position of .magnify with respect to the document.
var magnify_offset = $(this).offset();
//We will deduct the positions of .magnify from the mouse positions with
//respect to the document to get the mouse positions with respect to the
//container(.magnify)
var mx = e.pageX - magnify_offset.left;
var my = e.pageY - magnify_offset.top;
//Finally the code to fade out the glass if the mouse is outside the container
if (mx < $(this).width() && my < $(this).height() && mx > 0 && my > 0) {
$(".large").fadeIn(100);
} else {
$(".large").fadeOut(100);
}
if ($(".large").is(":visible")) {
//The background position of .large will be changed according to the position
//of the mouse over the .small image. So we will get the ratio of the pixel
//under the mouse pointer with respect to the image and use that to position the
//large image inside the magnifying glass
var rx = Math.round(mx / $(".small").width() * native_width - $(".large").width() / 2) * -1;
var ry = Math.round(my / $(".small").height() * native_height - $(".large").height() / 2) * -1;
var bgp = rx + "px " + ry + "px";
//Time to move the magnifying glass with the mouse
var px = mx - $(".large").width() / 2;
var py = my - $(".large").height() / 2;
//Now the glass moves with the mouse
//The logic is to deduct half of the glass's width and height from the
//mouse coordinates to place it with its center at the mouse coordinates
//If you hover on the image now, you should see the magnifying glass in action
$(".large").css({
left: px,
top: py,
backgroundPosition: bgp
});
}
}
});
//http://stackoverflow.com/a/26782439/5076162 - Arun P Johny
$(document).on('mousemove', function(e) {
var event = $.Event('myevent', {
pageX: e.pageX,
pageY: e.pageY
});
$(document).trigger(event);
});
$(document).on('myevent', function(e) {
log(e.pageX + ':' + e.pageY)
});
var log = function(message) {
var $log = $('#log');
$log.html(message)
};/*Some CSS*/
* {
margin: 0;
padding: 0;
}
.magnify {
width: 658px;
margin: 50px auto;
position: relative;
}
/*Lets create the magnifying glass*/
.large {
width: 175px;
height: 175px;
position: absolute;
border-radius: 100%;
/*Multiple box shadows to achieve the glass effect*/
box-shadow: 0 0 0 7px rgba(255, 255, 255, 0.85), 0 0 7px 7px rgba(0, 0, 0, 0.25), inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
/*Lets load up the large image first*/
background: url('https://s.rrimr.com/SPSSMR/ImageCache/ImageCache.aspx?Project=S1910683&File=B10_COLOR_IMG_FANCY.jpg') no-repeat;
/*hide the glass by default*/
display: none;
}
/*To solve overlap bug at the edges during magnification*/
.small {
display: block;
}
.throwMouse {
width: 658px;
height: 208px;
display: block;
background-color: #000;
font-family: arial;
margin: 0 auto;
padding: 0;
color: #FFF;
vertical-align: middle;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<!-- Lets make a simple image magnifier -->
<div class="throwMouse">
<h3>
DIV A:
</h3>
Throw this element's mousemove events INTO the .catchMouse element and have it behave as though the mouse were hovering over it.
</div>
<div class="magnify catchMouse">
<!-- This is the magnifying glass which will contain the original/large version -->
<div class="large"></div>
<!-- This is the small image -->
<h3>
DIV B:
</h3>
<img class="small" src="https://s.rrimr.com/SPSSMR/ImageCache/ImageCache.aspx?Project=S1910683&File=B10_COLOR_IMG_FANCY.jpg" width="658" />
</div>
<div id='log'>
</div>你可以试试这个
这个想法是当鼠标在.throwMouse div上我们在.magnify div上模拟一个mouseover事件时，所以我们需要将鼠标调整为200px以便在该div上
$('.throwMouse').on('mousemove', function(e) {
var event = $.Event('myevent', {
pageX: e.pageX,
pageY: e.pageY + 200
});
$(".magnify").trigger(event);
});
然后我们在旧事件myevent旁边的.magnify div上为创建的事件mouseover添加一个事件监听器
$(".magnify").on('mousemove myevent', function(e) { //});
您可以通过检查event.target来检查哪个div是事件的目标
if($(event.target).hasClass('throwMouse')){
//do something specific for this div
}
// Code by Magnify JS maintained by thdoan
// http://thdoan.github.io/magnify/
// https://github.com/thdoan
var native_width = 0;
var native_height = 0;
//Now the mousemove function
$(".magnify").on('mousemove myevent', function(e) {
//When the user hovers on the image, the script will first calculate
//the native dimensions if they don't exist. Only after the native dimensions
//are available, the script will show the zoomed version.
if (!native_width && !native_height) {
//This will create a new image object with the same image as that in .small
//We cannot directly get the dimensions from .small because of the
//width specified to 200px in the html. To get the actual dimensions we have
//created this image object.
var image_object = new Image();
image_object.src = $(".small").attr("src");
//This code is wrapped in the .load function which is important.
//width and height of the object would return 0 if accessed before
//the image gets loaded.
native_width = image_object.width;
native_height = image_object.height;
} else {
//x/y coordinates of the mouse
//This is the position of .magnify with respect to the document.
var magnify_offset = $(this).offset();
//We will deduct the positions of .magnify from the mouse positions with
//respect to the document to get the mouse positions with respect to the
//container(.magnify)
var mx = e.pageX - magnify_offset.left;
var my = e.pageY - magnify_offset.top;
//Finally the code to fade out the glass if the mouse is outside the container
if (mx < $(this).width() && my < $(this).height() && mx > 0 && my > 0) {
$(".large").fadeIn(100);
} else {
$(".large").fadeOut(100);
}
if ($(".large").is(":visible")) {
//The background position of .large will be changed according to the position
//of the mouse over the .small image. So we will get the ratio of the pixel
//under the mouse pointer with respect to the image and use that to position the
//large image inside the magnifying glass
var rx = Math.round(mx / $(".small").width() * native_width - $(".large").width() / 2) * -1;
var ry = Math.round(my / $(".small").height() * native_height - $(".large").height() / 2) * -1;
var bgp = rx + "px " + ry + "px";
//Time to move the magnifying glass with the mouse
var px = mx - $(".large").width() / 2;
var py = my - $(".large").height() / 2;
//Now the glass moves with the mouse
//The logic is to deduct half of the glass's width and height from the
//mouse coordinates to place it with its center at the mouse coordinates
//If the mouse is on the div A make the .large DIV up a 100px.
if($(event.target).hasClass('throwMouse')){
py -= 100;
}
//If you hover on the image now, you should see the magnifying glass in action
$(".large").css({
left: px,
top: py,
backgroundPosition: bgp
});
}
}
});
//http://stackoverflow.com/a/26782439/5076162 - Arun P Johny
$('.throwMouse').on('mousemove', function(e) {
var event = $.Event('myevent', {
pageX: e.pageX,
pageY: e.pageY + 200
});
$(".magnify").trigger(event);
});
$(document).on('myevent', function(e) {
log(e.pageX + ':' + e.pageY)
//$(".magnify").mouse
});
var log = function(message) {
var $log = $('#log');
$log.html(message)
};/*Some CSS*/
* {
margin: 0;
padding: 0;
}
.magnify {
width: 658px;
margin: 50px auto;
position: relative;
}
/*Lets create the magnifying glass*/
.large {
width: 175px;
height: 175px;
position: absolute;
border-radius: 100%;
/*Multiple box shadows to achieve the glass effect*/
box-shadow: 0 0 0 7px rgba(255, 255, 255, 0.85), 0 0 7px 7px rgba(0, 0, 0, 0.25), inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
/*Lets load up the large image first*/
background: url('https://s.rrimr.com/SPSSMR/ImageCache/ImageCache.aspx?Project=S1910683&File=B10_COLOR_IMG_FANCY.jpg') no-repeat;
/*hide the glass by default*/
display: none;
}
/*To solve overlap bug at the edges during magnification*/
.small {
display: block;
}
.throwMouse {
width: 658px;
height: 208px;
display: block;
background-color: #000;
font-family: arial;
margin: 0 auto;
padding: 0;
color: #FFF;
vertical-align: middle;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<!-- Lets make a simple image magnifier -->
<div class="throwMouse">
<h3>
DIV A:
</h3>
Throw this element's mousemove events INTO the .catchMouse element and have it behave as though the mouse were hovering over it.
</div>
<div class="magnify catchMouse">
<!-- This is the magnifying glass which will contain the original/large version -->
<div class="large"></div>
<!-- This is the small image -->
<h3>
DIV B:
</h3>
<img class="small" src="https://s.rrimr.com/SPSSMR/ImageCache/ImageCache.aspx?Project=S1910683&File=B10_COLOR_IMG_FANCY.jpg" width="658" />
</div>
<div id='log'>
</div>