filterKeys()

Gets the keys of the specified object using Object.keys() and filters the keys using a callback function.

This function is valid in v2.23.0 to v2.24.3. This function has been downloaded 38 times.

Parameters

{*} obj
The object whose key/value pairs should be examined and whose keys will potentially be returned.
{Function} tester
The callback function which will be called for each key/value pair in obj. This function will be passed (1) the key, (2) the value and (3) a reference to obj. For each property the return value will be coerced to a boolean and will be used to see if the property name should be returned.
{boolean=} opt_negate Optional, Default:false
Optional value indicating whether or not to negate the results of each call to tester(). If false-ish the tester() callback should return a true-ish value for any properties should be kept. If true-ish the tester() callback should return a false-ish value for any properties that should be kept.

Returns

{Array}
An array of the keys retrieved from obj.

Required Function

This function directly requires the following function which is included automatically:

  • filterPropNames()
    Gets the property names of the specified object using Object.getOwnPropertyNames() and filters the property names using a callback function.

Requiring Function

This function is directly required by the following function:

  • filterPropNames()
    Gets the property names of the specified object using Object.getOwnPropertyNames() and filters the property names using a callback function.