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Angular Dynamic Table (Rows × Columns)

By FrontendAtlas Team · Updated Jan 30, 2026

Given user input for the number of rows and columns, render a table grid dynamically. Use an Angular standalone component with form bindings and *ngFor loops to generate the table structure. Concepts: components, dynamic-ui, forms. Angular focus: generate rows/cols with *ngFor and template bindings.

Use a standalone Angular component as the root component.
Provide two numeric inputs: one for the number of rows and one…

What you’ll build / What this tests

This premium angular coding focuses on Angular Dynamic Table (Rows × Columns). You’ll apply components and dynamic-ui thinking with easy level constraints. The prompt emphasizes Given user input for the number of rows and columns, render a table grid dynamically. Use….

Learning goals

Translate the prompt into a clear angular API signature and return shape.
Apply components, dynamic-ui, forms techniques to implement angular dynamic table (rows × columns).
Handle easy edge cases without sacrificing readability.
Reason about time/space complexity and trade-offs in angular.

Key decisions to discuss

Define the exact input/output contract before coding.
Prioritize predictable edge-case handling over micro-optimizations.

Evaluation rubric

Correctness: covers required behaviors and edge cases.
Clarity: readable structure and predictable control flow.
Complexity: avoids unnecessary work for large inputs.
API discipline: no mutation of inputs; returns expected shape.
Testability: solution is easy to unit test.

Constraints / Requirements

Use a standalone Angular component as the root component.
Provide two numeric inputs: one for the number of rows and one for the number of columns.
Provide a button (e.g. "Generate table" or "Update") that rebuilds the table when clicked.
Render an HTML table whose number of rows and columns matches the user-input values.
Each cell should render something simple and visible (e.g. its row/column index like R1C1).
Initially, no table or an empty grid is fine, as long as it appears correctly after the first…
Changing the row or column input and clicking the button updates the table dimensions.
If the user enters non-positive values (0 or negative), the implementation may treat them as 0 and render…
Use regular class properties (e.g. rowInput, colInput) to store the current input values.
Use additional arrays (e.g. rows: number[] and cols: number[]) for driving *ngFor loops.

Mini snippet (usage only)

// Example usage
const input = /* angular dynamic table (rows × columns) input */;
const result = solve(input);
console.log(result);

// Edge case check
const empty = input ?? null;
const fallback = solve(input);
console.log(fallback);

// Expected: describe output shape, not the implementation
// (no solution code in preview)

Common pitfalls

Mutating inputs instead of returning a new value.
Skipping edge cases like empty input, duplicates, or nulls.
Overlooking time complexity for large inputs.