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    Referencia de JavaScript

    Objetos globales

    Valor de las propiedades

    Las propiedades globales regresan un valor simple.
     

    Propiedades de la Función

    Funciones globales retornando el resultado de una rutina específica.

    Objetos fundamentales

    Objetos del lenguaje en general, funciones y errores.
     

    Números y fechas

    Objetos relacionados con números, fechas y cálculos matemáticos.

    Procesamiento de textos

    Objetos para la manipulación de textos.

     
     

    Sentencias

    For an alphabetical listing see the sidebar on the left.

    Control flow

    Block
    A block statement is used to group zero or more statements. The block is delimited by a pair of curly brackets.
    break
    Terminates the current loop, switch, or label statement and transfers program control to the statement following the terminated statement.
    continue
    Terminates execution of the statements in the current iteration of the current or labeled loop, and continues execution of the loop with the next iteration.
    Empty
    An empty statement is used to provide no statement, although the JavaScript syntax would expect one.
    if...else
    Executes a statement if a specified condition is true. If the condition is false, another statement can be executed.
    switch
    Evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case.
    throw
    Throws a user-defined exception.
    try...catch
    Marks a block of statements to try, and specifies a response, should an exception be thrown.

    Declarations

    var
    Declares a variable, optionally initializing it to a value.
    let
    Declares a block scope local variable, optionally initializing it to a value.
    const
    Declares a read-only named constant.

    Functions

    function
    Declares a function with the specified parameters.
    function*
    Generators functions enable writing iterators more easily.
    return
    Specifies the value to be returned by a function.
    yield
    See New_in_JavaScript 1.7 & Iterators and generators

    Iterations

    do...while
    Creates a loop that executes a specified statement until the test condition evaluates to false. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.
    for
    Creates a loop that consists of three optional expressions, enclosed in parentheses and separated by semicolons, followed by a statement executed in the loop.
    for each...in
    Iterates a specified variable over all values of object's properties. For each distinct property, a specified statement is executed.
    for...in
    Iterates over the enumerable properties of an object, in arbitrary order. For each distinct property, statements can be executed.
    for...of
    Iterates over iterable objects (including array, array-like objects, iterators and generators), invoking a custom iteration hook with statements to be executed for the value of each distinct property.
    while
    Creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.

    Others

    debugger
    Invokes any available debugging functionality. If no debugging functionality is available, this statement has no effect.
    export
    Used to allow a signed script to provide properties, functions, and objects to other signed or unsigned scripts. This ancient Netscape functionality has been removed and will be redefined by ECMAScript 6 modules.
    import
    Used to allow a script to import properties, functions, and objects from a signed script that has exported the information. This ancient Netscape functionality has been removed and will be redefined by ECMAScript 6 modules.
    label
    Provides a statement with an identifier that you can refer to using a break or continue statement.
    with
    Extends the scope chain for a statement.

    Expresiónes y Operadores

    Gramática léxica

    Apéndice - Características Desaprobadas

    Original Document At: http://devedge-temp.mozilla.org/libr...1.5/reference/

    Etiquetas y colaboradores del documento

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    Contributors to this page: Sheppy, Scipion, zerospalencia, Nathymig, Mgjbot, teoli, DSN_XP, Talisker, ADP13
    Última actualización por: teoli,