Can JavaScript Functions Access the Original Variable Name?

Accessing Original Variable Name in Functions

Understanding the original name of a variable after it's passed to a function in JavaScript may raise some concerns about the feasibility of such a task. While the value of the variable is transferred to the function, the original variable name is not.

For instance, consider the following function:

function getVariableName(unknownVariable){
  return unknownVariable.originalName;
}

Invoking this function with different variable names such as foo or bar returns the same variable. But, in reality, the expected outcome would be to receive the original variable names, like "foo" for getVariableName(foo) and "bar" for getVariableName(bar).

This behavior is attributed to the scoping in JavaScript, where only the value is passed to the function, while the reference to the original variable is lost. Attempts to retrieve the original variable name, as shown in the example, will ultimately fail. Therefore, it's crucial to understand that in JavaScript, functions operate solely with the values passed to them and lack access to the original variable names.

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