JavaScript 错误参考
您将在下面找到 JavaScript 抛出的错误列表。这些错误可以成为有用的调试辅助工具，但报告的问题并不总是立即明确。下面的页面将提供有关这些错误的更多详细信息。每个错误都是基于 Error 对象的对象，并具有 name 和 message。
Web 控制台中显示的错误可能包含指向下面相应页面的链接，以帮助您快速理解代码中的问题。
有关修复 JavaScript 错误的初学者入门教程，请参阅 出了什么问题？JavaScript 故障排除。
错误列表
在此列表中，每个页面都按名称（错误类型）和消息（更详细的人类可读错误消息）列出。这两个属性共同为理解和解决错误提供了起点。欲了解更多信息，请点击下面的链接！
- AggregateError: No Promise in Promise.any was resolved
- Error: Permission denied to access property "x"
- InternalError: too much recursion
- RangeError: argument is not a valid code point
- RangeError: BigInt division by zero
- RangeError: BigInt negative exponent
- RangeError: form must be one of 'NFC', 'NFD', 'NFKC', or 'NFKD'
- RangeError: invalid array length
- RangeError: invalid date
- RangeError: precision is out of range
- RangeError: radix must be an integer
- RangeError: repeat count must be less than infinity
- RangeError: repeat count must be non-negative
- RangeError: x can't be converted to BigInt because it isn't an integer
- ReferenceError: "x" is not defined
- ReferenceError: assignment to undeclared variable "x"
- ReferenceError: can't access lexical declaration 'X' before initialization
- ReferenceError: must call super constructor before using 'this' in derived class constructor
- ReferenceError: super() called twice in derived class constructor
- SyntaxError: 'arguments'/'eval' can't be defined or assigned to in strict mode code
- SyntaxError: "0"-prefixed octal literals are deprecated
- SyntaxError: "use strict" not allowed in function with non-simple parameters
- SyntaxError: "x" is a reserved identifier
- SyntaxError: \ at end of pattern
- SyntaxError: a declaration in the head of a for-of loop can't have an initializer
- SyntaxError: applying the 'delete' operator to an unqualified name is deprecated
- SyntaxError: arguments is not valid in fields
- SyntaxError: await is only valid in async functions, async generators and modules
- SyntaxError: await/yield expression can't be used in parameter
- SyntaxError: cannot use `??` unparenthesized within `||` and `&&` expressions
- SyntaxError: character class escape cannot be used in class range in regular expression
- SyntaxError: continue must be inside loop
- SyntaxError: duplicate capture group name in regular expression
- SyntaxError: duplicate formal argument x
- SyntaxError: for-in loop head declarations may not have initializers
- SyntaxError: function statement requires a name
- SyntaxError: functions cannot be labelled
- SyntaxError: getter and setter for private name #x should either be both static or non-static
- SyntaxError: getter functions must have no arguments
- SyntaxError: identifier starts immediately after numeric literal
- SyntaxError: illegal character
- SyntaxError: import declarations may only appear at top level of a module
- SyntaxError: incomplete quantifier in regular expression
- SyntaxError: invalid assignment left-hand side
- SyntaxError: invalid BigInt syntax
- SyntaxError: invalid capture group name in regular expression
- SyntaxError: invalid character in class in regular expression
- SyntaxError: invalid class set operation in regular expression
- SyntaxError: invalid decimal escape in regular expression
- SyntaxError: invalid identity escape in regular expression
- SyntaxError: invalid named capture reference in regular expression
- SyntaxError: invalid property name in regular expression
- SyntaxError: invalid range in character class
- SyntaxError: invalid regexp group
- SyntaxError: invalid regular expression flag "x"
- SyntaxError: invalid unicode escape in regular expression
- SyntaxError: JSON.parse: bad parsing
- SyntaxError: label not found
- SyntaxError: missing : after property id
- SyntaxError: missing ) after argument list
- SyntaxError: missing ) after condition
- SyntaxError: missing ] after element list
- SyntaxError: missing } after function body
- SyntaxError: missing } after property list
- SyntaxError: missing = in const declaration
- SyntaxError: missing formal parameter
- SyntaxError: missing name after . operator
- SyntaxError: missing variable name
- SyntaxError: negated character class with strings in regular expression
- SyntaxError: new keyword cannot be used with an optional chain
- SyntaxError: nothing to repeat
- SyntaxError: numbers out of order in {} quantifier.
- SyntaxError: octal escape sequences can't be used in untagged template literals or in strict mode code
- SyntaxError: parameter after rest parameter
- SyntaxError: private fields can't be deleted
- SyntaxError: property name __proto__ appears more than once in object literal
- SyntaxError: raw bracket is not allowed in regular expression with unicode flag
- SyntaxError: redeclaration of formal parameter "x"
- SyntaxError: reference to undeclared private field or method #x
- SyntaxError: rest parameter may not have a default
- SyntaxError: return not in function
- SyntaxError: setter functions must have one argument
- SyntaxError: string literal contains an unescaped line break
- SyntaxError: super() is only valid in derived class constructors
- SyntaxError: tagged template cannot be used with optional chain
- SyntaxError: Unexpected '#' used outside of class body
- SyntaxError: Unexpected token
- SyntaxError: unlabeled break must be inside loop or switch
- SyntaxError: unparenthesized unary expression can't appear on the left-hand side of '**'
- SyntaxError: use of super property/member accesses only valid within methods or eval code within methods
- SyntaxError: Using //@ to indicate sourceURL pragmas is deprecated. Use //# instead
- TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed
- TypeError: 'x' is not iterable
- TypeError: "x" is (not) "y"
- TypeError: "x" is not a constructor
- TypeError: "x" is not a function
- TypeError: "x" is not a non-null object
- TypeError: "x" is read-only
- TypeError: already executing generator
- TypeError: BigInt value can't be serialized in JSON
- TypeError: calling a builtin X constructor without new is forbidden
- TypeError: can't access/set private field or method: object is not the right class
- TypeError: can't assign to property "x" on "y": not an object
- TypeError: can't convert BigInt to number
- TypeError: can't convert x to BigInt
- TypeError: can't define property "x": "obj" is not extensible
- TypeError: can't delete non-configurable array element
- TypeError: can't redefine non-configurable property "x"
- TypeError: can't set prototype of this object
- TypeError: can't set prototype: it would cause a prototype chain cycle
- TypeError: cannot use 'in' operator to search for 'x' in 'y'
- TypeError: class constructors must be invoked with 'new'
- TypeError: cyclic object value
- TypeError: derived class constructor returned invalid value x
- TypeError: getting private setter-only property
- TypeError: Initializing an object twice is an error with private fields/methods
- TypeError: invalid 'instanceof' operand 'x'
- TypeError: invalid Array.prototype.sort argument
- TypeError: invalid assignment to const "x"
- TypeError: Iterator/AsyncIterator constructor can't be used directly
- TypeError: matchAll/replaceAll must be called with a global RegExp
- TypeError: More arguments needed
- TypeError: null/undefined has no properties
- TypeError: property "x" is non-configurable and can't be deleted
- TypeError: Reduce of empty array with no initial value
- TypeError: setting getter-only property "x"
- TypeError: WeakSet key/WeakMap value 'x' must be an object or an unregistered symbol
- TypeError: X.prototype.y called on incompatible type
- URIError: malformed URI sequence
- Warning: -file- is being assigned a //# sourceMappingURL, but already has one
- Warning: unreachable code after return statement