{"id":27979,"date":"2022-12-27T21:10:30","date_gmt":"2022-12-27T15:40:30","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-what-exactly-does-math-floor-do\/"},"modified":"2022-12-27T21:10:30","modified_gmt":"2022-12-27T15:40:30","slug":"solved-what-exactly-does-math-floor-do","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-what-exactly-does-math-floor-do\/","title":{"rendered":"[Solved] What exactly does Math.floor do?"},"content":{"rendered":"

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No, in fact this line of code outputs 0<\/code>:<\/p>\n

 Math.floor(0.9);\n<\/code><\/pre>\n
Math.floor<\/code> always rounds to the nearest whole number that is smaller than your input. You might confuse it with Math.round<\/code>, that rounds to nearest<\/em> whole number.<\/p>\n
This is why this code always outputs 1<\/code> or 0<\/code>, since input never gets to 2<\/code> or bigger:<\/p>\n
Math.floor(Math.random()*2)\n<\/code><\/pre>\n
There’s actually three different rounding functions in JavaScript: Math.floor<\/code>, its opposite Math.ceil<\/code> and the “usual” Math.round<\/code>.<\/p>\n
These work like this:<\/p>\n
Math.floor(0.1); \/\/ Outputs 0\nMath.ceil(0.1); \/\/ Outputs 1\nMath.round(0.1); \/\/ Outputs 0\n\nMath.floor(0.9); \/\/ Outputs 0\nMath.ceil(0.9); \/\/ Outputs 1\nMath.round(0.9); \/\/ Outputs 1\n\nMath.floor(0.5); \/\/ Outputs 0\nMath.ceil(0.5); \/\/ Outputs 1\nMath.round(0.5); \/\/ Outputs 1\n<\/code><\/pre>\n<\/p><\/div>\n
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            2<\/span> <\/p><\/div>\n<\/div>\n
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solved What exactly does Math.floor do? <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] No, in fact this line of code outputs 0: Math.floor(0.9); Math.floor always rounds to the nearest whole number that is smaller than your input. You might confuse it with Math.round, that rounds to nearest whole number. This is why this code always outputs 1 or 0, since input never gets to 2 or bigger: … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[333,357,1014],"class_list":["post-27979","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript","tag-math","tag-random"],"yoast_head":"\n[Solved] What exactly does Math.floor do? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-what-exactly-does-math-floor-do\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] What exactly does Math.floor do? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] No, in fact this line of code outputs 0: Math.floor(0.9); Math.floor always rounds to the nearest whole number that is smaller than your input. 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