Programmatically determine the html background color - html

Is there a way to determine the background color used in the html, from inside an angular component?
I am writing an angular component that's inside one of the many feature modules used where I need to know the background color used by the page, and I would like to determine dynamically the background color utilized. The webpage has multiple tabs, and this component can appear in any tab

try this:
getComputedStyle(document?.querySelector?.("body") as Element).backgroundColor

Related

Is there any way to access <ion-app> tag inside a page?

I am new to ionic. I am using an npm package called "ionic-multi-camera" to capture multiple pictures in a single instance.The app requires the following styling in app.scss
ion-app, ion-content, .nav-decor {
background-color: transparent !important;
}
But the problem is that this affects the background of the whole app after taking pictures.
I tried conditionally setting the background to transparent of ion-content in a page but it didn't work,i.e,it doesn't show the camera view but only the pictures it has taken.
Is there any way to access ion-app in a page so as to conditionally set background color of the whole app only when the camera is in use?

Is there a way to display an image grid with tick able Images in Nativescript Angular?

I am trying to get images into a grid on a Nativescript Angular App and then be able to tick them and move to the next page with the id's or names of those images.
i can do the image grid but i can't make them tickable. I'd be okayy with even just changing transparency on the clicked ones if possible.
Something like this
You could use RadListView with GridLayout for this purpose.
Checkmark on the Image is something you have to deal with your ng-template. Show the checkmark based on a flag in your data item, toggle that flag upon itemTap.

change background color of wp8 app layout

I'm interested to know, How can I change the background color through programming in WP8 App. When I navigate between the pages in my app, the background color that appears is visible at the moment of swiping pages which is either white or black(depends on theme)
Today I had downloaded Imagefusion app from the Store, where background color you see while navigating between pages is light beige, but not white/black. Do you know how can I change the background color of the app layout? Thank you.
I'm using c#, visual studio 2013.
you must be having Grid at top most layer say gridRoot
then, If you want to change its background color programmatically then use:
gridRoot.Background = new SolidColorBrush( Colors.YourColor);
As you haven't set background color to Grid, it shows default color i.e. your theme color.
http://social.msdn.microsoft.com/Forums/en-US/e0fddd42-ecb9-4a2b-b5e5-10f464cdf3e6/change-background-other-than-dark-or-light-in-app?forum=wpdevelop
Here is the easiest way that fits my expectations. I guess this method also works. Thank you very much for your help.

how to set style to the button from code behind through observable collection in windows phone 8

I am facing a problem, I have an observable collection which is hiding/showing the button and changing the text as well according to situation. Everything is working fine.
But now I want to change the background color and foreground color of the button from the code behind at runtime OR I want to set the Style from the code behind. Is it possible or if possible then how?
I tried to create a Style Property in my observable collection and tried to set, but it didn't work, please help me what and where I am going wrong ?
style from code behind can be set easily like this
Note: I am supposing that the style is being created in page resources.
btn.Style = (Style)this.Resources["Style Name"];

Dynamic Elements in JSP?

I am wondering how to create dynamic elements in a JSP webpage? For example, what I want to do is that I have a Selection Box, in which a user selects an image. Upon clicking a button (or possibly after selecting an item), the image will 'slide down' (like how PPT slides slide down when changing slides) and rest on the center of the screen.
Or at least another simpler case would be, when clicking a button, a text box will appear each time you click the button. So far, the only idea I have of this is by using visibility but that will limit me.
Can you help me on how to do these things or if it is possible to do these with only JSP? Additionally, is it possible for elements to 'pop up' (like in facebook photo viewer) without refreshing the page?
Thank you!
You want things to happen on the client, so you need to be focusing on the HTML, CSS and JavaScript. The fact you generate the HTML using JSP is irrelevant.
Build on things that work
Write JS logic for adding new content based on the form options
Write JS logic for manipulating the CSS to do the animation
Consider using a library such as YUI or jQuery to help with the JS, and using CSS 3 Transitions for the animation.