How to Put Calculations in Console Writeline

Basic Console Output

The simplest way to output information is using console.log(), which prints messages to the console. This is useful for debugging and tracking variable values during development.

console.log("Message to display");

For example, to output the value of a variable:

let temperature = 25;
console.log("Current temperature:", temperature);

This will display: Current temperature: 25 in the console.

Formatted Output

You can format console output using CSS styling with the %c placeholder:

console.log("%cThis is styled text", "color: blue; font-size: 16px;");

For tabular data, use console.table() to display arrays or objects in a readable format:

let products = [
    {name: "Laptop", price: 999},
    {name: "Phone", price: 699}
];
console.table(products);

Debugging Tips

Use these console methods for different debugging scenarios:

• console.error() - For error messages
• console.warn() - For warnings
• console.info() - For informational messages
• console.debug() - For debug messages (may be hidden in some browsers)

Example of error output:

try {
    // Code that might throw an error
} catch (error) {
    console.error("An error occurred:", error.message);
}

Advanced Techniques

For complex debugging, use these advanced methods:

• console.group() and console.groupEnd() - For grouping related messages
• console.time() and console.timeEnd() - For measuring execution time
• console.assert() - For conditional logging
• console.trace() - For stack traces

Example of grouped output:

console.group("User Data");
console.log("Name: John Doe");
console.log("Age: 30");
console.groupEnd();