Is My Variable Really a String?

How to Verify a Variable's String Nature in JavaScript

In JavaScript, it's crucial to be able to discern whether a variable is a string or otherwise. The following approaches serve this purpose:

The typeof Operator: The typeof operator, when applied to a string, returns the string "string." Therefore, you can employ the following conditional statement:

if (typeof variable === 'string') {
  // Variable is a string
} else {
  // Variable is something else
}

The instanceof Operator: The instanceof operator evaluates if an object is an instance of a particular class. As strings in JavaScript are instances of the String class, you can use:

if (variable instanceof String) {
  // Variable is a string
} else {
  // Variable is something else
}

Alternatively, you can combine both methods for more thorough checks:

if (typeof variable === 'string' || variable instanceof String) {
  // Variable is a string
} else {
  // Variable is something else
}

This multifaceted approach ensures accurate string identification, taking into account both object type and primitive value considerations.

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