add solution #1549
add solution #1549
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Great job! 🎉 Your code meets all the task requirements and constraints effectively. You've implemented the functionality correctly, ensuring accurate calculations and formatting. Keep up the excellent work, and continue to pay attention to detail like ensuring elements exist in the HTML to avoid errors. Well done! 👏
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| function formatNumber(num) { | ||
| return num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ','); | ||
| } |
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The formatNumber function is correctly implemented to format numbers with commas as thousand separators. No changes are needed here.
| return num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ','); | ||
| } | ||
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| const populationElements = document.querySelectorAll('.population'); |
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The querySelectorAll method is used correctly to select elements with the class 'population'. Ensure that these elements exist in the HTML to avoid errors.
| const populationText = element.textContent.trim(); | ||
| const populationNumber = parseInt(populationText.replace(/,/g, ''), 10); |
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The code correctly trims whitespace and removes commas from the text content before parsing it as an integer. This ensures that the population numbers are accurately converted.
| if (!isNaN(populationNumber) && populationNumber > 0) { | ||
| totalPopulation += populationNumber; | ||
| count++; | ||
| } |
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The condition checks if the parsed population number is valid and positive, which is a good practice to avoid incorrect calculations.
| } | ||
| }); | ||
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| const averagePopulation = count > 0 ? totalPopulation / count : 0; |
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The calculation of the average population is correct, and the use of a ternary operator ensures that division by zero is avoided.
| const averageElements = document.querySelectorAll('.average-population'); | ||
| const totalElements = document.querySelectorAll('.total-population'); |
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Ensure that elements with the classes 'average-population' and 'total-population' exist in the HTML to avoid errors when updating their text content.
| const totalElements = document.querySelectorAll('.total-population'); | ||
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| averageElements.forEach((element) => { | ||
| element.textContent = formatNumber(averagePopulation.toFixed(0)); |
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The average population is formatted and rounded to the nearest whole number before being displayed, which is appropriate for this context.
| }); | ||
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| totalElements.forEach((element) => { | ||
| element.textContent = formatNumber(totalPopulation); |
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The total population is formatted with commas before being displayed, which improves readability.
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