- Parameters are variables listed as a part of the function definition.
- Arguments are the values that are passed while invoking the function.
A function with parameters or arguments accepts some values when it is called. Basically, arguments are the values that you pass to a function, which has corresponding parameters to store them.
- An object-based scripting language that supports polymorphism, encapsulation, and to some extent also inheritance.
Interpreted Language: It does not need to be compiled like Java and C which require a compiler.
- An argument is an object that is accessible inside a function that contains the values of the arguments passed to that function.
- The Arguments object is only available inside non-arrow functions. Although it is not an array, we can access the elements using the index, and it has a length property that holds the number of arguments passed to the function.
- The arguments object contains all the arguments passed during the function call, even if the function declaration does not have as many parameters.
We can update the value of the arguments:
- If we change the value of a parameter inside a function without any rest, default, or reconstituted parameters, it will be updating in the argument object and vice versa.
- But if we use rest, default, or reconstituted parameters in a function, there will be no synchronization between arguments and variables.
- Length → contains the number of arguments passed to the function.
- The callee → contains the currently executing function reference.
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