Ways to dynamically update CSS properties (such as changing the color scheme throughout the entire application)

Question

Ways to dynamically update CSS properties (such as changing the color scheme throughout the entire application)

I have a question...

If you're interested in conditional styling, the best approach is to utilize either ng-class or ng-style.

However...

For instance, let's say I'm an admin and I would like to customize the color of my application using a custom color from a colorpicker. How can I adjust some code in the CSS?

Imagine I have this line in the style.css file:

body{
  background: #ffffff;
}

(where all tags like a, h1, etc., implement certain colors)

In the controller, I want to change this #ffffff to #000000.

What is the optimal method for adjusting this color in the CSS without having to use ng-class or ng-style on every tag within each controller?

javascript html css angularjs

Answer 1

Answer №1

One effective method is to create a file like color.css that contains all CSS rules for properties such as color, background-color, border-color, and so on, with the necessary overrides. However, AngularJS alone may not suffice for this task.

color-default.css

body {
    background: #fff;
}

color.css

body {
    background: #f00;
}

Alternative JS Approach
Assign a class to each element you wish to customize. Create classes for each property as follows:

.skin-color { color: {{color}}; }
.skin-background-color { background-color: {{color}}; }
.skin-border-color { border-color: {{color}}; }
etc..

Apply these classes within your HTML elements:

<h1 class="skin-color">My title</h1>
<p>Hello I'm online!</p>
<p class="skin-background-color">No difference!</p>
<p><a href="#">I'm link</a></p>

You can store the color variable in localStorage, for instance.
Demo: http://codepen.io/anon/pen/jPrabY

Answer 2

One effective method is to create a file like color.css that contains all CSS rules for properties such as color, background-color, border-color, and so on, with the necessary overrides. However, AngularJS alone may not suffice for this task.

color-default.css

body {
    background: #fff;
}

color.css

body {
    background: #f00;
}

Alternative JS Approach
Assign a class to each element you wish to customize. Create classes for each property as follows:

.skin-color { color: {{color}}; }
.skin-background-color { background-color: {{color}}; }
.skin-border-color { border-color: {{color}}; }
etc..

Apply these classes within your HTML elements:

<h1 class="skin-color">My title</h1>
<p>Hello I'm online!</p>
<p class="skin-background-color">No difference!</p>
<p><a href="#">I'm link</a></p>

You can store the color variable in localStorage, for instance.
Demo: http://codepen.io/anon/pen/jPrabY

Answer 3

Answer №2

If you want to dynamically add CSS rules in JavaScript, one way to do it is by writing the rule in JavaScript and then applying it to a stylesheet on the fly. Some helpful resources on how to achieve this can be found here and here.

var myColor = '#FF00FF';
var stylesheet = /* retrieve stylesheet element */;
stylesheet.insertRule('.dynamic-color { background-color:"' + myColor +'";}',0);

Alternatively, if you're working with Angular, you could create a directive that encapsulates the logic for interacting with the DOM and stylesheets.

Answer 4

If you want to dynamically add CSS rules in JavaScript, one way to do it is by writing the rule in JavaScript and then applying it to a stylesheet on the fly. Some helpful resources on how to achieve this can be found here and here.

var myColor = '#FF00FF';
var stylesheet = /* retrieve stylesheet element */;
stylesheet.insertRule('.dynamic-color { background-color:"' + myColor +'";}',0);

Alternatively, if you're working with Angular, you could create a directive that encapsulates the logic for interacting with the DOM and stylesheets.

Answer 5

Answer №3

One simple way to achieve this is by clicking on a box called myBox to change its background color.

Here's how you can do it with some code:

<div class="myBox" ng-click="changeBackgroundColor()"></div>

In your JavaScript file:

$scope.changeBackgroundColor = function(){
  angular.element('.myBox').css('background-color', '#000');
}

And in your CSS file:

.myBox{background-color: #fff;}

I hope this explanation helps!

Answer 6

One simple way to achieve this is by clicking on a box called myBox to change its background color.

Here's how you can do it with some code:

<div class="myBox" ng-click="changeBackgroundColor()"></div>

In your JavaScript file:

$scope.changeBackgroundColor = function(){
  angular.element('.myBox').css('background-color', '#000');
}

And in your CSS file:

.myBox{background-color: #fff;}

I hope this explanation helps!

Answer 7

Answer №4

Consider SASS or LESS as an alternative and use variables for color manipulation...

Answer 8

Consider SASS or LESS as an alternative and use variables for color manipulation...

Ways to dynamically update CSS properties (such as changing the color scheme throughout the entire application)

Answer №1

Answer №2

Answer №3

Answer №4

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