dynamic text input width in Angular

Question

How can i dynamically increase the width of my textbox as typed in text increases.

Mithilesh Tata · Answer

You can achieve dynamic resizing of a textbox in Angular by utilizing Angular's two-way data binding and listening to changes in the textbox's content. Here's a basic example of how you can accomplish this: First, in your component template ( your-component.component.html ), you would have something like this: You can achieve dynamic resizing of a textbox in Angular by utilizing Angular's two-way data binding and listening to changes in the textbox's content. Here's a basic example of how you can accomplish this: First, in your component template ( your-component.component.html ), you would have something like this: In this code: [(ngModel)]="textInput" creates a two-way data binding between the textbox and a property called textInput in your component TypeScript file. (input)="adjustWidth($event)" listens to the input event on the textbox and calls the adjustWidth method in your component when the user types something. Now, in your component TypeScript file ( your-component.component.ts ), you would have: import { Component } from '@angular/core'; @Component({ selector: 'app-your-component', templateUrl: './your-component.component.html', styleUrls: ['./your-component.component.css'] }) export class YourComponent { textInput: string = ''; minWidth: number = 100; // Minimum width for the textbox constructor() { } adjustWidth(event: any) { const input = event.target; const textWidth = this.getTextWidth(input.value); input.style.width = Math.max(textWidth, this.minWidth) + 'px'; } getTextWidth(text: string): number { const canvas = document.createElement('canvas'); const context = canvas.getContext('2d'); if (!context) return this.minWidth; context.font = window.getComputedStyle(document.body).getPropertyValue('font'); return context.measureText(text).width + 5; // Adding 5 pixels for padding } } Here: adjustWidth method is called on each input event. It calculates the width of the text and sets the width of the textbox accordingly. getTextWidth method calculates the width of the given text by rendering it on an off-screen canvas and measuring its width. This is a basic implementation. You might need to adjust it based on your specific requirements, such as handling line breaks, font sizes, and other styling considerations. Additionally, you should consider debouncing the adjustWidth method if you have performance concerns.

Austin Muts · Answer

Thanks Mithilesha with your solution how can i stop text from being hidden as the textbox size increases as i want to see everything i am typing?

dynamic text input width in Angular

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