putting an overlay over a div - javascript

I got a div with some text and a link tag in it, when i click on the link i would like to have an overlay over the div so the opacity is set to .3 or something and have a little form put over it. Does anyone know how to approach this in jquery?

You can use my elementOverlay plugin:
var overlay = $('#yourDiv').elementOverlay();
// some code
overlay.elementOverlay('hide');
Plugin code: https://github.com/jgauffin/griffin.jquery.tools/blob/master/Source/Plugins/jquery.griffin.elementoverlay.js

Just make a div of a fixed size, width and position (the same and place as the original) and set It's background color to slightly transparent.

Related

Popup a part of the html background on hover

I have a background image in my html page. I want it to popup when I hover over a part of it.
I did this by putting an image over the backgroung with opacity: 0 and my function did was putting opacity: 1 when hovering over the image.
But when the screen size changes, the image position changes.
I think you shouldn't be using it in background image. Can you rather use a regular img tag, and then you can define a usemap attribute to it, and map the areas using a map.
This approach is explained here: https://www.w3schools.com/tags/tag_map.asp
You can put a javascript:functionName() for href attribute of any area in a map.

Rollover Image to Text with Transparent Background

I haven't worked much with Javascript, but I have a rough idea of how to make an image rollover to another image. I'm trying to make an image that, when moused over, will become a transparent background to a block of text that will occupy the space the image occupied. I've seen lots of tutorials but nothing matching quite that.
Also: is there any way to format this text with css or otherwise? (Like adding padding, line breaks, etc.)
Any help or links to a site where I can figure it out would be greatly appreciated! Thanks!
This fiddle is a pure css implementation that changes the opacity of an image placed in front of the text on hover. To do this I used put the text and image containers both within a container div and set position: absolute so that they overlap. I then change the opacity of the image by using the :hover selector. Since the text is behind the image, it can't be selected. Let me know if this what your looking for, and specify what you would like differently if it isn't :)
If you want the text to stay after the mouseover, you could use javascript to toggle a class on the rollover and add some text. E.g., put an image as the background to a div with some class (e.g., class="solid-image"). When you want to change the element, just change the class (e.g., with myElement.className="translucent-image") and then you can either have text that was previously invisible or you can add text to the div (so long as it doesn't have children) by using the textContent or innerText element. E.g.:
text = "textContent" in document ? "textContent" : "innerText";
myDomElement[text] = "My text here";
And then add an event listener for the appropriate events.

How to respond to a click outside a certain area?

My document looks like this:
Basically the background is one full-screen, transparent div. There are couple problems...if I just create the background div and don't apply any z-index to it, it ends up being on top of everything, and I cannot click on the box. If I set the z-index of the background div to be below the box, I can't seem to click on the background. What I want to do, it to be able to click both on the box, and the background.
var x = document.getElementById("bg");
x.addEventListener("click",reset,false);
function reset() {
alert("reset was clicked");
}
CLARIFICATION: box is on the same node level as the bg. it is not inside the bg div.
Take a look at this jQuery plugin - even if it doesn't solve your particular question the code could provide insight into your dilemma.
jQuery clickoutside
You must post your code so every one can help you. My test work correctly on Firefox and Chrome. If I'm guessing right, the background in your code isn't expanded. Try to remove html, body { width:100%; height:100%; } in my example to see the problem.
On IE browser, you need to use a transparent gif image as background of the background div, otherwise the background div may be unable to receive mouse click event.

Change background colour and transparency when adding a "modal div"

I am having a page that at some point shows a hidden div and adds a form for inputing some data. You can call it a modal div perhaps.
What I want to do is to grey out everything else and only allow interaction with the mentioned div. I want the background to be grey and transparent.
What is the best strategy for this? Adding a image and stretching it in some way and making it transparent? Is it possible to make that image catch all events that ends up outside my form-div? How to do this?
Any other, better way?
I am using jquery so best way is if I can se any jquery api for this.
This is actually not that complicated. It can be done in a line or two:
/* initialize it */
$(document.body).append("<div id='shadow' style='position:fixed;left:0px;top:0px;width:100%; height:100%; background:black;'></div>").find("#shadow").hide();
/* show it */
$("#shadow").fadeTo(200,0.5);
/* hide it */
$("#shadow").fadeTo(200,0);
then just make sure to set the form to a z-index higher than the shadow.
You can do this by using a Modal jQuery Dialog. It will grey out the background and disable editing on the page except for the dialog.
Make a div overlap the whole page. That div is 50% transparent and grey. Then your modal div comes on top of that.
More info: Snippets: Howto Grey-Out The Screen

full div area onclick

This problem was not solved.. it was just evaded.. so dont use this as reference
what i have is
<div>
<img onclick='this.style.display="none";this.parentNode.getElementsByTagName("div")[0].style.display="block";this.parentNode.getElementsByTagName("div")[0].style.width=this.offsetWidth+"px";this.parentNode.getElementsByTagName("div")[0].style.height=this.height+"px";' src='http://static.***.pl/cache/***.pl/math/cafc682a15c9c6f1b7bb41eb004d6c45935cbf06434221f7201665f85242cb94.png'/>
<div onclick='this.style.display="none";this.parentNode.getElementsByTagName("img")[0].style.display="inline";' style='display:none'>
<pre style='width:100%;height:100%;'>
\lim_{t\to\infty}\int\limits_1^{t} \frac{1}{x^2}\,dx=\lim_{t\to\infty}\left(-\frac{1}{x}\right)\bigg|_1^t=\lim_{t\to\infty}\left(-\frac{1}{t}-\left(-\frac{1}{1}\right)\right)=\kappa=1880154404
</pre>
</div>
</div>
yes i know its ugly but well..
my problem is when i click the image it does what i want but if i then click the div it only works if i click on the text and i want it to work for the full div !
i dont want to use document.getElementById etc...
there will be multiple instances of this code and it will be in unknown places.
i really dont want to write up bloated code to do this (this includes jQuery,flash,.NET, Zend Engine etc etc...)
my question is simple :
why the hell does it work only if i click on text and how to fire onclick for the whole div
In your original Javascript action, you were setting the width and height of your div to zero, which means that there is no area to click on.
Here is a demo: http://jsfiddle.net/audetwebdesign/ndKqM/
which should demonstrate the fix. I added some background color and padding to show the dimensions of the various boxes.
I removed the parts of the JS that calculated width and height and that fixed the issue.
If you click on the lime green area that holds your text, the action works.
Unless there is some other reason, you don't need to adjust width or height.
It's hard to tell what behavior you really want.
You are setting the image to display:none, and then you set the style.height and style.width of the sibling div to image.height and image.width. So - those will both be zero (as display:none is set for the image).
Do yourself a favor and set background colors or borders for your divs so you can see what's going on as you code.
Use an A tag with your onclick event and a null URL href="javascript://" instead of a DIV

Categories

Resources