Посібник JavaScript

Посібник з JavaScript показує, як використовувати мову JavaScript, і надає її попередній огляд. Та якщо ви шукаєте детальну інформацію щодо особливостей мови, зазирніть у Довідник з JavaScript.

Розділи

Цей посібник поділено на декілька розділів:

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Пов'язані теми
  1. JavaScript
  2. Tutorials:
  3. Complete beginners
    1. JavaScript basics
    2. JavaScript first steps
    3. JavaScript building blocks
    4. Introducing JavaScript objects
  4. JavaScript Guide
    1. Introduction
    2. Grammar and types
    3. Control flow and error handling
    4. Loops and iteration
    5. Functions
    6. Expressions and operators
    7. Numbers and dates
    8. Text formatting
    9. Regular expressions
    10. Indexed collections
    11. Keyed collections
    12. Working with objects
    13. Details of the object model
    14. Using promises
    15. Iterators and generators
    16. Meta programming
  5. Intermediate
    1. Introducing JavaScript objects
    2. Client-side web APIs
    3. A re-introduction to JavaScript
    4. JavaScript data structures
    5. Equality comparisons and sameness
    6. Closures
  6. Advanced
    1. Inheritance and the prototype chain
    2. Strict mode
    3. JavaScript typed arrays
    4. Memory Management
    5. Concurrency model and Event Loop
  7. References:
  8. Built-in objects
    1. Array
    2. ArrayBuffer [Translate]
    3. AsyncFunction [Translate]
    4. Atomics [Translate]
    5. BigInt [Translate]
    6. Boolean
    7. DataView [Translate]
    8. Date
    9. Error [Translate]
    10. EvalError [Translate]
    11. Float32Array [Translate]
    12. Float64Array [Translate]
    13. Function
    14. Generator [Translate]
    15. GeneratorFunction [Translate]
    16. Infinity [Translate]
    17. Int16Array [Translate]
    18. Int32Array [Translate]
    19. Int8Array [Translate]
    20. InternalError [Translate]
    21. Intl [Translate]
    22. Intl.Collator
    23. Intl.DateTimeFormat [Translate]
    24. Intl.ListFormat [Translate]
    25. Intl.NumberFormat [Translate]
    26. Intl.PluralRules [Translate]
    27. Intl.RelativeTimeFormat [Translate]
    28. JSON
    29. Map
    30. Math
    31. NaN
    32. Number
    33. Object
    34. Promise
    35. Проксі
    36. RangeError [Translate]
    37. ReferenceError [Translate]
    38. Reflect [Translate]
    39. RegExp
    40. Set
    41. SharedArrayBuffer [Translate]
    42. String
    43. Symbol
    44. SyntaxError
    45. TypeError [Translate]
    46. TypedArray [Translate]
    47. URIError [Translate]
    48. Uint16Array [Translate]
    49. Uint32Array [Translate]
    50. Uint8Array [Translate]
    51. Uint8ClampedArray [Translate]
    52. WeakMap [Translate]
    53. WeakSet [Translate]
    54. WebAssembly [Translate]
    55. decodeURI() [Translate]
    56. decodeURIComponent() [Translate]
    57. encodeURI() [Translate]
    58. encodeURIComponent() [Translate]
    59. escape() [Translate]
    60. eval() [Translate]
    61. isFinite() [Translate]
    62. isNaN()
    63. null
    64. parseFloat() [Translate]
    65. parseInt() [Translate]
    66. undefined
    67. unescape() [Translate]
    68. uneval() [Translate]
  9. Expressions & operators
    1. Arithmetic operators [Translate]
    2. Array comprehensions [Translate]
    3. Оператори присвоєння
    4. Bitwise operators [Translate]
    5. Comma operator [Translate]
    6. Оператори порівняння
    7. Conditional (ternary) operator [Translate]
    8. Деструктуризація
    9. Expression closures [Translate]
    10. Generator comprehensions [Translate]
    11. Grouping operator [Translate]
    12. Legacy generator function expression [Translate]
    13. Logical operators [Translate]
    14. Ініціалізація об’єктів
    15. Operator precedence [Translate]
    16. Pipeline operator [Translate]
    17. Property accessors [Translate]
    18. Spread syntax [Translate]
    19. async function expression [Translate]
    20. await
    21. class expression [Translate]
    22. delete operator [Translate]
    23. function expression [Translate]
    24. function* expression [Translate]
    25. in operator
    26. instanceof [Translate]
    27. new operator [Translate]
    28. new.target [Translate]
    29. super [Translate]
    30. this [Translate]
    31. typeof [Translate]
    32. void operator [Translate]
    33. yield [Translate]
    34. yield* [Translate]
  10. Statements & declarations
    1. Legacy generator function [Translate]
    2. async function [Translate]
    3. block [Translate]
    4. break [Translate]
    5. class [Translate]
    6. const
    7. continue [Translate]
    8. debugger [Translate]
    9. default [Translate]
    10. do...while [Translate]
    11. empty [Translate]
    12. export [Translate]
    13. for [Translate]
    14. for await...of [Translate]
    15. for each...in [Translate]
    16. for...in [Translate]
    17. for...of [Translate]
    18. function declaration [Translate]
    19. function* [Translate]
    20. if...else [Translate]
    21. import [Translate]
    22. import.meta [Translate]
    23. label [Translate]
    24. let [Translate]
    25. return [Translate]
    26. switch [Translate]
    27. throw [Translate]
    28. try...catch [Translate]
    29. var
    30. while [Translate]
    31. with [Translate]
  11. Functions
    1. Стрілкові функції
    2. Типові параметри
    3. Method definitions [Translate]
    4. Решта параметрів
    5. Об'єкт arguments
    6. getter [Translate]
    7. сетер
  12. Classes
    1. Конструктор
    2. extends [Translate]
    3. static
  13. Errors
    1. Error: Permission denied to access property "x" [Translate]
    2. InternalError: too much recursion [Translate]
    3. RangeError: argument is not a valid code point [Translate]
    4. RangeError: invalid array length [Translate]
    5. RangeError: invalid date [Translate]
    6. RangeError: precision is out of range [Translate]
    7. RangeError: radix must be an integer [Translate]
    8. RangeError: repeat count must be less than infinity [Translate]
    9. RangeError: repeat count must be non-negative [Translate]
    10. ReferenceError: "x" is not defined [Translate]
    11. ReferenceError: assignment to undeclared variable "x" [Translate]
    12. ReferenceError: can't access lexical declaration`X' before initialization [Translate]
    13. ReferenceError: deprecated caller or arguments usage [Translate]
    14. ReferenceError: invalid assignment left-hand side [Translate]
    15. ReferenceError: reference to undefined property "x" [Translate]
    16. SyntaxError: "0"-prefixed octal literals and octal escape seq. are deprecated [Translate]
    17. SyntaxError: "use strict" not allowed in function with non-simple parameters [Translate]
    18. SyntaxError: "x" is a reserved identifier [Translate]
    19. SyntaxError: JSON.parse: bad parsing
    20. SyntaxError: Malformed formal parameter [Translate]
    21. SyntaxError: Unexpected token [Translate]
    22. SyntaxError: Using //@ to indicate sourceURL pragmas is deprecated. Use //# instead [Translate]
    23. SyntaxError: a declaration in the head of a for-of loop can't have an initializer [Translate]
    24. SyntaxError: applying the 'delete' operator to an unqualified name is deprecated [Translate]
    25. SyntaxError: for-in loop head declarations may not have initializers [Translate]
    26. SyntaxError: function statement requires a name [Translate]
    27. SyntaxError: identifier starts immediately after numeric literal [Translate]
    28. SyntaxError: illegal character [Translate]
    29. SyntaxError: invalid regular expression flag "x" [Translate]
    30. SyntaxError: missing ) after argument list [Translate]
    31. SyntaxError: missing ) after condition [Translate]
    32. SyntaxError: missing : after property id [Translate]
    33. SyntaxError: missing ; before statement [Translate]
    34. SyntaxError: missing = in const declaration [Translate]
    35. SyntaxError: missing ] after element list [Translate]
    36. SyntaxError: missing formal parameter [Translate]
    37. SyntaxError: missing name after . operator [Translate]
    38. SyntaxError: missing variable name [Translate]
    39. SyntaxError: missing } after function body [Translate]
    40. SyntaxError: missing } after property list [Translate]
    41. SyntaxError: redeclaration of formal parameter "x" [Translate]
    42. SyntaxError: return not in function [Translate]
    43. SyntaxError: test for equality (==) mistyped as assignment (=)? [Translate]
    44. SyntaxError: unterminated string literal [Translate]
    45. TypeError: "x" has no properties [Translate]
    46. TypeError: "x" is (not) "y" [Translate]
    47. TypeError: "x" is not a constructor
    48. TypeError: "x" не є функцією
    49. TypeError: "x" is not a non-null object [Translate]
    50. TypeError: "x" is read-only [Translate]
    51. TypeError: 'x' is not iterable [Translate]
    52. TypeError: More arguments needed
    53. TypeError: Reduce of empty array with no initial value [Translate]
    54. TypeError: can't access dead object [Translate]
    55. TypeError: can't access property "x" of "y" [Translate]
    56. TypeError: can't define property "x": "obj" is not extensible [Translate]
    57. TypeError: can't delete non-configurable array element [Translate]
    58. TypeError: can't redefine non-configurable property "x" [Translate]
    59. TypeError: cannot use 'in' operator to search for 'x' in 'y' [Translate]
    60. TypeError: cyclic object value [Translate]
    61. TypeError: invalid 'instanceof' operand 'x' [Translate]
    62. TypeError: invalid Array.prototype.sort argument [Translate]
    63. TypeError: invalid arguments [Translate]
    64. TypeError: invalid assignment to const "x" [Translate]
    65. TypeError: property "x" is non-configurable and can't be deleted [Translate]
    66. TypeError: setting getter-only property "x" [Translate]
    67. TypeError: variable "x" redeclares argument [Translate]
    68. URIError: malformed URI sequence [Translate]
    69. Warning: -file- is being assigned a //# sourceMappingURL, but already has one [Translate]
    70. Warning: 08/09 is not a legal ECMA-262 octal constant [Translate]
    71. Warning: Date.prototype.toLocaleFormat is deprecated [Translate]
    72. Warning: JavaScript 1.6's for-each-in loops are deprecated [Translate]
    73. Warning: String.x is deprecated; use String.prototype.x instead [Translate]
    74. Warning: expression closures are deprecated [Translate]
    75. Warning: unreachable code after return statement [Translate]
    76. X.prototype.y called on incompatible type [Translate]
  14. Misc
    1. JavaScript technologies overview
    2. Lexical grammar
    3. JavaScript data structures
    4. Enumerability and ownership of properties
    5. Iteration protocols
    6. Strict mode
    7. Transitioning to strict mode
    8. Template literals
    9. Deprecated features
  15. New in JavaScript
    1. ECMAScript 2015 support in Mozilla [Translate]
    2. ECMAScript 5 support in Mozilla [Translate]
    3. ECMAScript 7 підтримка в Mozilla
    4. Firefox JavaScript changelog [Translate]
    5. New in JavaScript 1.1 [Translate]
    6. New in JavaScript 1.2 [Translate]
    7. New in JavaScript 1.3 [Translate]
    8. New in JavaScript 1.4 [Translate]
    9. New in JavaScript 1.5 [Translate]
    10. New in JavaScript 1.6 [Translate]
    11. New in JavaScript 1.7 [Translate]
    12. New in JavaScript 1.8 [Translate]
    13. New in JavaScript 1.8.1 [Translate]
    14. New in JavaScript 1.8.5 [Translate]
  16. Documentation:
  17. Useful lists
    1. All pages index
    2. Methods index
    3. Properties index
    4. Pages tagged "JavaScript"
  18. Contribute
    1. JavaScript doc status
    2. The MDN project