I am attempting to implement the functionality discussed in this particular post, but within an Angular2 framework.
Essentially, I need to utilize the javascript function .setSelectionRange(start, end); on an input element after a user interacts with a trigger. However, I am unable to find a way to achieve this behavior using Typescript.
Any assistance would be greatly appreciated.
I've been searching for a solution to replicate this behavior in Typescript but haven't found one yet.
It's important to remember that TypeScript is essentially JavaScript. It seems like you may be referring to Angular2 (since the post is about Angular1).
To achieve what you're looking for, you'll need to access the DOM element (which appears to be causing some confusion). In your controller, make sure to inject ElementRef. For example:
@Inject(ElementRef) elementRef: ElementRef,Once you have the element, you can navigate through it and perform any necessary DOM manipulation or manual actions.
Documentation : https://angular.io/docs/js/latest/api/core/ElementRef-class.html
Check out this example :
import {Component, ElementRef} from 'angular2/core';
@Component({
selector:'display',
template:`
<input #myname (input) = "updateName(myname.value)"/>
<p> My name : {{myName}}</p>
`
})
class DisplayComponent implements OnInit {
constructor(public element: ElementRef) {
this.element.nativeElement // <- your direct element reference
}
ngOnInit() {
}
}
This code snippet illustrates how to select text using the .name element reference:
this.name.nativeElement.setSelectionRange(0, 999);
Below is a complete example for a "name" field:
View:
<input name="name" formControlName="name" type="text" [(ngModel)]="data.name">
Component:
export class MyComponent {
@ViewChild('name') name: ElementRef; // * For security, refer to link below
@Input() data: {name: 'Foo Baz'};
myForm: FormGroup;
constructor() {
this.myForm = new FormGroup({
name: new FormControl()
});
}
// Function to focus and select text in the input field
focusAndSelectNameFieldText(){
if (!this.name) return;
this.name.nativeElement.focus();
setTimeout(() => {
this.name.nativeElement.setSelectionRange(0, 999);
});
}
}
*Ensure safe usage of ElementRef by considering security risks:
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