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CSSStyleDeclaration JS Conversion


JavaScript JSON parse() 메서드


예시

문자열(JSON 형식으로 작성)을 구문 분석하고 JavaScript 객체를 반환합니다.

var obj = JSON.parse('{"firstName":"John", "lastName":"Doe"}');

아래에서 더 많은 "직접 사용해 보기" 예를 살펴보세요.


정의 및 사용

JSON.parse() 메서드는 문자열을 구문 분석하고 JavaScript 객체를 반환합니다.

문자열은 JSON 형식으로 작성해야 합니다.

JSON.parse() 메서드는 선택적으로 함수를 사용하여 결과를 변환할 수 있습니다.


브라우저 지원

표의 숫자는 이 방법을 완전히 지원하는 첫 번째 브라우저 버전을 지정합니다.

Method
parse() 4.0 8.0 3.5 4.0 11.5

통사론

JSON.parse(string, function)

매개변수 값

Parameter Description
string Required. A string written in JSON format
reviver function Optional. A function used to transform the result. The function is called for each item. Any nested objects are transformed before the parent.
  • If the function returns a valid value, the item value is replaced with the transformed value
  • If the function returns undefined, the item is deleted


기술적 세부 사항

반환 값: JSON 객체 또는 배열
자바스크립트 버전: ECMA스크립트 5

더 많은 예

예시

리바이버 기능 을 사용하는 방법 :

/*replace the value of "city" to upper case:*/
var text = '{ "name":"John", "age":"39", "city":"New York"}';
var obj = JSON.parse(text, function (key, value) {
  if (key == "city") {
    return value.toUpperCase();
  } else {
    return value;
  }
});

document.getElementById("demo").innerHTML = obj.name + ", " + obj.city;

예시

서버에서 받은 JSON 구문 분석:

var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
  if (this.readyState == 4 && this.status == 200) {
    var myObj = JSON.parse(this.responseText);
    document.getElementById("demo").innerHTML = myObj.name;
  }
};
xmlhttp.open("GET", "json_demo.txt", true);
xmlhttp.send();

json_demo.txt 를 살펴보십시오.


관련 페이지

JSON 튜토리얼: JSON 소개