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some

  • Edit on GitHub

Return true if at least one item in a list matches a predicate.

list.some( callback [,thisArg] )

Tests each item in list by calling callback on it. If callback returns truthy for some element in list, some returns true.

var names = new DefineList(["alice","adam","zack","zeffer"]);
var aNames = names.some(function(name){
  return name[0] === "a"
});
aNames //-> false

Parameters

  1. callback {function(item, index, list)}:

    A function to call with each element of the DefineList. The three parameters that callback gets passed are:

    • item (*) - the element at index.
    • index (Integer) - the index of the current element of the list.
    • list (DefineList) - the DefineList the elements are coming from.

    If callback returns a falsy result, some will evaluate the callback on the next element. Otherwise, some will return true.

  2. thisArg {Object}:

    What this should be in the callback.

Returns

{Boolean}:

false if calling the callback on some element in list returns a falsy value, true otherwise.

list.some( props )

Tests each item in list by comparing its properties to props. If props match for some element in list, some returns true.

var todos = new DefineList([
  {name: "dishes", complete: false},
  {name: "lawn", complete: true}
]);
var complete = todos.some({complete: true});
complete //-> false

Parameters

  1. props {Object}:

    An object of key-value properties. Each key and value in props must be present on an item for the item to match.

Returns

{Boolean}:

false if every element in list fails to match props, true otherwise

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 3.14.1.

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