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---
title: 'SyntaxError: JSON.parse: bad parsing'
slug: Web/JavaScript/Reference/Errors/JSON_bad_parse
translation_of: Web/JavaScript/Reference/Errors/JSON_bad_parse
---
<div>{{jsSidebar("Errors")}}</div>
<h2 id="메시지">메시지</h2>
<pre class="syntaxbox">SyntaxError: JSON.parse: unterminated string literal
SyntaxError: JSON.parse: bad control character in string literal
SyntaxError: JSON.parse: bad character in string literal
SyntaxError: JSON.parse: bad Unicode escape
SyntaxError: JSON.parse: bad escape character
SyntaxError: JSON.parse: unterminated string
SyntaxError: JSON.parse: no number after minus sign
SyntaxError: JSON.parse: unexpected non-digit
SyntaxError: JSON.parse: missing digits after decimal point
SyntaxError: JSON.parse: unterminated fractional number
SyntaxError: JSON.parse: missing digits after exponent indicator
SyntaxError: JSON.parse: missing digits after exponent sign
SyntaxError: JSON.parse: exponent part is missing a number
SyntaxError: JSON.parse: unexpected end of data
SyntaxError: JSON.parse: unexpected keyword
SyntaxError: JSON.parse: unexpected character
SyntaxError: JSON.parse: end of data while reading object contents
SyntaxError: JSON.parse: expected property name or '}'
SyntaxError: JSON.parse: end of data when ',' or ']' was expected
SyntaxError: JSON.parse: expected ',' or ']' after array element
SyntaxError: JSON.parse: end of data when property name was expected
SyntaxError: JSON.parse: expected double-quoted property name
SyntaxError: JSON.parse: end of data after property name when ':' was expected
SyntaxError: JSON.parse: expected ':' after property name in object
SyntaxError: JSON.parse: end of data after property value in object
SyntaxError: JSON.parse: expected ',' or '}' after property value in object
SyntaxError: JSON.parse: expected ',' or '}' after property-value pair in object literal
SyntaxError: JSON.parse: property names must be double-quoted strings
SyntaxError: JSON.parse: expected property name or '}'
SyntaxError: JSON.parse: unexpected character
SyntaxError: JSON.parse: unexpected non-whitespace character after JSON data
</pre>
<h2 id="에러_타입">에러 타입</h2>
<p>{{jsxref("SyntaxError")}}</p>
<h2 id="뭐가_잘못됬나요">뭐가 잘못됬나요?</h2>
<p>{{jsxref("JSON.parse()")}} 는 문자열을 JSON으로 파싱한다. 이 문자열은 유효한 JSON 형태의 문자열이어야 하며, 유효하지 않을 경우 에러가 발생한다.</p>
<h2 id="예제">예제</h2>
<h3 id="JSON.parse()_는_여분의_콤마를_허용하지_않는다."><code>JSON.parse()</code> 는 여분의 콤마를 허용하지 않는다.</h3>
<p>다음 두 줄은 SyntaxError를 발생시킨다:</p>
<pre class="brush: js example-bad">JSON.parse('[1, 2, 3, 4,]');
JSON.parse('{"foo": 1,}');
// SyntaxError JSON.parse: unexpected character
// at line 1 column 14 of the JSON data
</pre>
<p>끝에 오는 콤마를 제거하면 정확하게 JSON으로 파싱한다:</p>
<pre class="brush: js example-good">JSON.parse('[1, 2, 3, 4]');
JSON.parse('{"foo": 1}');</pre>
<h3 id="프로퍼티_이름은_반드시_쌍따옴표로_표현해야_한다.">프로퍼티 이름은 반드시 쌍따옴표로 표현해야 한다.</h3>
<p>'foo'처럼 프로퍼티를 작은 따옴표로 감싸서는 안된다.</p>
<pre class="brush: js example-bad">JSON.parse("{'foo': 1}");
// SyntaxError: JSON.parse: expected property name or '}'
// at line 1 column 2 of the JSON data</pre>
<p>대신에 "foo" 처럼 써야 한다:</p>
<pre class="brush: js example-good">JSON.parse('{"foo": 1}');</pre>
<h3 id="리딩_제로와_십진_소수점">리딩 제로와 십진 소수점</h3>
<p>01 처럼 리딩제로를 사용할 수 없고, 십진 소수점 뒤에는 최소한 하나의 숫자는 등장해야 한다.</p>
<pre class="brush: js example-bad">JSON.parse('{"foo": 01}');
// SyntaxError: JSON.parse: expected ',' or '}' after property value
// in object at line 1 column 2 of the JSON data
JSON.parse('{"foo": 1.}');
// SyntaxError: JSON.parse: unterminated fractional number
// at line 1 column 2 of the JSON data
</pre>
<p>대신에 리딩제로를 없애고 1 이라고 쓰고, 십진 소수점 뒤에는 반드시 하나 이상의 숫자를 적도록 한다:</p>
<pre class="brush: js example-good">JSON.parse('{"foo": 1}');
JSON.parse('{"foo": 1.0}');
</pre>
<h2 id="또다른_내용">또다른 내용</h2>
<ul>
<li>{{jsxref("JSON")}}</li>
<li>{{jsxref("JSON.parse()")}}</li>
<li>{{jsxref("JSON.stringify()")}}</li>
</ul>
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