How do you apply style based on condition in Angular 2?
The following are the ways to conditionally apply styles to a DOM element in Angular 2.
- Applying styles property. Angular 2 allows us to assign the style property of HTML element.
- Use ngClass directive. Angular 2 still supports ngClass directive.
- Adding single class.
- By creating custom Directive.
How do you write ng style?
An attribute directive that updates styles for the containing HTML element. Sets one or more style properties, specified as colon-separated key-value pairs. The key is a style name, with an optional . suffix (such as ‘top….Propertieslink.
| Property | Description |
|---|---|
| @Input() ngStyle: { [klass: string]: any; } | Write-Only |
How do you apply ng-class based on condition?
To add a conditional class in Angular we can pass an object to ngClass where key is the class name and value is condition i.e., true or false as shown below. And in the above code, class name will be added only when the condition is true.
What is the difference between style and ngStyle?
ngStyle is an Angular directive that gives you the flexibility to do this, where as style is a regular HTML property to which you can only bind values one by one. That’s the difference between the two of them.
Why do we use NgClass?
The ngClass directive allows you to dynamically set CSS classes on an HTML element by databinding an expression that represents all classes to be added.
What is the difference between ngClass and Ng-style?
Solution. ng-style is used to interpolate javascript object into style attribute, not css class. And ng-class directive translates your object into class attribute.
What is the use of NG-style directive?
Definition and Usage The ng-style directive specifies the style attribute for the HTML element. The value of the ng-style attribute must be an object, or an expression returning an object. The object consists of CSS properties and values, in key value pairs.
Can we use two ngClass?
Angular’s NgClass Directive So far we’ve looked at adding just single classes, which is something the NgClass directive can also help us with as it supports multiple classes. Using multiple classes is the real reason to use the NgClass directive. You can think of NgClass as being able to specify multiple [class.
What is the difference between ngClass and Ng style?
Can we use NgStyle and NgClass together?
Combining NgStyle and NgClass Directives with our knowledge of Angular Template Syntax, we can marry conditional styling with Angular’s Property & Event Binding.
What is ngstyle in angular?
The Angular ngstyle conditionally applies a set of styles for the containing HTML element. The angular directive is classified into three groups, component, structure, and attribute directive. Both structure and attribute directives have a lot of built-in directives.
How to change the appearance of DOM elements using ngstyle?
The ngStyle directive allows us to change the appearance of DOM elements by adding or removing CSS styles on elements in the template of the component. expressions. The element should receive an object with style names as keys and expressions as values that evaluate style values.
What is the ngstyledirective?
The ngStyledirective allows you to set CSS style on an HTML element conditionally. Known Issues You should not use interpolationin the value of the styleattribute, when using the ngStyledirective on the same element. See herefor more info. Directive Info This directive executes at priority level 0. Usage as attribute:
How to use ng-style inside a div block?
Another example of ng-style, which has been used above, is to directly use ng-style inside div block to add a margin-left attribute. Again, make sure the syntax is the same as shown above, and the CSS attribute must be defined in the quote; otherwise, the compiles will not ready this property at all.