Is it possible to keep the top row moving like we move the first column in a table using jQuery?
The code I used to keep the first column moving during scroll is something like this.
$('#table-name').scroll(function () {
var _left = $(this).scrollLeft();
$('.firstTd').css('left', _left);
});
when I use the same technique to top property to a table row...through the CSS gets applied it is not honored by the browsers.
P.S: I used left property on td element and want to apply the same technique to a tr tag
Demo here: https://jsfiddle.net/8w4qac30/7/
EDIT
Oops, understood the question bad. I'll keep the info below, but actually my answer is this.
As trs are quite picky, the only thing I can think of is to select all the tds and move them, like you do with the first one, like this: https://jsfiddle.net/8w4qac30/9/
Old answer
left, top, right and bottom are positioning attributes, and for them to work you should set the position attribute too.
position attributes come in different flavors:
relative means to position the element relative to itself, so if you add, for example, left: 20px to a relative positioned element, it simply will shift its position 20 pixels to the left.
absolute means to position the element relative to the first parent that is also relative or absolute positioned.
fixed means to position the element relative to the browser window and will keep fixed during scrolls without additional code. I think that you should go this way.
Check this:
Check the positions here: https://www.w3schools.com/cssref/pr_class_position.asp
Related
I have a slider that contains N elements. Each element will by translated by N pixels when the user click on the next button. When the element is out of the wrapper div, it disappears because it is overflowed by another element.
My plugin does not use any margins, just the transform property.
I would like to know if there is a way to know if my element is out of the div. :visible does not work for my problem because the element is already visible but overflowed.
If I understand correctly, one way to do it would be to compare the position of this element to the size (width/height or both) of his parent.
With Jquery you could do it this way:
<script>
//This is the position of the right side of the element
//relative to his parent
var rightPos = $("#element").position().left + $("#element").width();
//And bottom side
var botPos = $("#element").position().top + $("#element").height();
if (rightPos > $("#element").parent().width()) {
//The element is outside the right limit of the the parent block
} else if (botPos > $("#element").parent.height()) {
//It's outside the bottom limit of the parent block
}
</script>
If it's not the parent you could then adapt this code to compare the position to the width of the correct div, preferably by using the jquery offset() method instead of position().
By determine parent width and get child width then use if condition
if($('span').width() > divWidth){
alert('Overflowed!');
// do something!
}
jsFiddle Demo
if you update your question with your html then I can update with your codes.
You could give the wrapper div the CSS property of overflow: hidden
This would mean that any elements inside of it are not visible when they leave the bounds of the wrapper.
Otherwise you could check whether your element is outside of the wrapper div using jQuery to compare the position to that of the parent.
There is a nice tool for testing if an element is visible on the screen.
Detect if a DOM Element is Truly Visible
It looks at an object and checks each of its parents to see if it’s still visible to the user.
Is it possible to save off all CSS that is 'currently' applied to an element, then later reapply it? I am working on a sticking table header, and when I i change position:fixed it loses all the applied styles. I currently save off the column widths and reapply to the table header with:
$('#tableHeader').css({
position:'fixed',
width:$('#tablePanel').width(),
top:$('#top').height(),
});
$('.column1Value').width(col1Width);
$('#col1').width(col1Width);
$('.column2Value').width(col2Width);
$('#col2').width(col2Width);
$('.column3Value').width(col3Width);
$('#col3').width(col3Width);
$('.column4Value').width(col4Width);
$('#col4').width(col4Width);
$('.column5Value').width(col5Width);
$('#col5').width(col5Width);
$('.column6Value').width(col6Width);
$('#col6').width(col6Width);
$('.column7Value').width(col7Width);
$('#col7').width(col7Width);
This make the columns the correct size and line up closely, but there is extra padding or margin being applied from somewhere I can't completely figure out (bootstrap probably), and this makes the headers and columns not line up. I was hoping for something like:
var savedCSS = $('#table').css(); and retrieve it like $('#table').css(savedCSS)
You could save off the individual styles that you are interested in one by one and then re-apply them later using the jQuery("selector").css("styleName") method that you alluded to, but I don't think there's an easy way to do them all at once. It's not impossible, but wouldn't be very efficient and probably wouldn't actually give you the result you want, once the element is in its new position.
After the discussion, we found that the sizing issue wasn't really due to the styles, but due to the element that the width was being calculated from.
When the element is positioned normally in the page-flow, it uses its most recent positioned parent's width and then takes off margin to find the width of the child content.
When the element is removed from the page flow, its width is then independent of the parent. So to get the two to match up, record the parent's width rather than the element itself and set the width to match the parent, instead of trying to maintain the element's width.
I have a grid of elements (3 x 3) formation which toggle visibility on hover, easy.
However my next step is to grow said elements to fill their container when hovered upon, I'm assuming I would need to get current (x,y) values and then grow this to the (x,y) values of the parent container and use css positioning, however every approach I take is hitting a brick wall. I have a fiddle here which demonstrates the layout / intended functionality - http://jsfiddle.net/u2w7J/
Any help would be gratefully appreciated!
The way your HTML is set up currently, this is kind of hard to accomplish while having it look smooth. A first try is to use the .toggleClass function and toggle "box" and "miniBox" for the hovered element. See http://jsfiddle.net/u2w7J/6/ for a demo.
Positioning is harder since the miniBoxes are not positioned absolutely. Hence, adding animation is causing weird results (see above demo).
I would suggest to have the miniBoxes positioned absolutely. When hovering, get the parents div left and top values and animate the miniBox using these values. Additionally, raise z-index during or before the animation to prevent other miniBoxes being visible.
I am adding elements like div dynamically in the page using jquery.The div CSS is position : absolute .Now my problem is when i add more than 1 div element at the same time than it all overlaps each other. Is there any way so that without changing my element's position property these are not overlaps?
Check out masonry plugin. It is dynamic layout plugin that auto arranges the div elements as the new elements are added in document it prevents the overlaps of the elements. Check out this link.
Simply specify the container div let it with id container you need to call function
$(".container").masonry();
and then when you add more div inside container you just need to call the function
var $newElems = $( newElements );
$(".container").masonry( 'appended', $newElems );
You define place of absolutely positioned objects with top, bottom, left, right css properties . So you have to alter these dynamically as well.
For example: The first element has top: 0, left:0 , the second top: 0, left: 50 and so forth...
When you add an element as positioned absolute and provide no valid top and left values the element will be positioned absolutes with both top and left as 0.
In your case all the elements you are adding should be taking position (0,0) so they are overlapping one above other.
One solution is to calculate the positions of each and layout them using adding corresponding top and left values to them along sith css({'position' : 'absolute'}) but that requires some math in most cases.
Dont worry, your browser already knows that math and you can use it in most cases, so add the divs without 'position' 'absolute'. Now browser layouts them well. After the browser has finished laying out them, take the DIVs and get their present position and use the position to layout them using absolute position.
for(var i=0; i < noOfDivs; i++){
{
$('#parentDiv').append('<div class="childDiv"/>');
}
$('.childDiv').css({
'position': 'absolute,
'top' : $(this).position().top,
'left' : $(this).position().left
});
The code is not tested, if DIVs are positioned one by one it should again cause problems, you should either iterate them from last to first or save all positions and apply them later. If jQuery is updating all positions in a single DOM access this will work fine.
Just found the link with a visible element with position:fixed behaves kinda strange:
http://www.steadyhealth.com/Do_you_need_to_use_a_back_up_method_for_the_first_week_of_every_month_while_on_birth_control__t267326.html
The element is div with id equals to centerMessages. It appears to be green, visible and ... moving. How come that a fixed element is moving as the page is scrolled? Or, in other words, which part of the spec I need to re-read/re-learn please?
The div does not move when you scroll. It contains no content, so you can't see it.
Fixed position just means that the element doesn't move relative to the scroll position of the page; it can still be given a position relative to the browser window. You can change this position using CSS and Javascript.