Angular Template Reference Variables: Dynamic Input Binding

Angular template reference variables provide a powerful mechanism to directly access DOM elements or components within your templates. This challenge focuses on implementing a component that utilizes a template reference variable to dynamically bind a value to an input field, demonstrating a core Angular concept for manipulating the DOM and interacting with component properties. This is crucial for tasks like form validation, direct DOM manipulation, and triggering component methods based on user interaction.

Problem Description

You are tasked with creating an Angular component called DynamicInputComponent. This component should contain an input field (<input>) and a button. The input field should have a template reference variable named myInput. When the button is clicked, the value entered in the input field should be bound to a component property called inputValue. The component should display the inputValue in a paragraph below the input and button.

Key Requirements:

• Create an Angular component with a template.
• Use a template reference variable (myInput) to access the input element.
• Bind the input field's value to the inputValue property of the component.
• Implement a click handler on the button that sets the inputValue property to the current value of the input field.
• Display the inputValue in a paragraph element.

Expected Behavior:

1. The component renders with an input field, a button labeled "Update Value", and a paragraph to display the value.
2. Initially, the inputValue is an empty string, and the paragraph displays an empty string.
3. When the user types a value into the input field and clicks the "Update Value" button, the inputValue property is updated with the input field's value.
4. The paragraph below the input and button is updated to display the new inputValue.
5. If the input field is empty when the button is clicked, inputValue should be an empty string.

Edge Cases to Consider:

• What happens if the user clicks the button without entering any text in the input field?
• How does Angular handle the binding between the input field and the component property?

Examples

Example 1:

Input: User types "Hello" into the input field and clicks "Update Value".
Output: inputValue = "Hello"; Paragraph displays "Hello".
Explanation: The button click event handler sets the component's inputValue property to the value of the input field. Angular's data binding then updates the paragraph to reflect the new value.

Example 2:

Input: User types "123" into the input field and clicks "Update Value".
Output: inputValue = "123"; Paragraph displays "123".
Explanation: Similar to Example 1, the inputValue is updated and displayed.

Example 3:

Input: User clicks "Update Value" without typing anything in the input field.
Output: inputValue = ""; Paragraph displays "".
Explanation: The inputValue is updated to an empty string, and the paragraph reflects this.

Constraints

• The component must be written in TypeScript.
• The solution must use Angular's template reference variables and data binding.
• The component should be self-contained and not rely on external services or modules beyond the core Angular functionality.
• The solution should be concise and readable.

Notes

• Consider using ngModel for two-way data binding, but the core requirement is to demonstrate template reference variable usage.
• The inputValue property should be initialized to an empty string.
• Focus on the interaction between the template and the component's TypeScript code. Think about how to access the DOM element using the template reference variable and how to update the component's state.