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My Tech Blog (๋ฐ์ดํ„ฐ)

Sensor1_X:66,Sensor1_Y:69,Sensor1_Z:61,Sensor2_X:-14,Sensor2_Y:20,Sensor2_Z:-20….(์ค‘๋žต)>์ด๋Ÿฐ ๊ฒŒ ๊ณ„์† ๋ฐ˜๋ณต๋จ , ๊ธฐ์ค€์œผ๋กœ ๋ฐ์ดํ„ฐ ๋‚˜๋ˆ„๋ ค๊ณ  ํ•จ. data = "Sensor1_X:70,Sensor1_Y:53,Sensor1_Z:73,Sensor2_X:1,Sensor2_Y:1,Sensor2_Z:1" # ์˜ˆ์‹œ ๋ฐ์ดํ„ฐ# ','๋กœ ๋ฐ์ดํ„ฐ๋ฅผ ๋‚˜๋ˆ”sensor_data = data.split(',')# ':'๋กœ ๋‹ค์‹œ ๋‚˜๋ˆ„์–ด์„œ ๊ฐ๊ฐ์˜ ์„ผ์„œ ๊ฐ’ ์ถ”์ถœsensor_dict = {}for sensor in sensor_data: sensor_name, value = sensor.split(':') sensor_dict[sensor_name] = int(..
// JSON ๋ฐ์ดํ„ฐ ๋‹ค๋ฃจ๊ธฐ ์œ„ํ•œ JS ์‚ฌ์šฉ๋ฒ•// [1] : ๋ฐ์ดํ„ฐ const person = [ `{"name":"์ด์ˆœ์‹ ","age":20,"nationality":"๋Œ€ํ•œ๋ฏผ๊ตญ"}`, {"name":"๋งฅ์•„๋”","age":30,"nationality":"๋ฏธ๊ตญ"}, {"name":"์—˜๋ฆฌ์ž๋ฒ ์Šค","age":40,"nationality":"์˜๊ตญ"}, {"name":"์ž”๋‹ค๋ฅดํฌ","age":50,"nationality":"ํ”„๋ž‘์Šค"},]; console.log(typeof person); // objectconsole.log(typeof person[0]); // stringconsole.log(typeof person[1]); // object ์ฒซ๋ฒˆ์งธ ์š”์†Œ๋ฅผ ์ž‘์€ ๋”ฐ์˜ดํ‘œ๋กœ ๊ฐ์‹ธ๋ฉด string ..
JSON๊ณผ XML์€ ๋ฐ์ดํ„ฐ๋ฅผ ํ‘œํ˜„ํ•˜๊ณ  ์ „์†กํ•˜๊ธฐ ์œ„ํ•ด ์‚ฌ์šฉํ•˜๋Š” ๋‘ ๊ฐ€์ง€ ํ˜•์‹์ด๋‹ค.1. XMLXML์€ ๋ฐ์ดํ„ฐ๋ฅผ ์ €์žฅํ•˜๊ณ  ์ „๋‹ฌํ•  ๋ชฉ์ ์œผ๋กœ ๋งŒ๋“ค์–ด์กŒ์œผ๋ฉฐ, ์ €์žฅ๋˜๋Š” ๋ฐ์ดํ„ฐ์˜ ๊ตฌ์กฐ๋ฅผ ๊ธฐ์ˆ ํ•˜๊ธฐ ์œ„ํ•œ ์–ธ์–ด์ด๋ฉฐ EXtensible Markup Language์˜ ์•ฝ์ž์ด๋‹ค. - XML์€ ๋‹ค๋ฅธ ๋ชฉ์ ์˜ ๋งˆํฌ์—… ์–ธ์–ด๋ฅผ ๋งŒ๋“œ๋Š” ๋ฐ ์‚ฌ์šฉ๋˜๋Š” ๋‹ค๋ชฉ์  ๋งˆํฌ์—… ์–ธ์–ด- XML์€ ๋‹ค๋ฅธ ์‹œ์Šคํ…œ๋ผ๋ฆฌ ๋‹ค์–‘ํ•œ ์ข…๋ฅ˜์˜ ๋ฐ์ดํ„ฐ๋ฅผ ์†์‰ฝ๊ฒŒ ๊ตํ™˜ํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ด์ค€๋‹ค.- XML์€ ์ƒˆ๋กœ์šด ํƒœ๊ทธ๋ฅผ ๋งŒ๋“ค์–ด ์ถ”๊ฐ€ํ•ด๋„ ๊ณ„์†ํ•ด์„œ ๋™์ž‘ํ•˜๋ฏ€๋กœ, ํ™•์žฅ์„ฑ์ด ์ข‹๋‹ค. - XML์€ ๋ฐ์ดํ„ฐ๋ฅผ ๋ณด์—ฌ์ฃผ์ง€ ์•Š๊ณ , ๋ฐ์ดํ„ฐ๋ฅผ ์ „๋‹ฌํ•˜๊ณ  ์ €์žฅํ•˜๋Š” ๊ฒƒ๋งŒ์„ ๋ชฉ์ ์œผ๋กœ ํ•œ๋‹ค.- XML์€ ํ…์ŠคํŠธ ๋ฐ์ดํ„ฐ ํ˜•์‹์˜ ์–ธ์–ด๋กœ ๋ชจ๋“  XML ๋ฌธ์„œ๋Š” ์œ ๋‹ˆ์ฝ”๋“œ ๋ฌธ์ž๋กœ๋งŒ ์ด๋ฃจ์–ด์ง„๋‹ค.XML ๊ธฐ๋ฐ˜์˜ ์–ธ์–ด XHTML, SVG,..
๐Ÿ“ JavaScript ๐Ÿ–ฅ๏ธ ๋ฐฐ์—ด ๊ฐ์ฒด(Array Object)์˜ค๋Š˜์€ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ๋ฐฐ์—ด์— ๋Œ€ํ•ด ์•Œ์•„๋ณผ๊ฒŒ์š”.โ€‹๋ณ€์ˆ˜์—๋Š” 1๊ฐœ์˜ ๋ฐ์ดํ„ฐ๋งŒ ์ €์žฅ ํ•  ์ˆ˜ ์žˆ์ง€๋งŒ, ์—ฌ๋Ÿฌ ๊ฐœ์˜ ๋ฐ์ดํ„ฐ๋ฅผ ํ•˜๋‚˜์˜ ์ €์žฅ์†Œ์— ์ €์žฅํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ์–ด๋–ป๊ฒŒ ํ•ด์•ผ ํ• ๊นŒ์š”? ๋ฐฐ์—ด ๊ฐ์ฒด๋ฅผ ์ƒ์„ฑํ•ด ์ฃผ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. ๋ฐฐ์—ด์„ ์„ ์–ธํ•˜๋ฉด ์•„๋ž˜ ๊ทธ๋ฆผ์ฒ˜๋Ÿผ ๊ฐ๊ฐ์˜ ๋ฐ์ดํ„ฐ๊ฐ€ ๋‚˜๋ˆ„์–ด์ง„ ์ €์žฅ์†Œ์— ๋“ค์–ด๊ฐ‘๋‹ˆ๋‹ค.,  ๊ฐ ์ €์žฅ์†Œ๋Š” ์ธ๋ฑ์Šค ๋ฒˆํ˜ธ(๋ฒˆ์ง€์ˆ˜)๊ฐ€ ๋ถ€์—ฌ๋ฉ๋‹ˆ๋‹ค. ์ธ๋ฑ์Šค ๋ฒˆํ˜ธ๋Š” 0๋ฒˆ๋ถ€ํ„ฐ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.  โœ… 1. ๋ฐฐ์—ด (Array)์„ ์„ ์–ธํ•˜๋Š” 3๊ฐ€์ง€ ๋ฐฉ๋ฒ• 1. Array ์ƒ์„ฑ์ž๋กœ ๋ฐฐ์—ด ์ƒ์„ฑ 12. Array ์ƒ์„ฑ์ž๋กœ ๋ฐฐ์—ด ์ƒ์„ฑ 23. ๋ฆฌํ„ฐ๋Ÿด(๋Œ€๊ด„ํ˜ธ) ์‚ฌ์šฉํ•˜์—ฌ ๋ฐฐ์—ด ์ƒ์„ฑ 1-1. Array ์ƒ์„ฑ์ž๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๋ฐฐ์—ด ์ƒ์„ฑํ•˜๊ธฐ 1let ์ฐธ์ดˆ ๋ณ€์ˆ˜ = new Array();์ฐธ์กฐ๋ณ€์ˆ˜[0..
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