Underscore.js every some contains invoke pluck

_.every () matches all, all by returning true, returning Boolean

_every (list, pre);

All elements in the list return true through the pre's Truth detection.

_.some () matches all, has an eligible return true, returns a Boolean

A value in list that returns true through the Pre's Truth detection.

_.contains () returns True if the list contains the specified value;

_.contains (list, value); use = = = To detect if it is not using indexof () in the array;

_. invoke () executes the MethodName method on each element of the list.

_.invoke (list, methodName, *arg);

_.pluck () extracts an attribute value from an array of objects, returning an array

_.pluck (list, pro);