Cursor AI generates code through chat

Cursor AI allows you to quickly generate code, optimize code logic, and fix errors through chat interaction, thereby greatly improving development efficiency. This guide will detail how to use Cursor AI chat capabilities to generate code and provide best practices to help you program more efficiently with AI.

How to open the Cursor AI chat interface?

You can open the Cursor AI chat interface in the following ways:

1. Shortcut key method: Press Cmd + K (Mac) or Ctrl + K (Windows/Linux)

2. Mouse click: click the " Chat " button in the upper right corner of the Cursor interface

3. Code selection: After selecting the code, right-click " Ask Cursor "

4. Global chat: Press Ctrl + Enter to ask questions for the entire code base

After opening the chat interface, you can ask the AI ​​for code generation needs just like communicating with colleagues.

How to use chat function to generate code?

✅Basic code generation: enter the requirements and get the code directly

Example 1: Generate a Python calculator

Developer : Please help me write a Python calculator, which supports addition, subtraction, multiplication and division.
Cursor AI :

 python copy edit def calculateator(a, b, operation): if operation == "add": return a + b elif operation == "subtract": return a - b elif operation == "multiply": return a * b elif operation == "divide": return a / b if b != 0 else "Error: Division by zero"
    else: return "Invalid operation"# Example call result = calculate(10, 5, "add")print(result) # Output 15

Example 2: Generate SQL Query

Developer : Please write a SQL statement for me to query users older than 25 years old in the user table.
Cursor AI :

 sql copy edit SELECT * FROM users WHERE age > 25;

If you want to optimize queries, such as improving performance or avoiding SQL injection , you can ask the AI ​​further and let it improve the code.

✅Let AI optimize existing code

You can also let AI help you optimize existing code to make it more efficient, readable, and best practice-based .

Example 3: Optimizing JavaScript Code

Developer : Can this JavaScript code be optimized?

 javascript copy editing function sumArray(arr) { let sum = 0; for (let i = 0; i < arr.length; i++) {
        sum += arr[i];
    } return sum;
}

Cursor AI : You can use reduce 方法优化代码，使其更加简洁：

 javascript copy edit const sumArray = arr => arr.reduce((sum, num) => sum + num, 0);

✅Let AI fix bugs

If you encounter a bug, you can directly ask the AI, which will analyze the code and give fix suggestions.

Example 4: Fix Python code errors

Developer : Why is this code reported an error?

 python copy edit def greet(name): print("Hello, " + name)

greet()

Cursor AI :
The code error is because greet() 需要一个参数。你可以这样修复：

 python copy edit def greet(name="Guest"): print("Hello, " + name)

greet() # output Hello, Guest

Similar to using online chat generation, we can also use the chat function to generate code. By clicking the App button in the upper right corner of the code window, you can integrate the code generated in the chat into the project.