Asynchronous Development Tutorials, Guides & Insights

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// Function that returns a Promise
function customPromise() {
    return new Promise((resolve, reject) => {
        // Simulate asynchronous operation with a setTimeout
        setTimeout(() => {
            // Resolve the promise with a message after 1000 milliseconds
            resolve('Promise resolved!');
        }, 1000);
    });
}

// Call the function and handle the resolved promise
customPromise().then(result => {
    console.log(result); // Output: Promise resolved!
});

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This JavaScript snippet demonstrates how to execute Python code within a browser using Skulpt, a JavaScript implementation of Python. Here's a breakdown of what the code does:

• Skulpt Configuration:
• Sk.configure sets up Skulpt with custom functions for output and file reading.
• output Function: Captures and logs output from the Python code to the browser's console.
• read Function: Simulates file reading for Skulpt. If <stdin> is requested, it returns predefined Python code. Otherwise, it throws an error indicating the file wasn't found.
• Defining Python Code:
• The pythonCode variable contains the Python code to be executed. In this example, it prints two messages: