I am trying to implement a lightbox / modal box type of popup in javascript without using jquery, scriptaculous, prototype or any library whatsoever.
I found a very good start right here on stackoverflow:
How to code a JavaScript modal popup (to replace Ajax)?
(no point repeating the code here)
I tried to make simple changes and all worked fine, i even added HTML content and it worked, but I am stuck on adding scrollbars, I did my research and found nothing since almost every answer you get on google is based on jquery (even all the other answers to the question I mentioned above include jquery!)
Any suggestions or links would be great,
thanks
I think this article named "CSS OVERLAY TECHNIQUES" will help you.
http://tympanus.net/codrops/2013/11/07/css-overlay-techniques/
It provides several methods of accomplishing the above task without jquery.
For example one of the techniques described via this link is:
TECHNIQUE #1: ABSOLUTELY POSITIONED ELEMENT
The first way that an overlay can be created is by absolutely
positioning an HTML element on the page. There would be an empty div
in the markup, and with CSS this div is positioned absolutely and
given a high z-index value to make sure it stays on top of all other
elements on the page, except the modal which is opened on top of this
overlay, which will get a even higher z-index than the overlay.
<html>
<body>
<div class="overlay"></div>
<!--...-->
<body>
<html>
Supposing we have already added an empty div to the markup and given
it a class .overlay, the CSS to position this overlay on the page is:
html, body{
min-height: 100%;
}
body{
position: relative;
}
.overlay{
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 10;
background-color: rgba(0,0,0,0.5); /*dim the background*/
}
If you want a modal dialog for real, use window.showModalDialog:
returnVal = window.showModalDialog(uri[, arguments][, options]);
where
returnVal is a variant, indicating the returnValue property as set by the window of the document specified by uri.
uri is the URI of the document to display in the dialog box.
arguments is an optional variant that contains values that should be passed to the dialog box; these are made available in the window object's window.dialogArguments property.
options an optional string that specifies window ornamentation for the dialog box.
Note that a real modal stops javascript execution (like alert, confirm and prompt do), unlike fake modal dialogs created with libraries like jQuery.
Related
I am trying to build a guide functionality for my application. As a part of this functionality, it is expected that a tooltip is shown next to the target HTML element and this target element is brought on top of modal backdrop that appears together with the tooltip.
The problem is that after significant effort I still cannot make HTML element show on top of the modal backdrop. Simple tricks like z-index: 10000 !important; position: relative do not help. Also changing parent elements' z-index by disabling it in Firefox Developer Tools (and leaving z-index: 10000 !important; position: relative for the target element that is supposed to be on top of the modal backdrop) does not help.
HTML of the application is quite complex with many elements. But I want to be able to "highlight" any given element by bringing it on top of the modal overlay knowing only its id. Is there an easy way to do that with JavaScript/React?
Hopefully there is a way to do this without modifying the DOM, which would be highly preferable.
UPD: Code demo - press hat button to show guide/tooltips
Remove the z-index from .form-wrapper and apply relative position with z-index for the targetted elements.
I did this by adding
d.classList.add("tooltip-active-element");
to App.js#77
Also added the class to the css file:
.tooltip-active-element {
position: relative;
z-index: 2;
background: red;
}
and removed the z-index value from other classes, the key one being the .form-wrapper class.
Working demo: https://codesandbox.io/s/tooltip-z-index-forked-fg9pt
I have gone at a lot of informative sites in order to find answer but no luck so far. Thus now asking here.
CSS Class
.toppy {
:-webkit-full-screen {position: relative; top: -1310;}
:-moz-full-screen {position: relative; top: -1310;}
:-ms-fullscreen {position: relative; top: -1310;}
fullscreen {position: relative; top: -1310;}
}
JS Input
window.onscroll = function() {mss()};
function mss() {
var posi = document.body.scrollTop;
document.getElementById("toppy").style.top = -posi;
}
Depending on a position on a web page, this should give the value (posi). Negatived as CSS works on that way, and trying to update CSS with style(top) value (posi). However, no updating.
JS into which CSS influences
function FullScreen() { .... code .... }
CSS affects to this. If CSS has defined without class .toppy, function FullScreen works nicely opening full screen with the CSS's pre-set values (-1310) at the position downwards from the top.
But why is CSS's style property top not being updated by JS input function and therefore changing the position of the FullScreen to open at? My goal is to obtain the full screen to be opened at its current position on page. Some browsers do this automatically, some do not. Thus needing coding.
Or does one have to define a variable in css (e.g. var(--posi)) and proceed on this way but I do not have a real clue how to do that?
Many thanks for replies!
Update:
Thanks for the points. Valid ones. However, as the problem remains, I think the issue here is how to link a css to certain js being the case paricularry with this fullscreen. If I had two identical js fullscreen (expect function name), how would I define above kind of css to one js and another css to another js? As for me, it seems that css for fullscreen is (defined as above) not accepting any id or class tags, or I do not know how to link id to js? Syntaxing? Regards!
I wonder if anyone can help me please ?
Basically I have a snippet of Javascript that I want to be able to give people. So the following is true :
I can't control wherabouts in the page they decide to put the snippet (for various reasons) - It could be in the middle, the end, wherever.
All the snippet does is put a small DIV at the top of their page. At the moment I am doing the following (this is the snippet):
<div id="mydiv" style="display:none; position: fixed; top: 0; left: 0; z-index: 999; width: 100%; height: 40px; background-color:red; text-align:center; color:white"><br>Message Inside Div</div>
<script>if (Condition) { document.getElementById("mydiv").style.display = "block"; }</script>
Now, that works a treat and when "Condition" is true, it shows the div. However, using this method it overlays the div with it fixed to the top of the page.
However, I also want to do it so that the div is inserted at the top of the page but scrolls with the page as normal and DOESN'T overlay the content at the top (IE: It pushes the content down when it appears).
Any ideas on how I would do that please, remember : I don't have any access to their page (I don't even know what else is on the page) and the snippet I give them could go anywhere on the page.
I guess you can't avoid meddling with the existing code and stylings - but in case you're worried about existing top-margins on body, just check for this value first. ie. get the body top margin value, add your elements height, reapply. Example in jquery syntax (out of simplicity, can do the same in vanilla javascript)
$('body').css('margin-top',$('body').css('margin-top') + yourdiv-height);
I'm having some trouble positioning the Google +1 button on my website. The div is as follows:
<div class="g-plusone"></div>
The CSS I'm using is pretty simple:
.g-plusone
{
position: absolute;
top:95px;
left:715px;
}
Despite what would seem straightforward, it simple does not want to move.
I know for a fact that the div in question is being accessed. What's strange is that other social sharing buttons, such as the FB like below follow the same syntax and are positioned perfectly.
.fb-like
{
position: absolute;
top:62px;
left:715px;
}
Adding !important to the values does nothing, unfortunately.
Any ideas?
When Google loads +1 button the .g-plusone class seems to disappear, so try to put this DIV inside another DIV, as illustrated below:
HTML:
<div class="google-button">
<div class="g-plusone"></div>
</div>
CSS:
.google-button
{
position: absolute;
top:95px;
left:715px;
}
After page loads, the Google div called g-plusone turns into a lot of code, but, you can manipulate this button with id generated.
In my case, for example, to align the button in the middle of the line I put:
#___plusone_0{
vertical-align: middle !important;
}
Note: The id ___plusone_0 is the id generated by the google codes. Do whatever you want with this id.
Use something like Firebug to ensure you're targeting the correct element. The +1 button is very deeply nested, so you'll most likely need to look further up the DOM tree to get to it's outermost wrapper. You will be able to set the position of that without needing to use !important or anything, so I would definitely check this first.
Sorry, I would have just added this as a comment above but I don't seem to be able :)
Got a page that displays some buttons (background images, etc) and they are all clickable. What I want this specific button to do is open the target page in another browser tab using *target="_blank"*. The way it is setup as the href in a div I cannot do this. Any ideas on a work around for this?
<div class="dashboard_navbutton" href="Home/RequestRedirect" style="background-image: url('#Url.Content("~/Content/images/Form_button.png")');">
<p>Insert witty text here</p>
</div>
Just make that div an a and add display:block; to the style.
EDIT: Ensure that your chosen DOCTYPE supports the use of p inside an a element. More generally, it should use the computed style for display rather than the tag name to determine if an element is inline or block in terms of having one in the other. I believe the HTML5 one is fine: <!DOCTYPE html>.
trap the onclick event for the div, call a javascript function, have the function openthe window.
html snippet
onclick="opennewwin()"
function opennewwin(){
var awindow = window.open(loc, "blank", "height=500px,width=500px");
}
I was trying to dynamically add divs that would also function as links.
This was my solution using CSS.
First the container needs relative positioning.
.container {position: relative;}
Next, the link needs to fill the container.
.container a {position: absolute; width: 100%; height: 100%; top: 0; left: 0;}
Like I said, I dynamically assembled the div, but the html would look something like this:
<div class='container'>[some other content]</div>
The container must be position relative, otherwise the position absolute link fills its first position relative ancestor (probably the whole viewport).
Of course, you can add styling to the div or the link. Note, I was using a position: sticky nav-bar, and I had to set it's z-index high in order to avoid collisions with the div buttons.
Pros: whatever styling and targeting you set for your links will apply. Good 'style': doesn't put a block element inside an inline (should avoid browser issues, though I haven't thoroughly tested it). Does not require any other languages or frameworks.
Cons: Not as simple as Niet's answer, but shouldn't be Doctype dependent.