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In NativeScript, you can add and remove CSS classes using the classList
property provided by the NativeScript framework. The approach is similar to web development with a few platform-specific considerations. Below is an example in TypeScript for a NativeScript Angular application:
// Import necessary modules from NativeScript
import { Component } from "@angular/core";
import { ElementRef } from "@angular/core";
// Decorate the component with @Component
@Component({
selector: "my-app",
template: `
<TextField #myTextField class="originalClass" hint="Enter text"></TextField>
<Button text="Change Class" (tap)="changeClass()"></Button>
`,
styleUrls: ["./app.component.css"]
})
export class AppComponent {
// Inject the ElementRef to access the native view
constructor(private el: ElementRef) {}
// Function to change the class
changeClass() {
// Get the native view
const textField = this.el.nativeElement.querySelector("#myTextField");
// Remove the original class
textField.classList.remove("originalClass");
// Add the new class
textField.classList.add("newClass");
}
}
In this example, we have a TextField
element with the initial class "originalClass," and a button that triggers the changeClass
function when tapped. Inside the function, we use classList
to remove the original class and add a new class.
Make sure to replace the class names with your own as needed. Note that the exact implementation may vary based on your NativeScript project structure and the specific version of NativeScript you are using.
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