directive
Adds and removes CSS classes on an HTML element.
[ngClass]
Property | Description |
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@Input('class')klass: string | Write-Only |
@Input()ngClass: string | string[] | Set<string> | { [klass: string]: any; } | Write-Only |
The CSS classes are updated as follows, depending on the type of the expression evaluation:
string
- the CSS classes listed in the string (space delimited) are added,Array
- the CSS classes declared as Array elements are added,Object
- keys are CSS classes that get added when the expression given in the value evaluates to a truthy value, otherwise they are removed.<some-element [ngClass]="'first second'">...</some-element> <some-element [ngClass]="['first', 'second']">...</some-element> <some-element [ngClass]="{'first': true, 'second': true, 'third': false}">...</some-element> <some-element [ngClass]="stringExp|arrayExp|objExp">...</some-element> <some-element [ngClass]="{'class1 class2 class3' : true}">...</some-element>
ngDoCheck() |
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Licensed under the Creative Commons Attribution License 4.0.
https://v12.angular.io/api/common/NgClass