Check if a variable is a string in JavaScript

Question

Check if a variable is a string in JavaScript

How might I decide if a variable is a string or something different in JavaScript?

string javascript

4 years ago by Kajalsi45d

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**aashaykumar** · Answer 1 · 2021-06-02T10:14:47

aashaykumar

This is what works for me:



if (typeof myVar === 'string' || myVar instanceof String)

// it's a string

else

// it's something else

4 years ago

**sandhya6gczb** · Answer 2 · 2021-06-03T11:03:12



if (s && typeof s.valueOf() === "string") {

  // s is a string

}

Works for both string literals let s = 'blah' and for Object Strings let s = new String('blah')

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Check if a variable is a string in JavaScript

2 Answers

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