JavaScript & Error Types
JavaScript & Error Types
JavaScript提供了8个错误对象，这些错误对象会根据错误类型在try / catch表达式中引发：
Error
EvalError
RangeError
ReferenceError
SyntaxError
TypeError
URIError
Error
message
name
EvalError
eval()
RangeError
RangeError: argument is not a valid code point
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
ReferenceError
ReferenceError: "x" is not defined
ReferenceError: assignment to undeclared variable "x"
ReferenceError: can't access lexical declaration 'X' before initialization
ReferenceError: deprecated caller or arguments usage
ReferenceError: invalid assignment left-hand side
ReferenceError: reference to undefined property "x"
SyntaxError
SyntaxError: "0"-prefixed octal literals and octal escape seq. are deprecated
SyntaxError: "use strict" not allowed in function with non-simple parameters
SyntaxError: "x" is a reserved identifier
SyntaxError: JSON.parse: bad parsing
SyntaxError: Malformed formal parameter
SyntaxError: Unexpected token
SyntaxError: Using //@ to indicate sourceURL pragmas is deprecated. Use //# instead
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: for-in loop head declarations may not have initializers
SyntaxError: function statement requires a name
SyntaxError: identifier starts immediately after numeric literal
SyntaxError: illegal character
SyntaxError: invalid regular expression flag "x"
SyntaxError: missing ) after argument list
SyntaxError: missing ) after condition
SyntaxError: missing : after property id
SyntaxError: missing ; before statement
SyntaxError: missing = in const declaration
SyntaxError: missing ] after element list
SyntaxError: missing formal parameter
SyntaxError: missing name after . operator
SyntaxError: missing variable name
SyntaxError: missing } after function body
SyntaxError: missing } after property list
SyntaxError: redeclaration of formal parameter "x"
SyntaxError: return not in function
SyntaxError: test for equality (==) mistyped as assignment (=)?
SyntaxError: unterminated string literal
TypeError
TypeError: "x" has no properties
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: 'x' is not iterable
TypeError: More arguments needed
TypeError: Reduce of empty array with no initial value
TypeError: can't access dead object
TypeError: can't access property "x" of "y"
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: cannot use 'in' operator to search for 'x' in 'y'
TypeError: cyclic object value
TypeError: invalid 'instanceof' operand 'x'
TypeError: invalid Array.prototype.sort argument
TypeError: invalid arguments
TypeError: invalid assignment to const "x"
TypeError: property "x" is non-configurable and can't be deleted
TypeError: setting getter-only property "x"
TypeError: variable "x" redeclares argument
URIError
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
refs
https://flaviocopes.com/javascript-errors/
https://flaviocopes.com/javascript-custom-errors/
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