GlobalFunctionsparseIntbeginner

parseInt — non-numeric string returns NaN

📖 Usage Example

parseInt('abc')          // → NaN
isNaN(parseInt('abc'))   // → true

parseInt() returns NaN when the string does not start with a parseable integer.

parseInt NaN

parseInt('abc') cannot be parsed and returns NaN.

Challenge: Verify that isNaN(parseInt('abc')) is true.

💡 Hints (1)

5/40