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Number Formatting:

JavaScript provides methods like toLocaleString() and Intl.NumberFormat to format numbers based on specific locales or formatting options.
Example:

let num = 1234567.89;

console.log(num.toLocaleString()); // Output: "1,234,567.89" (based on system locale)

// Using Intl.NumberFormat for custom formatting
let formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD'
});

console.log(formatter.format(num)); // Output: "$1,234,567.89"

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