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List.every method

Checks whether the specified callback function returns true for all elements in a list.

Syntax

var boolean = list.every(callback, thisArg);

Parameters

  • callback
    Type: Function

    A function that accepts up to three arguments. This function is called for each element in the list until it returns false or the end of the list is reached.

  • thisArg
    Type: Object

    An object to which the this keyword can refer in the callback function. If thisArg is omitted, undefined is used.

Return value

Type: Boolean

true if the callback returns true for all elements in the list.

Requirements

Minimum WinJS version

WinJS 1.0

Namespace

WinJS.Binding

See also

List