The
vm.isContext() method is an inbuilt application programming interface of the vm module which is used to check if the stated object is being
contextified using
vm.createContext() method or not.
Syntax:
vm.isContext( object )
Parameters: This method accepts single parameter
object.
Return Value: It returns true if the stated object is being
contextified else it returns false.
Below examples illustrate the use of
vm.isContext() method in Node.js:
Example 1:
Output:
{ globalVar: 18 }
7
true
Here, globalVar in the context is 18 in output as (6*3 = 18) but the value of globalVar is still 7. Moreover, here the stated object is being contextified so true is returned.
Example 2:
Output:
{ globalVar: 3 }
7
false
Here, the stated object is not contextified so, false is returned.
Reference: https://nodejs.org/api/vm.html#vm_vm_iscontext_object
