Using function.bind to Create New Functions
The bind() method does not invoke a function but instead takes an existing function and creates a new function with a specified value for "this" inside the new function.
The syntax of the bind() method is:
bind(thisArg, arg1, arg2, ….) // arg1 and arg2 are optional
Syntax
bind(thisArg) bind(thisArg, arg1) bind(thisArg, arg1, arg2) bind(thisArg, arg1, arg2, /* …, */ argN)
Parameters
thisArg-
The value to be passed as the
thisparameter to the target functionfuncwhen the bound function is called. If the function is not in strict mode,nullandundefinedwill be replaced with the global object, and primitive values will be converted to objects. The value is ignored if the bound function is constructed using thenewoperator. arg1, …, argNOptional-
Arguments to prepend to arguments provided to the bound function when invoking
func.
Return value
A copy of the given function with the specified this value, and initial arguments (if provided).