I removed all circles from chart
d3.selectAll('circle').remove();
But when I hover over an invisible point, I can still see the tooltip
Disable tooltip for the all chart I can't
Who knows how to turn off an event for an invisible point?
pointer-events - did not work for me
circle.style('pointer-events', 'none')
Even if a point is invisible, it will trigger mouse events. Two solutions come to mind:
Hide the point using the CSS style display: none; This will remove the point from the DOM and therefore prevent a mouseenter/mouseover event.
Add a check to your tooltip code to check if the current element is invisible or not (if you're using d3-tip, just create a wrapper for tooltip.show() with the added conditional)
I'm using Highmaps to show a simple map and over it I have another div with a component that draws things on top of the map (this has to be done this way, I cannot draw everything inside Highmaps, unfortunely).
Now I would like to have some interation with the map, although it is below my div. I would like to know if there is a way to trigger the click, hover, etc. events on the map when I click on the div on top of it.
I have searched Highmaps docs trying to find a method a-like trigger(ev, x, y) but there seems to be none. Then I tried a pure javascript solution using MouseEvent() and dispatchEvent() on the Map DOM, but it also didn't work.
I have set up a simple fiddle with what I want to work: http://jsfiddle.net/k11yfz58/1/
If we coment the #overlay div, we get an alert when we click in a state. I want the same behavior but clicking on the overlay div, is that possible?
Thanks!
EDIT
It was suggested to use the pointer-events CSS property for this. That does not solve my problem because I also need the events to be triggered on the #overlay div.
You can add this to your css:
#overlay {
pointer-events: none;
}
From MDN:
The pointer-events CSS property specifies under what circumstances (if any) a particular graphic element can become the target of mouse events.
and the none value:
none
The element is never the target of mouse events; however, mouse events may target its descendant elements if those descendants have pointer-events set to some other value. In these circumstances, mouse events will trigger event listeners on this parent element as appropriate on their way to/from the descendant during the event capture/bubble phases.
What this means is that your overlay element is "invisible" to mouse events, and thus mouse events occur on the div below.
I'm trying to attach click events to a couple of divs. One of which has no height or width, just borders. Maybe it's just the browser, but the clicks are being triggered very unreliably. Even the css parameters .class:hover{} isn't really working.
$("body").on("click", "._tlh_dropdown, ._tlh_dropdown *", function (event) {
isn't working when the a div contained by ._tlh_dropdown is clicked. And the div ._tlh_dropdown_close_button is not removing it's parent div when clicked, nor turning a darker shade of gray when it is hovered over. What am I doing wrong here? I assume it has to do with the click event not being applied to the areas of the divs that are "just padding". Is this the case? How can I overcome this?
http://jsfiddle.net/UrNUM/7/
This is happening because the underline element that is a div element overlaps the elements in question . As you know div is a block level element.
One work around is to to set the 2 divs to inline-block
._tlh_dropdown_input_container, ._tlh_dropdown{
display: inline-block;
}
Check Fiddle for hover
If you want the div to be block level as it is then you can also play around with the z-index
._tlh_dropdown_close_button{
z-index: 1;
}
This will make sure the close div is always on top of the underlying container
UPDATE
2 events fire for every click event on the page..
So the content is not shown when u click on the image because of this condition
if ($targ.hasClass('_tlh_dropdown')
|| $targ.closest('._tlh_dropdown_content').length)
return;
This happens because the e.target when you click on the arrow image will be the arrow and not the tlh_dropdown .. So it fails on this condition and moves to the next statement where the content is removed.
Change it
if ($targ.hasClass('_tlh_dropdown')
|| $targ.closest('._tlh_dropdown').length
|| $targ.closest('._tlh_dropdown_content').length)
return;
It should work..
Check Fiddle
Also I feel the same can be accomplished with a lot less code. You can always have the HTML already built and then hide or show based on the condition.
Regarding the close button, if you hover "_tlh_dropdown_input_container" in the inspector, you can see that it overlaps the bottom part of the X button. That's why the hover/click event on the X is not caught below the middle of it.
Regarding the down arrow, just wrap it with another DIV on which you'll add the events. You can achieve minimal HTML by using a single DIV and adding the arrow to it using CSS :before or :after.
In JavaScript, is it possible to obtain a list of all elements that an element is hovering over? I'm using an element as a cursor, and I want the other elements in the page to be underlined when the cursor element is hovering over each of the other elements.
<div id="cursor">|----------|<br/>|----------|<br/>>I'm a spaceship!><br/>|----------|<br/>|----------|<br/></div>
<div id="hi">Try to select this text</div>
<p>I want to automatically highlight all elements that the cursor element hovers over.</p>
<p>Here's an element.<p>
http://jsfiddle.net/fU3Qn/
The :hover pseudo-class applies to whatever you're cursor is over. Have a quick look at this fiddle where your mouse triggers a red background for each element hovered: http://goo.gl/zurP6
Secondly, if you are using an element as your cursor, you can instruct your mouse to pass through it by using the pointer-events: none rule. Note, support outside of SVG for this property is limited.
Other than this, the only alternative way is to use something like elementFromPoint, but this will return only a single element. I'm not sure this would even work for you since you're mouse is always obstructed by an element to begin with.
Regarding the elementFromPoint route, you could temporarily hide your custom cursor to get the next element below the mouse, and then turn your custom cursor back on, as suggested in the comments below.
I have a div that has background:transparent, along with border. Underneath this div, I have more elements.
Currently, I'm able to click the underlying elements when I click outside of the overlay div. However, I'm unable to click the underlying elements when clicking directly on the overlay div.
I want to be able to click through this div so that I can click on the underlying elements.
Yes, you CAN do this.
Using pointer-events: none along with CSS conditional statements for IE11 (does not work in IE10 or below), you can get a cross browser compatible solution for this problem.
Using AlphaImageLoader, you can even put transparent .PNG/.GIFs in the overlay div and have clicks flow through to elements underneath.
CSS:
pointer-events: none;
background: url('your_transparent.png');
IE11 conditional:
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='your_transparent.png', sizingMethod='scale');
background: none !important;
Here is a basic example page with all the code.
Yes, you CAN force overlapping layers to pass through (ignore) click events.
PLUS you CAN have specific children excluded from this behavior...
You can do this, using pointer-events
pointer-events influences the reaction to click-, tap-, scroll- und hover events.
In a layer that should ignore / pass-through mentioned events you set
pointer-events: none;
Children of that unresponsive layer that need to react mouse / tap events again need:
pointer-events: auto;
That second part is very helpful if you work with multiple overlapping div layers (probably some parents being transparent), where you need to be able to click on child elements and only that child elements.
Example usage:
.parent {
pointer-events:none;
}
.child {
pointer-events:auto;
}
<div class="parent">
I'm unresponsive
I'm clickable again, wohoo !
</div>
Allowing the user to click through a div to the underlying element depends on the browser. All modern browsers, including Firefox, Chrome, Safari, and Opera, understand pointer-events:none.
For IE, it depends on the background. If the background is transparent, clickthrough works without you needing to do anything. On the other hand, for something like background:white; opacity:0; filter:Alpha(opacity=0);, IE needs manual event forwarding.
See a JSFiddle test and CanIUse pointer events.
I'm adding this answer because I didn’t see it here in full. I was able to do this using elementFromPoint. So basically:
attach a click to the div you want to be clicked through
hide it
determine what element the pointer is on
fire the click on the element there.
var range-selector= $("")
.css("position", "absolute").addClass("range-selector")
.appendTo("")
.click(function(e) {
_range-selector.hide();
$(document.elementFromPoint(e.clientX,e.clientY)).trigger("click");
});
In my case the overlaying div is absolutely positioned—I am not sure if this makes a difference. This works on IE8/9, Safari Chrome and Firefox at least.
Hide overlaying the element
Determine cursor coordinates
Get element on those coordinates
Trigger click on element
Show overlaying element again
$('#elementontop').click(e => {
$('#elementontop').hide();
$(document.elementFromPoint(e.clientX, e.clientY)).trigger("click");
$('#elementontop').show();
});
I needed to do this and decided to take this route:
$('.overlay').click(function(e){
var left = $(window).scrollLeft();
var top = $(window).scrollTop();
//hide the overlay for now so the document can find the underlying elements
$(this).css('display','none');
//use the current scroll position to deduct from the click position
$(document.elementFromPoint(e.pageX-left, e.pageY-top)).click();
//show the overlay again
$(this).css('display','block');
});
I currently work with canvas speech balloons. But because the balloon with the pointer is wrapped in a div, some links under it aren't click able anymore. I cant use extjs in this case.
See basic example for my speech balloon tutorial requires HTML5
So I decided to collect all link coordinates from inside the balloons in an array.
var clickarray=[];
function getcoo(thatdiv){
thatdiv.find(".link").each(function(){
var offset=$(this).offset();
clickarray.unshift([(offset.left),
(offset.top),
(offset.left+$(this).width()),
(offset.top+$(this).height()),
($(this).attr('name')),
1]);
});
}
I call this function on each (new) balloon. It grabs the coordinates of the left/top and right/down corners of a link.class - additionally the name attribute for what to do if someone clicks in that coordinates and I loved to set a 1 which means that it wasn't clicked jet. And unshift this array to the clickarray. You could use push too.
To work with that array:
$("body").click(function(event){
event.preventDefault();//if it is a a-tag
var x=event.pageX;
var y=event.pageY;
var job="";
for(var i in clickarray){
if(x>=clickarray[i][0] && x<=clickarray[i][2] && y>=clickarray[i][1] && y<=clickarray[i][3] && clickarray[i][5]==1){
job=clickarray[i][4];
clickarray[i][5]=0;//set to allready clicked
break;
}
}
if(job.length>0){
// --do some thing with the job --
}
});
This function proofs the coordinates of a body click event or whether it was already clicked and returns the name attribute. I think it is not necessary to go deeper, but you see it is not that complicate.
Hope in was enlish...
Another idea to try (situationally) would be to:
Put the content you want in a div;
Put the non-clicking overlay over the entire page with a z-index higher,
make another cropped copy of the original div
overlay and abs position the copy div in the same place as the original content you want to be clickable with an even higher z-index?
Any thoughts?
I think the event.stopPropagation(); should be mentioned here as well. Add this to the Click function of your button.
Prevents the event from bubbling up the DOM tree, preventing any parent handlers from being notified of the event.
Just wrap a tag around all the HTML extract, for example
<a href="/categories/1">
<img alt="test1" class="img-responsive" src="/assets/photo.jpg" />
<div class="caption bg-orange">
<h2>
test1
</h2>
</div>
</a>
in my example my caption class has hover effects, that with pointer-events:none; you just will lose
wrapping the content will keep your hover effects and you can click in all the picture, div included, regards!
An easier way would be to inline the transparent background image using Data URIs as follows:
.click-through {
pointer-events: none;
background: url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7);
}
I think that you can consider changing your markup. If I am not wrong, you'd like to put an invisible layer above the document and your invisible markup may be preceding your document image (is this correct?).
Instead, I propose that you put the invisible right after the document image but changing the position to absolute.
Notice that you need a parent element to have position: relative and then you will be able to use this idea. Otherwise your absolute layer will be placed just in the top left corner.
An absolute position element is positioned relative to the first parent
element that has a position other than static.
If no such element is found, the containing block is html
Hope this helps. See here for more information about CSS positioning.
You can place an AP overlay like...
#overlay {
position: absolute;
top: -79px;
left: -60px;
height: 80px;
width: 380px;
z-index: 2;
background: url(fake.gif);
}
<div id="overlay"></div>
just put it over where you dont want ie cliked. Works in all.
This is not a precise answer for the question but may help in finding a workaround for it.
I had an image I was hiding on page load and displaying when waiting on an AJAX call then hiding again however...
I found the only way to display my image when loading the page then make it disappear and be able to click things where the image was located before hiding it was to put the image into a DIV, make the size of the DIV 10x10 pixels or small enough to prevent it causing an issue then hiding the containing div. This allowed the image to overflow the div while visible and when the div was hidden, only the divs area was affected by inability to click objects beneath and not the whole size of the image the DIV contained and was displaying.
I tried all the methods to hide the image including CSS display=none/block, opacity=0, hiding the image with hidden=true. All of them resulted in my image being hidden but the area where it was displayed to act like there was a cover over the stuff underneath so clicks and so on wouldn't act on the underlying objects. Once the image was inside a tiny DIV and I hid the tiny DIV, the entire area occupied by the image was clear and only the tiny area under the DIV I hid was affected but as I made it small enough (10x10 pixels), the issue was fixed (sort of).
I found this to be a dirty workaround for what should be a simple issue but I was not able to find any way to hide the object in its native format without a container. My object was in the form of etc. If anyone has a better way, please let me know.
I couldn't always use pointer-events: none in my scenario, because I wanted both the overlay and the underlying element(s) to be clickable / selectable.
The DOM structure looked like this:
<div id="outerElement">
<div id="canvas-wrapper">
<canvas id="overlay"></canvas>
</div>
<!-- Omitted: element(s) behind canvas that should still be selectable -->
</div>
(The outerElement, canvas-wrapper and canvas elements have the same size.)
To make the elements behind the canvas act normally (e.g. selectable, editable), I used the following code:
canvasWrapper.style.pointerEvents = 'none';
outerElement.addEventListener('mousedown', event => {
const clickedOnElementInCanvas = yourCheck // TODO: check if the event *would* click a canvas element.
if (!clickedOnElementInCanvas) {
// if necessary, add logic to deselect your canvas elements ...
wrapper.style.pointerEvents = 'none';
return true;
}
// Check if we emitted the event ourselves (avoid endless loop)
if (event.isTrusted) {
// Manually forward element to the canvas
const mouseEvent = new MouseEvent(event.type, event);
canvas.dispatchEvent(mouseEvent);
mouseEvent.stopPropagation();
}
return true;
});
Some canvas objects also came with input fields, so I had to allow keyboard events, too.
To do this, I had to update the pointerEvents property based on whether a canvas input field was currently focused or not:
onCanvasModified(canvas, () => {
const inputFieldInCanvasActive = // TODO: Check if an input field of the canvas is active.
wrapper.style.pointerEvents = inputFieldInCanvasActive ? 'auto' : 'none';
});
it doesn't work that way. the work around is to manually check the coordinates of the mouse click against the area occupied by each element.
area occupied by an element can found found by 1. getting the location of the element with respect to the top left of the page, and 2. the width and the height. a library like jQuery makes this pretty simple, although it can be done in plain js. adding an event handler for mousemove on the document object will provide continuous updates of the mouse position from the top and left of the page. deciding if the mouse is over any given object consists of checking if the mouse position is between the left, right, top and bottom edges of an element.
Nope, you can't click ‘through’ an element. You can get the co-ordinates of the click and try to work out what element was underneath the clicked element, but this is really tedious for browsers that don't have document.elementFromPoint. Then you still have to emulate the default action of clicking, which isn't necessarily trivial depending on what elements you have under there.
Since you've got a fully-transparent window area, you'll probably be better off implementing it as separate border elements around the outside, leaving the centre area free of obstruction so you can really just click straight through.