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JavaScript JavaScript Array Iteration Methods Array Manipulation Transform Array Items with map()

Tim Strand
Tim Strand
22,458 Points

Why use toFixed instead of toLocaleString?

is there a good case to be made for using toFixed over toLocaleString for creating a currency string? it seems like using toLocaleString has more versatility for different denominations etc even if the logic is more burdensome initially.

const prices = [5, 4.23, 6.4, 8.09, 3.20];

// Result: [ '$5.00', '$4.23', '$6.40', '$8.09', '$3.20' ]

const displayPrices = prices.map(price => parseFloat(price).toLocaleString('en-US', {style: 'currency', currency: 'USD', currencyDisplay: 'symbol', minimumFractionDigits: 2, maximumFractionDigits: 2});

1 Answer

Steven Parker
Steven Parker
231,184 Points

If your application is intended for multiple currencies, then toLocaleString is clearly the better choice.