Explain the below code
export const formatAndDivideNumber = (num: number): string => {
if (!num) return '0';
if (num >= 1000000) {
const formattedNum = (num / 1000000).toFixed(1);
return `${formattedNum}M`;
} else if (num >= 1000) {
const formattedNum = (num / 1000).toFixed(1);
return `${formattedNum}K`;
} else {
return num.toString();
}
};2 Answer(s)
This TypeScript function, formatAndDivideNumber, takes a number as input and returns a formatted string. The function aims to convert large numbers into a more readable format, particularly for values in the thousands or millions.
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Initial Check: The function first checks if the input number is zero or undefined. If so, it returns '0'.
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Formatting for Millions: If the number is 1,000,000 or greater, it divides the number by 1,000,000 to convert it into millions. It then formats the result to one decimal place (using
.toFixed(1)) and appends an 'M' to indicate millions. -
Formatting for Thousands: If the number is at least 1,000 but less than 1,000,000, the function divides it by 1,000 to convert it into thousands. It then formats the result to one decimal place and appends a 'K' to indicate thousands.
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Returning Smaller Numbers: If the number is less than 1,000, it simply returns the number as a string without any modifications.
This function is useful for displaying large numbers in a concise and user-friendly way.
The formatAndDivideNumber function in TypeScript is designed to take a numeric input and return it as a formatted string, making large numbers easier to read.
Initial Condition Handling:
The function first checks if the input is either zero or undefined. In such cases, it immediately returns '0', ensuring that invalid or empty inputs are handled gracefully.
Handling Millions:
For numbers that reach or exceed one million, the function converts the value to millions by dividing it by 1,000,000. The result is then formatted to one decimal place using .toFixed(1), and the letter 'M' is appended to signify that the value represents millions.
Handling Thousands:
If the number falls within the range of 1,000 to 999,999, the function converts it to thousands by dividing it by 1,000. Similar to the handling of millions, it formats the result to one decimal place and appends a 'K' to indicate thousands.
Returning Smaller Numbers:
For numbers less than 1,000, no conversion is needed. The function simply returns the number as a string, leaving it in its original form.
Overall, this function is particularly useful for presenting large numbers in a more compact and readable format, especially in user interfaces where space is limited.