Angular Property Binding Challenge: Dynamic Title
Angular's property binding allows you to dynamically update the properties of HTML elements based on your component's data. This challenge focuses on implementing property binding to dynamically set the title attribute of an <h1> element based on a user-provided input. This is a fundamental concept in Angular and crucial for creating interactive and data-driven user interfaces.
Problem Description
You are tasked with creating an Angular component that displays an <h1> element. The title attribute of this <h1> element should be dynamically updated based on a string entered by the user in an <input> field. The component should have a property called dynamicTitle which holds the value to be bound to the title attribute. When the user types into the input field, the dynamicTitle property should be updated, and the <h1> element's title attribute should reflect this change in real-time.
Key Requirements:
- Create an Angular component.
- Include an
<input>field for user input. - Include an
<h1>element. - Implement property binding to connect the
dynamicTitleproperty to thetitleattribute of the<h1>element. - Update the
dynamicTitleproperty whenever the input field's value changes.
Expected Behavior:
- The component should initially render with an
<h1>element. Thetitleattribute of the<h1>should be an empty string or a default value. - As the user types into the input field, the value of the input field should be reflected in the
dynamicTitleproperty. - The
titleattribute of the<h1>element should update dynamically to match the current value of thedynamicTitleproperty.
Edge Cases to Consider:
- Empty Input: Handle the case where the input field is empty. The
<h1>'stitleshould be an empty string or a suitable default. - Long Input: The input field should handle reasonably long strings without errors.
Examples
Example 1:
Input: User types "Hello Angular!" into the input field.
Output: <h1 title="Hello Angular!">Hello Angular!</h1>
Explanation: The dynamicTitle property is updated to "Hello Angular!", and the title attribute of the h1 element is bound to this value.
Example 2:
Input: User clears the input field (empty string).
Output: <h1 title="">Hello Angular!</h1> (or similar, depending on initial h1 content)
Explanation: The dynamicTitle property is updated to an empty string, and the title attribute of the h1 element is bound to this empty string.
Example 3:
Input: User types a very long string (e.g., 200 characters) into the input field.
Output: <h1 title="[The very long string]">Hello Angular!</h1>
Explanation: The title attribute of the h1 element should correctly display the long string, without truncation or errors.
Constraints
- The solution must be written in TypeScript.
- The solution must use Angular's property binding feature.
- The solution must be a functional Angular component.
- The solution should be reasonably efficient and avoid unnecessary computations.
Notes
- Consider using
ngModelto easily bind the input field's value to thedynamicTitleproperty. - Focus on the core concept of property binding – connecting a component's data to an HTML element's attribute.
- Think about how to handle the initial state of the
dynamicTitleproperty.