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Bitovi

unshift

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Add items to the beginning of a DefineList.

list.unshift(...items)

unshift adds items onto the beginning of a DefineList.

var list = new DefineList(['Alice']);

list.unshift('Bob', 'Eve');
list; // DefineList['Bob', 'Eve', 'Alice']

Parameters

  1. items {*}:

    The items to add to the DefineList.

Returns

{Number}:

The new length of the DefineList.

Use

If you have an array you want to concatenate to the beginning of the DefineList, you can use apply:

var names = ['Bob', 'Eve'],
    list = new DefineList(['Alice']);

list.unshift.apply(list, names);
list.get(); // ['Bob', 'Eve', 'Alice']

Events

unshift causes add and length events to be fired.

See also

unshift has a counterpart in shift, or you may be looking for push and its counterpart pop.

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

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