Styling elements dynamically in Angular can be achieved in multiple ways. Let's explore different methods to bind styles in an Angular template.
Method 1: Inline Style
The simplest way to apply styles directly in HTML is by using the style attribute.
<p style="color:red">Start editing to see some magic happen :)</p>
Method 2: Binding Style Using Angular Property Binding
You can bind a specific style property dynamically using Angular's property binding:
<p [style.color]="'yellow'">Start editing to see some magic happen :)</p>
Method 3: Using ViewChild and Renderer2
This method allows us to manipulate DOM elements dynamically using @ViewChild and Renderer2.
<p #a1>Start editing to see some magic happen :)</p>
In the Component:
@ViewChild('a1') paragraph!: ElementRef;
constructor(private render: Renderer2) {}
ngAfterViewInit() {
this.render.setStyle(this.paragraph.nativeElement, 'color', 'green');
}
Method 4: Using ngStyle Directive
Using [ngStyle] allows us to bind an object containing multiple styles dynamically.
<p [ngStyle]="onP">Start editing to see some magic happen :)</p>
In the Component:
onP = {
color: 'Blue',
};
Method 5: Using a Method to Return Style Object
You can also use a function to dynamically return styles.
<p [ngStyle]="getStyle()">Start editing to see some magic happen :)</p>
In the Component:
getStyle() {
return {
color: 'brown',
};
Method 6: Using API Data to Apply Styles Dynamically
You can apply styles dynamically using data fetched from an API or defined in an array.
<div *ngFor="let item of prndet; let i = index">
<p [ngStyle]="item.collblcmd">{{ item.colval }}</p>
</div>
Example Data:
prndet = [
{
prntid: '309',
colval: 'Start editing to see some magic happen :)',
field: 'sname',
tbname: 'vou1',
collbl: 'Name Of Party : ',
collblcmd: {
// 'font-family': 'Arial',
//'font-size': '12px',
color: 'pink',
// 'font-weight': 'normal',
// 'text-decoration': 'none',
// 'font-style': 'normal',
// transform: 'translate3d(10px,148px,0px)',
// position: 'relative',
// width: '92px',
'text-align': 'left',
'line-height': '12px',
'word-wrap': 'break-word',
},
},
// Additional objects can be added here
];
}
Conclusion
Each method has its use case:
Inline styles are quick but not dynamic.
Property binding is useful for setting individual styles dynamically.
ViewChild with Renderer2 is useful for DOM manipulations after the view initializes.
ngStyle provides a clean way to apply multiple styles dynamically.
Using a method can allow conditional styling.
Fetching styles from an API makes styles completely data-driven.
Choose the best method based on your project needs!
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