| 海外TECH |
DEV Community |
Equality of values in JavaScript |
https://dev.to/jmalvarez/equality-of-values-in-javascript-hgd
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Equality of values in JavaScriptI m currently doing the JustJavascript course which I highly recommend and I ve learned how equality of values works in JavaScript There are kinds of equality in JavaScript Same value equality Object is a b Strict equality a b triple equals Loose equality a b double equals Same value equalityObject is a b tells us if a and b are the same value Object is trueObject is undefined undefined trueObject is null null trueObject is true true trueObject is trueObject is trueObject is Hello Hello trueObject is falseObject is false Strict equalityStrict equality works like Object is but there are two exceptions NaN NaN is false although they are the same value in JavaScript There are some ways to safely check if two values are NaN Number isNaN variable Object is variable NaN variable variableNaN NaN falseObject is NaN NaN trueNumber isNaN NaN trueNaN NaN true and are true although they are different values in JavaScript In the common math that we all learn at school negative zero does not exist but it exists in floating point math for practical reasons trueObject is false Loose equalityLoose equality is very confusing and that s why it s recommended not to use it As an example see these cases truetrue truefalse trueIf you still want to learn how it works you can read more about it here ResourcesJustJavascriptFloating point math Loose equality |
2022-12-11 18:54:41 |
| 海外科学 |
NYT > Science |
Live Updates: NASA’s Artemis I Moon Mission Returns to Earth |
https://www.nytimes.com/live/2022/12/11/science/nasa-artemis-orion-splashdown
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Live Updates NASA s Artemis I Moon Mission Returns to EarthThe Orion spacecraft which is to carry astronauts to and from the moon in coming years splashed down in the Pacific Ocean Sunday after a successful test flight with no crew aboard |
2022-12-11 18:49:51 |
| 海外科学 |
NYT > Science |
Now That NASA’s Artemis I Moon Mission Has Landed, Here’s What’s Next |
https://www.nytimes.com/2022/12/11/science/artemis-ii-astronauts-moon.html
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Now That NASA s Artemis I Moon Mission Has Landed Here s What s NextWith the uncrewed Artemis I test mission back on Earth NASA is pursuing plans to return astronauts first to the moon s orbit and then lunar surface |
2022-12-11 18:19:01 |
| ニュース |
BBC News - Home |
Solihull: Search continues after people pulled from icy lake |
https://www.bbc.co.uk/news/uk-england-63937739?at_medium=RSS&at_campaign=KARANGA
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service |
2022-12-11 18:53:24 |
| ニュース |
BBC News - Home |
Five confirmed dead in Jersey explosion |
https://www.bbc.co.uk/news/world-europe-jersey-63938234?at_medium=RSS&at_campaign=KARANGA
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jersey |
2022-12-11 18:42:10 |
| ニュース |
BBC News - Home |
Four suspects charged in probe into European Parliament bribery by Gulf state |
https://www.bbc.co.uk/news/world-europe-63936360?at_medium=RSS&at_campaign=KARANGA
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bribe |
2022-12-11 18:50:42 |
| ニュース |
BBC News - Home |
Owen Farrell says Eddie Jones sacking as England boss is 'unbelievably disappointing' |
https://www.bbc.co.uk/sport/rugby-union/63938344?at_medium=RSS&at_campaign=KARANGA
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Owen Farrell says Eddie Jones sacking as England boss is x unbelievably disappointing x England captain Owen Farrell says the Rugby Football Union s decision to sack Eddie Jones as head coach was unbelievably disappointing |
2022-12-11 18:36:46 |
| ニュース |
BBC News - Home |
World Cup 2022: England players arrive home after France quarter-final defeat |
https://www.bbc.co.uk/sport/football/63934519?at_medium=RSS&at_campaign=KARANGA
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World Cup England players arrive home after France quarter final defeatHarry Kane says England will use their World Cup defeat by France to be mentally and physically stronger for the next challenge as they arrived home |
2022-12-11 18:51:18 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
米国民の預金、大手銀から移動しない理由 - WSJ PickUp |
https://diamond.jp/articles/-/314261
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wsjpickup |
2022-12-12 03:55:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
【シン富裕層のお金の増やし方】 日本という国の地盤沈下が止まらない…日本円資産以外の国際分散投資が必須のワケ - 個人投資家もマネできる 世界の富裕層がお金を増やしている方法 |
https://diamond.jp/articles/-/313359
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米国の富裕層の間では、米国以外の海外資産を組み入れるグローバル投資の動きが、以前にも増して加速しているという。 |
2022-12-12 03:50:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
ぶっちゃけ校長先生の年収は？退職金は？どうすればなれる？ - 「いい会社」はどこにある？ |
https://diamond.jp/articles/-/313590
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ぶっちゃけ校長先生の年収は退職金はどうすればなれる「いい会社」はどこにある「いい会社」はどこにあるのかーもちろん「万人にとっていい会社」など存在しない。 |
2022-12-12 03:45:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
働き方の変化で日本の労働時間は減少、供給制約が回復の足かせに - 数字は語る |
https://diamond.jp/articles/-/314264
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人当たり |
2022-12-12 03:40:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
損保代理店の窮状が噴出！「院内集会」で国会議員も問題視 - ダイヤモンド保険ラボ |
https://diamond.jp/articles/-/314263
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国会議員 |
2022-12-12 03:35:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
味の素、半導体銘柄として際立つ「うま味」 - WSJ PickUp |
https://diamond.jp/articles/-/314260
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wsjpickup |
2022-12-12 03:30:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
半導体とEV 西側は相互譲歩せよ 対中国のため - WSJ PickUp |
https://diamond.jp/articles/-/314259
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wsjpickup |
2022-12-12 03:25:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
家族計画プログラムの「まだら模様」が世界の経済発展を左右している - 米国防総省・人口統計コンサルタントの人類超長期予測 |
https://diamond.jp/articles/-/314229
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人口統計 |
2022-12-12 03:20:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
【売れる人は知っている】苦手なタイプのお客様がご来店。そんな時、どうする？ - 接客のきほん |
https://diamond.jp/articles/-/313705
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購入 |
2022-12-12 03:15:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
「頭がいい人」と普通によくいる人の明白な差【書籍オンライン編集部セレクション】 - 上流思考 |
https://diamond.jp/articles/-/313784
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話題作 |
2022-12-12 03:10:00 |
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