I just finished a website, everything was working fine (what I thought)
Until I discover a huge BUG that couldn't fix:
I have a navigation BAR (png file) and added on it buttons (simple DIVs elements), When the page is openned 1st, all is fine, but if you scroll the page a bit, the buttons aren't working as they should.
Please check this link: (scroll the page a bit down and you'll notice that button aren't interacting anymore)
http://www.genius-solutions.net/GSIS/index.html
But if you move the cursor a bit above the buttons, you'll find them:
(HTML - JavaScript)
here the CSS part:
#btn {position:absolute;left:0px;top:0px;z-index:4;}
#btn1 {position:absolute;left:80px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0.0;cursor:pointer;}
#btn2 {position:absolute;left:230px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0.0;cursor:pointer;}
#btn3 {position:absolute;left:380px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0;cursor:pointer;}
#btn4 {position:absolute;left:530px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0;cursor:pointer;}
#btn5 {position:absolute;left:680px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0;cursor:pointer;}
#btn6 {position:absolute;left:830px;top:280px;width:140px;height:35px;background:#DDE6E3;opacity:0;cursor:pointer;}
#html, body {
background:#002a4c;
overflow:scroll;
width:1024px;
height:768px;
margin: 20px auto; /* center */ padding: 20px;
}
and here the HTML part:
<body >
<div id = 'applet' home='579' services='1437' solutions='1192' partners='100' aboutus='654' contacts='216'>
<div id='applet_t'>
<div id='btn'>
<div id='btn1'></div>
<div id='btn2'></div>
<div id='btn3'></div>
<div id='btn4'></div>
<div id='btn5'></div>
<div id='btn6'></div>
</div>
</div>
<div id='inf'></div>
</div>
</body>
Your issue lies in IMO very improper use of absolute positioning of your elements. As soon as you scroll the page the location of the actual "hit" placeholder moves with the page but not your background.
Test case: try to move your page up a little bit and you will be able to "click" above the actual buttons.
Unless you have a good reason for absolutely positioned element use static == default positioning for most of your elements.
Related
There is a code like that(simplified):
<style>
.contentblock{
background-color:green;
}
.thereisaproblem{
background-image:url(image.png);
background-attachment:fixed;
}
.fix{
position:fixed; /* text is centred too if thats important*/
}
</style>
<body>
<div class="thereisaproblem" id="id1">
<div class="fix"> Fixed text </div>
</div>
<div class="contentblock">
Website content 1
</div>
<div class="thereisaproblem" id="id3">
<div class="fix"> Another fixed text </div>
</div>
<div class="contentblock">
Website content 2
</div>
</body>
I need "Fixed text" to be visible only in a div with id 1, and "Another fixed text" to be visible only in a div with id 3".
When I tried to do it simply by position:fixed; text overlapped in both divs. Using z-index can only prevent 3 from being visible in 1 and vice versa. Always one of texts can be visible in the wrong div. Is there any solution to make fixed like effect but with text visible only in one div? It would be best to use just html/css, but if jscript/jquery is needed then it's ok.
there is link to jsfiddle
Basicly, if you check the jsfiddle, I want other text to be visible in the place of the first one when you scroll down to another div. You can ignore the problem of fixed text being on top of solid blue divs.
Now I understand.
CSS SOLUTION
.thereisaproblem{
position:relative;
}
.fixed{
position:absolute; // FIXED IS RELATIVE to window
// ABSOLUTE is relative to first positioned parent
}
JAVASCRIPT SOLUTION
I'll post with jQuery but it's not necesssary, it can be done just as fine with simple good old javascript.
All the code does is if the user has scrolled 100px from the top then it hides whatever div has the class top (in your case is what you had with #1), and shows the div with class bottom. Otherwise, it does the opposite. You'd have to see what's the best distance for you to use to satisfy your purpose.
$(window).bind('scroll', function() {
if ($(window).scrollTop() > 100) {
$('.top').hide();
$('.bottom').show();
}
else {
$('.bottom').hide();
$('.top').show();
}
});
In regards to CSS:
.contentblock{
position:relative;
z-index:2;
}
.fixed{
position:fixed;
z-index:0:
}
.bottom{
display:none;
}
Notice how initially the div (third div) is in display none so that only the first div is visible.
<div class="thereisaproblem top" >
<div class="fixed">
Fixed text visible in first div
</div>
</div>
<div class="contentblock">
Website content
</div>
<div class="thereisaproblem bottom">
<div class="fixed">
Fixed text visivle in third div
</div>
</div>
<div class="contentblock">Webs content 2</div>
Without defining actual positions for your fixed text to go, it will always default to top: 0; left: 0; of the next parent to have a position: relative;. Defining position will fix your overlapping issue, however, the functionality you are asking for to have text be input in certain divs depending on ID will require javascript/jquery, or even PHP.
As far as I understand it is not possible to execute JS whilst scrolling. All working iOS parallax scroll scripts that it know of recreate the native scrolling effect in js to achieve this eg. Iscroll
How then have apple achieved it on their own website.
Look at the blurred background images as you scroll on this page.
http://www.apple.com/ios/carplay/
It is possible to create a CSS purely on iOS devices without JS. There are some great examples such as Keith Clark's you can find here
However i personally found that this did not have the desired effect on iOS devices. As i expected the page to continue to scroll after i have released my touch, but it seems this didn't happen - almost as though the page was 'sticky'. I found this was the case with a number of Pure CSS solutions i came across.
I am usually working with Bootstrap so the following example is what i use to produce the parallax effect i was after.
In your CSS add this:
#fixedbg {
background:url(../img/yourparallax-image.jpg) no-repeat center center;
background-size:cover;
height:100%;
position:fixed !important;
width:100%;
z-index:-2;
top:0;
}
.header {
display: table;
position: relative;
width: 100%;
height: 100%;
}
Then in your html add this:
<div id="fixedbg"></div>
<header id="top" class="header">
</header>
<section id="article" class="article">
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-10 col-md-12">
<p class="text">Example text content goes here</p>
</div>
</div>
</div>
</section>
The #fixedbg calls the correct image from the CSS and then the header section sets up my full page image that i want to run the parallax effect on.
I usually place the #fixedbg css insude media queries for various device screen sizes as i like to use different ones depending on the content.
Please note this is a simple parallax and to date i have not 'stacked' with multiples on the same page, but between the above code and that sampled in Keith Clark's example above, this should provide a good starting point.
I would like to scroll the page to the top of the e.g. navigation div ID when clicking either any of the links inside the navigation div ID or (if possible) when clicking anywhere into the div ID itself containing the navigation links.
I have researched this and the closest I have come to is jQuery - How to scroll an anchor to the top of the page when clicked? however for some reason it does not seem to work when I try to do this in my example. What am I doing wrong?
I am new to jQuery and medium at html and css (and used inline styling of the divs since I did not want to supply a separate css just for the example).
When I load the html and script from jQuery - How to scroll an anchor to the top of the page when clicked? in Aptana it also does not scroll. Even with a content div above the div class work so that there is space to scroll to at all.
I have included two little paragraphs inside the concerning divs to explain exactly what I mean.
Any help is very much appreciated. Thank you.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
$('#scroll_navigation ul li').click(function() {
$('html,body').animate({scrollTop: $(this).offset().top}, 800);
});
</script>
<body>
<div id="logo" style="margin: 0 auto; height: 300px; width: 60%; border: 1px solid #000">Logo</div>
<div id="scroll_navigation" style="margin: 0 auto; width: 40%; border: 4px solid #225599">
<p>Scroll navigation to top of page</p>
<p>Catch any clicks in "#scroll_navigation" to scroll the div id to the top of the page</p>
<div id="navigation">
<div class="container" style="margin: 0 auto; height: 220px; width: 60%; border: 1px solid #000">
<ul>
<p>Catch clicks on anchors to scroll the div id to the top of the page</p>
<li>Portfolio</li>
<li>Services</li>
<li>About</li>
<li>Contact</li>
</ul>
</div>
</div>
</div>
<div id="content" style="margin: 0 auto; height: 1500px; width: 60%; border: 1px solid #000">Content</div>
</body>
EDIT
Beware this when using scrollTop in Firefox.
Animate scrollTop not working in firefox
jQuery scrollTop - no support for negative values in Mozilla / Firefox
Took me a while to figure out my code was fine but scrollTop was this issue in FF. In this same example the behaviour can also be observed. When scrolling down and making the anchors fixed, FF will scroll up to random positions either 2-4px before or after the target div.
I am now using Scrolld.js to achieve pixel perfect scrolling to the desired points across major browsers. I don't understand how different browser engines can render such a common thing as scrollTop from different (either html or body) inputs as far as I understand and I am new to jQuery. Guess this is not "the fault" of jQuery but how the browser engines render scrollTop.
I dont know if you did, but you have to include jquery to use it.
Another thing would be, that your "click listener" has to be in jqueries document ready function like this:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$('#scroll_navigation ul li').on('click', function(){
$('html,body').animate({scrollTop: $(this).offset().top}, 800);
});
});
</script>
I need to dynamically create iframes and to put some buttons (in column) on right of them, with buttons positions that follow the iframes ones.
I tried all the settings of
button.style.position = " "
inserting "absolute", "relative", etc. and trying to specify the pixel positions, but it doesn't work.
However, I have noticed that opening the same page with different browsers the buttons are placed in different positions.
I need a method that allows me to place the buttons at the right of the iframe, following its position and above all that returns the same result with all most used browsers.
What technique can I use?
Whats wrong with the basic premise of
<div id="left">
<iframe src="http://www.google.com"></iframe>
</div>
<div id="right">
<button>first button</button>
<button>second button</button>
</div>
#left, #right {
float:left;
width:46%;
height:300px;
margin:2%;
}
iframe {
width:100%;
}
button {
width:100%;
clear:right;
}
working example
I'm trying to get the following effect in the jQuery Mobile framework:
|-------------------------------------------------|
|[button1] HeaderText/Image [b1] [b2] [b3] |
|-------------------------------------------------|
Where [b1], [b2] and [b3] are small image buttons in the Header.
Is this even possible currently?
just simple like this
<div class="ui-btn-right">
</div>
I have had troubles with this in the past. Trick is, force all of your links to be data-role="button" and wrap said links in a container with class="ui-btn-[left/right]" (respectively) This takes care of the traditional header button positioning and markup.
<div data-role="header">
<div class="ui-btn-left">
Button1
</div>
<h1>HeaderText/Image</h1>
<div class="ui-btn-right">
B1
B2
B3
</div>
</div>
Seems as if it is possible, check out this link:
Grouped buttons on the jQuerymobile Framework website.
This is how i did it. Some of the styling may not be necessary as the class used on the parent div should be enough.
<div data-type="horizontal" style="top:10px;position:absolute;float:right;z-index:10;display:inline;" align="right" class="ui-btn-right">
Team Call
Logout
</div>
In order to use your own image buttons on the right side you'll need to either float or position a div to the right, then add your buttons.
Then you'll need to override the jQuery mobile styles for those specific buttons to prevent them from getting the rounded, gradient button style that's automatically added by the library.
#header {
float: right;
}
#header .ui-btn-up-b,
#header .ui-btn-hover-b,
#header .ui-btn-down-b
#header .ui-btn-active {
border: 0px;
background: none;
}