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javascriptで数値をカンマ区切りにする

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数値をカンマ区切りにする

もうあれこれ悩まない!数値にカンマをつけるたった一つの方法

<%= new Intl.NumberFormat('ja-JP', {maximumSignificantDigits: 3}).format(item.price) %>

オプションもたくさんありますのでcurrency対応がとても楽になりますね。
ほとんどのサイトではIntlのためにbabelを使う必要はありません。
(*対応したいブラウザが古い場合は必要になります)

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