Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Errors/JSON_bad_parse below:

SyntaxError: JSON.parse: bad parsing - JavaScript

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

JSON.parse() 会把一个字符串解析成 JSON 对象。如果字符串书写正确，那么其将会被解析成一个有效的 JSON，但是这个字符串被检测出错误语法的时候将会抛出错误。

下面两行代码都会抛出错误：

JSON.parse("[1, 2, 3, 4, ]");
JSON.parse('{"foo" : 1, }');
// SyntaxError JSON.parse: unexpected character
// at line 1 column 14 of the JSON data

省略末尾多余的逗号解析 JSON 就是正确：

JSON.parse("[1, 2, 3, 4 ]");
JSON.parse('{"foo" : 1 }');

属性名上不能使用单引号，例如： 'foo'。

JSON.parse("{'foo' : 1 }");
// SyntaxError: JSON.parse: expected property name or '}'
// at line 1 column 2 of the JSON data

取而代之，写成 "foo"：

JSON.parse('{"foo" : 1 }');

数字不能用 0 开头，比如 01，并且你的小数点后面必须跟着至少一个数字。

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

正确的写法应该是只写一个 1，不书写前面的 0。在小数点的后面至少要跟上一个数字：

JSON.parse('{"foo" : 1 }');
JSON.parse('{"foo" : 1.0 }');

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4