{"id":25145,"date":"2025-11-25T11:59:47","date_gmt":"2025-11-25T11:59:47","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=25145"},"modified":"2025-11-25T11:59:47","modified_gmt":"2025-11-25T11:59:47","slug":"%e3%80%90javascript%e3%80%91%e5%8d%98%e4%bd%8d%e3%82%92js%e3%81%a7%e5%8f%96%e3%82%8a%e6%89%b1%e3%81%88%e3%82%8b%e3%82%88%e3%81%86%e3%81%ab%e3%81%97%e3%82%88%e3%81%86%e3%81%a8%e3%81%84%e3%81%86","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/25145\/","title":{"rendered":"\u3010JavaScript\u3011\u5358\u4f4d\u3092JS\u3067\u53d6\u308a\u6271\u3048\u308b\u3088\u3046\u306b\u3057\u3088\u3046\u3068\u3044\u3046\u63d0\u6848 #\u65e5\u672c\u8a9e\u8a33 – Qiita"},"content":{"rendered":"\n<\/p>\n
\n

\u305f\u3068\u3048\u30701t + 2kg + 3g + 4mg<\/code>\u307f\u305f\u3044\u306a\u3053\u3068\u306fJavaScript\u3067\u306f\u3067\u304d\u307e\u305b\u3093\u3002
\u5358\u4f4d\u5909\u63db\u304c\u3067\u304d\u306a\u3044\u4ee5\u524d\u306b\u3001\u5358\u4f4d\u3068\u3044\u3046\u6982\u5ff5\u304c\u3042\u308a\u307e\u305b\u3093\u3002
\u4f8b\u5916\u306f\u66a6<\/a>\u304f\u3089\u3044\u3067\u3001\u305d\u308c\u4ee5\u5916\u306e\u5024\u306b\u3064\u3044\u3066\u306f\u5024\u3057\u304b\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n

\u3068\u3044\u3046\u3053\u3068\u3067JavaScript\u3067\u5358\u4f4d\u3092\u6271\u3048\u308b\u3088\u3046\u306b\u3057\u3088\u3046\u3068\u3044\u3046proposal\u304c\u63d0\u51fa\u3055\u308c\u307e\u3057\u305f\u3002
2025\u5e7411\u6708\u73fe\u5728\u306estage\u306f1\u3067\u3001\u5b9f\u88c5\u3055\u308c\u308b\u306b\u3057\u3066\u3082\u307e\u3060\u307e\u3060\u5148\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u304c\u3001\u9762\u767d\u305d\u3046\u306a\u63d0\u6848\u3060\u3063\u305f\u306e\u3067\u7d39\u4ecb\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

\u3068\u3044\u3046\u3053\u3068\u3067\u4ee5\u4e0b\u306f\u8a72\u5f53\u306eproposal\u3001Representing Measures<\/a>\u3067\u3059\u3002
\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u540d\u306famount\u306a\u306e\u306b\u30bf\u30a4\u30c8\u30eb\u306fMeasure\u3001\u3088\u304f\u308f\u304b\u3089\u306c\u3002<\/p>\n

\n<\/a>Goals and needs<\/h2>\n

\u73fe\u5b9f\u4e16\u754c\u3067\u306f\u3001\u6570\u5024\u304c\u6570\u5024\u3060\u3051\u3067\u5b58\u5728\u3057\u3066\u3044\u308b\u72b6\u6cc1\u306f\u7a00\u3067\u3059\u3002
\u6570\u5024\u306f\u3001\u305f\u3044\u3066\u3044\u5358\u4f4d\u3068\u5171\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002
\u30dc\u30a6\u30eb\u306e\u4e2d\u306e\u30ea\u30f3\u30b4\u306e\u6570\u3001\u30b3\u30c3\u30d7\u4e00\u676f\u306e\u6c34\u306e\u91cf\u3001\u96fb\u6c17\u81ea\u52d5\u8eca\u306e\u6d88\u8cbb\u96fb\u529b\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u3082\u306e\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002
\u307e\u305f\u3001\u7269\u7406\u91cf\u306e\u6e2c\u5b9a\u306b\u306f\u7cbe\u5ea6\u3001\u3059\u306a\u308f\u3061\u6709\u52b9\u6841\u6570\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n

Intl\u30d5\u30a9\u30fc\u30de\u30c3\u30bf\u306f\u6570\u5024\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u305d\u306e\u5358\u4f4d\u306f\u6271\u308f\u306a\u3044\u305f\u3081\u3001\u5b9f\u4e16\u754c\u306b\u9069\u7528\u3059\u308b\u3068\u30d0\u30b0\u308a\u307e\u3059\u3002<\/p>\n

\u6211\u3005\u306f\u3001\u5358\u4f4d\u3092\u8868\u3059\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5c0e\u5165\u3057\u3001\u6587\u5b57\u5217\u8868\u73fe\u3092\u751f\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

\u4e00\u822c\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n

\u30fb\u8a08\u6e2c\u5024\u306e\u7cbe\u5ea6\u3092\u5236\u5fa1\u3059\u308b\u3002
\u30fb\u901a\u8ca8\u306e\u5358\u4f4d\u3092\u6271\u3046\u3002\u30e6\u30fc\u30b6\u306f\u91d1\u984d\u306e\u6570\u5024\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u305d\u306e\u901a\u8ca8\u5358\u4f4d\u3092\u4e00\u7dd2\u306b\u6271\u3044\u305f\u3044\u3067\u3057\u3087\u3046\u3002
\u30fb\u8a08\u6e2c\u5024\u3092\u6587\u5b57\u5217\u306b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u3066\u51fa\u529b\u3059\u308b\u3002<\/p>\n

\n<\/a>Description<\/h2>\n

\u6570\u5024\u3001\u7cbe\u5ea6\u3001\u5358\u4f4d\u3092\u542b\u3080\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578bAmount<\/code>\u3092\u5c0e\u5165\u3057\u307e\u3059\u3002<\/p>\n

\n<\/a>Properties<\/h3>\n

\u4ee5\u4e0b\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n

\u30fbunit\uff1astring|undefined
\u5358\u4f4d\u3002<\/p>\n

\u30fbsignificantDigits\uff1aint
\u6709\u52b9\u6841\u6570\u3002\u6b63\u306e\u6574\u6570\u3002<\/p>\n

\u30fbfractionalDigits\uff1aint
\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u6841\u6570\u3002\u975e\u8ca0\u6574\u6570\u3002<\/p>\n

\n<\/a>Constructor<\/h3>\n

\u30fbnew Amount(value[, options])<\/code>
\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u6570\u5024value\u3068\u3001\u4ee5\u4e0b\u3092\u542b\u3080\u30aa\u30d7\u30b7\u30e7\u30f3\u5f15\u6570options\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/p>\n

\u30fbunit\uff1astring|undefined
\u5358\u4f4d\u3002<\/p>\n

\u30fbsignificantDigits\uff1aint
\u6709\u52b9\u6841\u6570\u3002\u6b63\u306e\u6574\u6570\u3002<\/p>\n

\u30fbfractionalDigits\uff1aint
\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u6841\u6570\u3002\u975e\u8ca0\u6574\u6570\u3002<\/p>\n

\u30fbroundingMode
Intl\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3001\u7aef\u6570\u306e\u4e38\u3081\u30e2\u30fc\u30c9\u3002<\/p>\n

\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001\u4ee5\u4e0b\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n

\u30fbtoString([ options ])
\u6587\u5b57\u5217\u8868\u73fe\u3092\u8fd4\u3057\u307e\u3059\u3002
\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u5358\u4f4d\u3092\u89d2\u62ec\u5f27\u3067\u56f2\u3063\u305f1.23[kg]<\/code>\u306e\u3088\u3046\u306a\u5f62\u5f0f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u30fbtoLocaleString(locale[, options])
\u30ed\u30b1\u30fc\u30eb\u3092\u8003\u616e\u3057\u305f\u6587\u5b57\u5217\u8868\u73fe\u3092\u8fd4\u3057\u307e\u3059\u3002
\u305f\u3068\u3048\u3070\u5c0f\u6570\u70b9\u304c\u30ab\u30f3\u30de\u306b\u306a\u308b\u30ed\u30b1\u30fc\u30eb\u3067\u3042\u308c\u30701,23[kg]<\/code>\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u30fbwith(options)
\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u305f\u65b0\u3057\u3044\u5358\u4f4d\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n

\n<\/a>Examples<\/h2>\n

\u307e\u305a\u306f\u5358\u4f4d\u306e\u306a\u3044\u6570\u5024\u306e\u4f8b\u3067\u3059\u3002<\/p>\n

\n
\n
let<\/span> a<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>123.456<\/span>\"<\/span>);<\/span>\na<\/span>.<\/span>fractionDigits<\/span>;<\/span>              \/\/ 3<\/span>\na<\/span>.<\/span>significantDigits<\/span>;<\/span>           \/\/ 6<\/span>\na<\/span>.<\/span>with<\/span>({<\/span> fractionDigits<\/span>:<\/span> 4<\/span> }).<\/span>toString<\/span>();<\/span> \/\/ \"123.4560\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\u6709\u52b9\u6841\u6570\u3092\u5897\u3084\u3059\u3068\u3001\u672b\u5c3e\u306b0\u304c\u5897\u3048\u307e\u3059\u3002<\/p>\n
\u5358\u4f4d\u4ed8\u304d\u306e\u4f8b\u3067\u3059\u3002<\/p>\n
\n
\n
let<\/span> a<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>42.7<\/span>\"<\/span>,<\/span> {<\/span> unit<\/span>:<\/span> \"<\/span>kg<\/span>\"<\/span> });<\/span>\na<\/span>.<\/span>toString<\/span>();<\/span>                     \/\/ \"42.7[kg]\"<\/span>\na<\/span>.<\/span>toString<\/span>({<\/span> numberOnly<\/span>:<\/span> true<\/span> });<\/span> \/\/ \"42.7\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\n<\/a>Formatting with Intl<\/h3>\n
Amount\u306f\u3001\u30c7\u30fc\u30bf\u30fb\u30ed\u30b1\u30fc\u30eb\u30fb\u8868\u793a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u56fd\u969b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n
Amount\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u3001\u5f15\u6570\u306e\u76ee\u7684\u304c\u6df7\u5728\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n
\n
\n
let<\/span> numberOfKilograms<\/span> =<\/span> 42.7<\/span>;<\/span>\nlet<\/span> locale<\/span> =<\/span> \"<\/span>zh-CN<\/span>\"<\/span>;<\/span>\n\nlet<\/span> localizedString<\/span> =<\/span> new<\/span> Intl<\/span>.<\/span>NumberFormat<\/span>(<\/span>locale<\/span>,<\/span> {<\/span>\n    minimumSignificantDigits<\/span>:<\/span> 4<\/span>,<\/span>\n    style<\/span>:<\/span> \"<\/span>unit<\/span>\"<\/span>,<\/span>\n    unit<\/span>:<\/span> \"<\/span>kilogram<\/span>\"<\/span>,<\/span>\n    unitDisplay<\/span>:<\/span> \"<\/span>long<\/span>\"<\/span>,<\/span>\n})<\/span>\n.<\/span>format<\/span>(<\/span>numberOfKilograms<\/span>);<\/span>\nconsole<\/span>.<\/span>log<\/span>(<\/span>localizedString<\/span>);<\/span>  \/\/ \"42.70\u5343\u514b\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
Amount\u3092\u4f7f\u3046\u3068\u3001\u76ee\u7684\u304c\u5206\u96e2\u3055\u308c\u3001\u6b63\u3057\u304f\u64cd\u4f5c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
\n
\n
\/\/ \u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/span>\nlet<\/span> amt<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>42.7<\/span>\"<\/span>,<\/span> {<\/span> unit<\/span>:<\/span> \"<\/span>kilogram<\/span>\"<\/span>,<\/span> significantDigits<\/span>:<\/span> 4<\/span> });<\/span>\n\n\/\/ \u30ed\u30b1\u30fc\u30eb<\/span>\nlet<\/span> locale<\/span> =<\/span> \"<\/span>zh-CN<\/span>\"<\/span>;<\/span>\n\n\/\/ \u30aa\u30d7\u30b7\u30e7\u30f3<\/span>\nlet<\/span> options<\/span> =<\/span> {<\/span> unitDisplay<\/span>:<\/span> \"<\/span>long<\/span>\"<\/span> };<\/span>\n\n\/\/ \u307e\u3068\u3081\u308b<\/span>\nlet<\/span> localizedString<\/span> =<\/span> amt<\/span>.<\/span>toLocaleString<\/span>(<\/span>locale<\/span>,<\/span> options<\/span>);<\/span>\nconsole<\/span>.<\/span>log<\/span>(<\/span>localizedString<\/span>);<\/span>  \/\/ \"42.70\u5343\u514b\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
Amount\u306f\u3001Intl.MessageFormat<\/a>\u3078\u306e\u7d44\u307f\u8fbc\u307f\u3092\u3001\u5f53\u521d\u306f\u30e6\u30fc\u30b6\u30e9\u30f3\u30c9\u3067\u3001\u6700\u7d42\u7684\u306b\u6a19\u6e96\u5b9f\u88c5\u3067\u306e\u7d44\u307f\u8fbc\u307f\u3092\u898b\u636e\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
\n<\/a>Selecting Plural Forms<\/h3>\n
i18n\u306e\u3088\u304f\u3042\u308b\u554f\u984c\u3068\u3057\u3066\u3001Intl.PluralRules<\/code>\u3068Intl.NumberFormat<\/code>\u306e\u4e21\u65b9\u306b\u540c\u3058\u7cbe\u5ea6\u3092\u8a2d\u5b9a\u3092\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n
\n
\n
\/\/ \u30d0\u30b0\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u3046\u3057\u3066\u304b\u308f\u304b\u308a\u307e\u3059\u304b\uff1f<\/span>\nlet<\/span> locale<\/span> =<\/span> \"<\/span>en-US<\/span>\"<\/span>;<\/span>\nlet<\/span> numberOfStars<\/span> =<\/span> 1<\/span>;<\/span>\nlet<\/span> numberString<\/span> =<\/span> new<\/span> Intl<\/span>.<\/span>NumberFormat<\/span>(<\/span>locale<\/span>,<\/span> {<\/span> minimumFractionDigits<\/span>:<\/span> 1<\/span> }).<\/span>format<\/span>(<\/span>numberOfStars<\/span>);<\/span>\n\nswitch <\/span>(<\/span>new<\/span> Intl<\/span>.<\/span>PluralRules<\/span>(<\/span>locale<\/span>).<\/span>select<\/span>(<\/span>numberOfStars<\/span>))<\/span> {<\/span>\ncase<\/span> \"<\/span>one<\/span>\"<\/span>:<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>`The rating is <\/span>${<\/span>numberString<\/span>}<\/span> star`<\/span>);<\/span>\n    break<\/span>;<\/span>\ndefault<\/span>:<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>`The rating is <\/span>${<\/span>numberString<\/span>}<\/span> stars`<\/span>);<\/span>\n    break<\/span>;<\/span>\n}<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\u3053\u306e\u30b3\u30fc\u30c9\u306fThe rating is 1.0 star<\/code>\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002
\u30b7\u30f3\u30d7\u30eb\u306a\u30eb\u30fc\u30eb\u306e\u82f1\u8a9e\u3067\u3059\u3089\u8aa4\u308a\u3067\u3042\u308a\u3001\u8907\u96d1\u306a\u8a9e\u5f62\u5909\u5316\u3092\u6301\u3064\u8a00\u8a9e\u3067\u306f\u3001\u554f\u984c\u306f\u3055\u3089\u306b\u9855\u8457\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
Amount\u3092\u4f7f\u3046\u3068\u3001\u30b3\u30fc\u30c9\u306f\u671f\u5f85\u901a\u308a\u306b\u306a\u308a\u3001\u6d41\u308c\u3082\u8ffd\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
\n
\n
let<\/span> locale<\/span> =<\/span> \"<\/span>en-US<\/span>\"<\/span>;<\/span>\nlet<\/span> stars<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>1<\/span>,<\/span> {<\/span> fractionDigits<\/span>:<\/span> 1<\/span> });<\/span>\nlet<\/span> numberString<\/span> =<\/span> stars<\/span>.<\/span>toLocaleString<\/span>(<\/span>locale<\/span>);<\/span>\n\nswitch <\/span>(<\/span>stars<\/span>.<\/span>toLocalePlural<\/span>(<\/span>locale<\/span>))<\/span> {<\/span>\ncase<\/span> \"<\/span>one<\/span>\"<\/span>:<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>`The rating is <\/span>${<\/span>numberString<\/span>}<\/span> star`<\/span>);<\/span>\n    break<\/span>;<\/span>\ndefault<\/span>:<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>`The rating is <\/span>${<\/span>numberString<\/span>}<\/span> stars`<\/span>);<\/span>\n    break<\/span>;<\/span>\n}<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\n<\/a>Rounding<\/h3>\n
\u7cbe\u5ea6\u3092\u4e0b\u3052\u308b\u3068\u3001\u5024\u306f\u56db\u6368\u4e94\u5165\u3055\u308c\u307e\u3059\u3002<\/p>\n
\n
\n
let<\/span> a<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>123.456<\/span>\"<\/span>);<\/span>\na<\/span>.<\/span>with<\/span>({<\/span> significantDigits<\/span>:<\/span> 5<\/span> }).<\/span>toString<\/span>();<\/span> \/\/ \"123.46\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001Number\u3084Decimal\u3067\u3082\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bIEEE754\u3067\u898f\u5b9a\u3055\u308c\u305fround-ties-to-even<\/code>\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002
\u4e38\u3081\u30e2\u30fc\u30c9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\n
\n
let<\/span> b<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>123.456<\/span>\"<\/span>);<\/span>\na<\/span>.<\/span>with<\/span>({<\/span> significantDigits<\/span>:<\/span> 5<\/span>,<\/span> roundingMode<\/span>:<\/span> \"<\/span>truncate<\/span>\"<\/span> }).<\/span>toString<\/span>();<\/span> \/\/ \"123.45\"<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\n<\/a>Units (including currency)<\/h3>\n
proposal\u306e\u6838\u3068\u306a\u308b\u6a5f\u80fd\u306e\u3072\u3068\u3064\u306f\u3001\u5358\u4f4d\u3068\u901a\u8ca8\u306e\u30b5\u30dd\u30fc\u30c8\u3067\u3059\u3002
\u5358\u4f4d\u3082\u901a\u8ca8\u3082\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u5358\u4f4d\u3068\u901a\u8ca8\u306e\u3044\u305a\u308c\u304b\u7247\u65b9\u3060\u3051\u3092\u6307\u5b9a\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\n
\n
let<\/span> a<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>123.456<\/span>\"<\/span>,<\/span> {<\/span> unit<\/span>:<\/span> \"<\/span>kg<\/span>\"<\/span> });<\/span> \/\/ 123.456 kilograms<\/span>\nlet<\/span> b<\/span> =<\/span> new<\/span> Amount<\/span>(<\/span>\"<\/span>42.55<\/span>\"<\/span>,<\/span> {<\/span> unit<\/span>:<\/span> \"<\/span>EUR<\/span>\"<\/span> });<\/span>  \/\/ 42.55 Euros<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n
\u5358\u4f4d\u306e\u610f\u5473\u306f\u898f\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002
\u5358\u4f4d\u3068\u3057\u3066XYZ<\/code>\u3084keelogramz<\/code>\u306a\u3069\u3082\u4f7f\u7528\u53ef\u80fd\u3067\u3059\u3002
\u305f\u3060\u3057\u3001Intl.NumberFormat<\/code>\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5358\u4f4d\u3067toLocaleString<\/code>\u3092\u547c\u3073\u3060\u3059\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\n<\/a>Related but out-of-scope features<\/h2>\n
\u30b9\u30b3\u30fc\u30d7\u5916\u3068\u306a\u3063\u305f\u6a5f\u80fd\u3002
Amount\u306f\u3001\u5c0f\u898f\u6a21\u3067\u5bb9\u6613\u306b\u5b9f\u73fe\u3067\u304d\u308b\u6a5f\u80fd\u306e\u6838\u3068\u306a\u308b\u3053\u3068\u3092\u76ee\u6307\u3057\u3066\u3044\u307e\u3059\u3002
\u4ee5\u4e0b\u306e\u63d0\u6848\u306f\u3001\u4eca\u5f8c\u306e\u62e1\u5f35\u306b\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u73fe\u5728\u306f\u30b9\u30b3\u30fc\u30d7\u5916\u3067\u3059\u3002<\/p>\n
\n<\/a>Mathematical operations<\/h3>\n
\u7b97\u8853\u6f14\u7b97\u3078\u306e\u5bfe\u5fdc\u3002<\/p>\n
Amount\u540c\u58eb\u306e\u56db\u5247\u6f14\u7b97\u3001\u30b9\u30ab\u30e9\u30fc\u5024\u3068\u306e\u4e57\u7b97\u30fb\u9664\u7b97\u306a\u3069\u3002
g\u304b\u3089kg\u306a\u3069\u3078\u306e\u30b9\u30b1\u30fc\u30eb\u5909\u63db\u3002<\/p>\n
\n<\/a>Unit conversion<\/h3>\n
\u30de\u30a4\u30eb\u304b\u3089\u30e1\u30fc\u30c8\u30eb\u306a\u3069\u3078\u306e\u5358\u4f4d\u5909\u63db\u3002<\/p>\n
\n<\/a>Derived units<\/h3>\n
\u30e1\u30fc\u30c8\u30eb\u304b\u3089\u5e73\u65b9\u30e1\u30fc\u30c8\u30eb\u306a\u3069\u3078\u306e\u5358\u4f4d\u306e\u6d3e\u751f\u3002<\/p>\n
\n<\/a>Compound units<\/h3>\n
\u5358\u4f4d\u306e\u7d44\u307f\u5408\u308f\u305b\u3002
\u8eab\u9577\u309271inch<\/code>\u30845.92feet<\/code>\u3067\u306f\u306a\u304f5 feet 11 inches<\/code>\u3068\u8868\u3059\u3002<\/p>\n
\n<\/a>Polyfill<\/h2>\n
\u65e2\u306bPolyfill<\/a>\u304c\u5b58\u5728\u3057\u307e\u3059\u3002
\u672cproposal\u306f\u30b9\u30c6\u30fc\u30b81\u3067\u3042\u308b\u305f\u3081\u3001\u4eca\u5f8c\u4e92\u63db\u6027\u306e\u306a\u3044\u5909\u66f4\u304c\u5165\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002
\u672c\u756a\u74b0\u5883\u3067\u306e\u4f7f\u7528\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
mathjs<\/a>\u4f7f\u3046\u308f\u3002<\/p>\n
\n
mathjs<\/span><\/p>\n
\n
1<\/span>t<\/span> +<\/span> 2<\/span>kg<\/span> +<\/span> 3<\/span>g<\/span> +<\/span> 4<\/span>mg<\/span>;<\/span> \/\/ 1.002003004 t<\/span>\n<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n