Basically:
div:hover
{
body{ background-image:(bg.png); }
}
This is logical code, I know it does not work, but its the best how I can show you my problem.
Well what your trying to accomplish cannot be achieved that way using Css only, You can do it using jquery like this
$("#someDiv").hover(function(){
$("body").css("background-image", "url('image_url')")
});
In css ,You can not do this as "body" is parent element to "div" and it should come next to the element hovered to use the for format like
firstelement:hover second_element {/*styles*/}
you can use jquery to achieve it
$("div").hover(function(){
$("body").css("background", "url('url_of_image_here')")
});
or javascript
elem = document.getElementById("ID");
elem.addEventListener("mouseout", function(){
document.getElementsByTagName("body")[0].style.backgroundImage="url()";
});
Related
I'd like to check if an image width has more than 400px I'd like this image to get full div width. if image is less than 400px just print it in its normal size.
any ideas how to do this?
<div id="volta">
<img src="/img/volta.jpg">
</div>
#volta{
width:500px;
}
As far as I know, this does not exist in CSS. What you should do instead is use classes.
Define some CSS class that applies the styles you want:
.long_width {
background: blue;
}
Then you would use Javascript to check the width of the image. You don't need jQuery to do this you can do it in vanilla Javascript (unless you already have jQuery imported and need it for other things). Maybe something like this:
let elm = document.querySelector('[src="/img/volta.jpg]"');
let width = window.getComputedStyle(elm).getPropertyValue('width');
And then you would use Javascript to add and remove styles accordingly:
if (width > 400) {
elm.classList.add("long_width");
}
else {
elm.classList.remove("long_width");
}
The specific answer to your question depends on what your intentions are. But to keep your code simple, you should use Javascript to handle the logic and not depend on CSS selectors for things this complicated. Instead, create a CSS class that contains the styles you need, and then use Javascript to apply it based on the size of the user uploaded image.
Additionally, if the user uploads the image, you should load it into memory and check its attributes in memory rather than by depending on a DOM element. Something like:
let img = new Image();
img.src = "{data URL of img}"
You will need javascript / jQuery to work. Something like this:
$('img').each(function(){
if($(this).width() > 400){
$(this).css('width', '100%');
}
});
Here is also working jquery example.
Apply an id to the image, and with jquery check its width
If it is greather than 400px modify his width or add a class that does the same.
Example
$(document).ready(function(){
if($("#image").width() > 400){
$("#image").css("width", "100%");
}
else{
$("#image").css("width", "10px");
}
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id = "image" src = "https://pm1.narvii.com/6919/98f453834b5d87a6c92118da9c24fe98e1784f6ar1-637-358v2_hq.jpg"/>
You can do it like FlokiTheFisherman (with %), or you can use "wv" instead of "%".
I recommend using vw.
img[width='400'] {
width: 100%;
}
Is there a good way to add and remove elements without reflowing the page and causing all the elements to jitter about?
The angular directives ng-show and ng-hide don't preserve layout.
and bootstrap classes don't either
<div class="show">...</div>
<div class="hidden">...</div>
Is there a good way to add and remove elements without reflowing the page and causing all the elements to jitter about?
ng-hide and ng-show uses display:none
You need to add new property in CSS for visibility : hidden
.element-hidden{
visibility: hidden;
}
And then provide the condition to ng directive - ng-class
e.g.
ng-class="{element-hidden : hideBox == true}"
where hideBox == true is the condition you want to check..
You're looking for the CSS visibility attribute which makes an item invisible, but still allows the element to take up space on the DOM. There's no built-in Angular directive which will do this so you'll need to roll your own.
myApp.directive("visiblityOn", function(){
return{
restrict: "A",
link: function(scope, element){
scope.$watch('visibilityFlag', function(){
element[0].style.visibility = scope.visibilityFlag ? "visible" : "hidden";
});
}
}
});
and a corresponding controller that will work with your directive:
myApp.controller("myController", function($scope){
$scope.visibilityFlag = true;
$scope.changeVisibility = function(){
$scope.visibilityFlag = !$scope.visibilityFlag;
};
});
Example
#RahulPatil's answer is correct but somewhat inelegant. I would suggest to keep using ng-show/ng-hide because it's easier and more readable (i.e. keeps using the same pattern), and add an override in CSS for you particular items:
.keepInFlow.ng-hide {
dislpay: block!important;
visibility: hidden;
}
<div class="keepInFlow" ng-show="show">..</div>
Angular's documentation also mentions overriding ng-hide
In my page,I use tooltip which class name is .tooltipcell to the grid cell,and also use tooltip which class name is .tooltipbtn to the button.Now I want to change the background color of the tooltip in grid,but I do not want to affect the background color of the button tooltip.How to do that?I use to codes below,it affects the two tooltip.
method1:both effect
.k-widget.k-tooltip{
background-color:red; //set the desired color
}
method2:both effect
div .k-widget.k-tooltip{
background-color:red; //set the desired color
}
JS
show: function (e) {
e.sender.popup.element.addClass('red-tooltip');
},
and CSS
.red-tooltip {
background-color: #f00 !important;
}
You can do this:
.tooltipcell{background-color:green;}
.tooltipbtn{background-color:green;}
Just incase your div .k-widget.k-tooltip might overwrite the style you may have to target it deeper like this:
div .k-widget.tooltipcell{background-color:green;}
div .k-widget.tooltipbtn{background-color:green;}
The is an amendment to MarioD Answer.
I didn't test it but given that it works, a better practice would be to concatenate these classes. It saves size in the css and improves loading time. Do this:
div .k-widget.tooltipcell, div .k-widget.tooltipbtn {
background-color:green;
}
I had the same problem where I was using kendo tooltip. I wanted to change the CSS of the tooltips only in one place leaving the rest of the tooltips intact.
Using css the normal way to do this would be to use target .widget and .k-tooltip CSS classes.
Although this would change all the tooltips within a page.
So, since I wanted to change only one tooltip (same problem as this post) I had to do a JS approach.
So, I had to use the show function of kendo's tooltip.
Example:
$('.target')..kendoTooltip({
position: 'bottom',
showAfter: 1000,
content: 'test',
function(e) {
e.sender.popup.element.addClass('customClass');
}
}).data('kendoTooltip');
I will try to post here a jsfiddle in few moments.
André
I was wondering how I could set up css pseudo classes, specifically hover so when I hover over an element, like a div with an id, the properties of a different div with an id get changed?
so normally it would be this:
#3dstack:hover {
listed properties
}
I'm not sure what the change would be to have it hover on div with the id 3dstack and have it change another div.
I do not think that is possible unless the element you want to change the properties of is a descendent or a sibling of the hovered element, in which case you can do:
#myElement:hover #myElementDescendent {
background-color: blue;
}
/*or*/
#myElement:hover + #myElementSibling {
background-color: blue;
}
Of course you can always use jquery to do this:
$("#anelement").hover(
function() {
$("otherelement").css("background-color", "blue");
});
See the differences here
This is not possible with CSS alone. You'll have to use a JavaScript event handler. For example, with jQuery's hover:
$('#3dstack').hover(function() {
$('#otherID').toggleClass('properties');
});
DEMO
Visually you can do this using LESS, but under the hood it's actually using JavaScript.
A friend and myself are trying to workaround IE (7/8). We have built a canonical example here:
http://www.mathgladiator.com/share/ie-select-bug-hover-css-menus.htm
Using a CSS menu, we would like to have selects in them. However, in IE, the menu goes away when you interact with the select box. We believe this has to do with a bug in how selects affect events.
Is there a workaround? At least with pure CSS or DOM hacks?
I do not think there is a pure CSS way around this. This is due to a very common bug to the way IE handles events on select elements.
You can however work around it with Javascript:
<script type="text/javascript">
$(document).ready(function () {
$('.nav_element a').mouseover(function() {
$('.submenu').hide();
$(this).parent().find('.submenu').show();
});
$('.submenu').mouseover(function() {
$(this).show();
});
$('.submenu').mouseout(function (e) {
// Do not close if going over to a select element
if (e.target.tagName.toLowerCase() == 'select') return;
$(this).hide();
});
});
</script>
The code above uses jQuery.
Here is a way to improver select behavior in IE7/8, but it does not fix the issue
Change DOCTYPE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
Add script
<script>
function ddlOut(e) {
setTimeout(function() { e.className = e.className.replace(' over', ''); }, 1000)
}
</script>
Add css
#nav .over div.submenu
{
display: block;
}
#nav .nav_element{
behavior: expression(
this.onmouseover = new Function("this.className += ' over'"),
this.onmouseout = new Function("ddlOut(this)"),
this.style.behavior = null
);
}
It will work better at least but of course not perfect.
My advice is to change select control to html equivalent. I use OboutDropDown that has a nice view. There are many implementations that can suite you needs.
First you need to expand the :hover surface underneath your menu.
So in your css add width:310px;height:220px to #nav .nav_element a.
(also add a class or an id on the second div styled with top:220px)
Now you just need to simulate a mousedown triggered when you click on the select which will halt when the selection between the options is done - you can probably do the last part if you check for the onfocus state of the select which will stop the mousedown.