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JSON์ JavaScript Object Notation์ ์ฝ์๋ค.
JSON์ ์ข ๋ ์ฝ๊ฒ ๋ฐ์ดํฐ๋ฅผ ๊ตํํ๊ณ ์ ์ฅํ๊ธฐ ์ํ์ฌ ๋ง๋ค์ด์ง ํ ์คํธ ๊ธฐ๋ฐ์ ๋ฐ์ดํฐ ๊ตํ ํ์ค์ด๋ค.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<!--
JSON: Java Script Object Notation
JQuery(Ajax) : ์ ์ผํ๊ฒ ์๋ฒ๋ ํต์ ์ด ๊ฐ๋ฅํ๊ฒ Ajax
Java Script : X
JQuery : X
Java Script : Server (Vue, react)
ํ์(pair) key : value == HashMap
web List
Ajax String
[10,20,30] -> {num:10, age:20, count:30}
Array(๋ฐฐ์ด) Json ObJect(ํค : ๋ฐธ๋ฅ)
๋งจ์ฒ์์ ๋ฐฐ์ด๊ดํธ [
{
name:"ํ๊ธธ๋",
age:24,
address:"์์ธ์" ๋
ธ๋ํ๋
},
{
name:"ํ๊ธธ๋",
age:24,
address:"์์ธ์" ๋
ธ๋๋
}
]
-->
<p id="demo"></p>
<script type="text/javascript">
let jsonData = [
{
"name":"ํ๊ธธ๋",
"age":24
},
{
"name":"์ฑ์ถํฅ",
"age":16
},
{
"name":"์ผ์ง๋งค",
"age":16
}
];
document.getElementById("demo").innerHTML = jsonData[1].name + " " + jsonData[1].age;
let arrText = '{"name":"ํ๊ธธ๋","age":"24","์ฃผ์":"์์ธ์"}'
//alert(arrText);
let jsonObj = JSON.parse(arrText); //String์ Json์ผ๋ก ๋ฐ๊พธ์ด์ค
//alert(jsonObj);
let strObj = JSON.stringify(jsonObj); //Json์ String์ผ๋ก ๋ฐ๊พผ๊ฒ (ํ์ธ์ฉ์ผ๋ก ์ฌ์ฉ)
document.getElementById("demo").innerHTML = jsonObj.name + " " + jsonObj.์ฃผ์;
//alert(strObj);
</script>
</body>
</html>
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