JavaScript RangeError Argument is not a valid code point
This JavaScript exception Invalid code point occurs if NaN values, negative Integers, non-Integers, or other values larger than 0x10FFFF are used with the String.fromCodePoint() method.
Output:
RangeError: {0} is not a valid code point (Firefox)
RangeError: Invalid code point {0} (Chromium)Error Type:
RangeError
Cause of the error: The String.fromCodePoint() is used to return a string created using the sequence of code points that are specified as parameters. It throws this error if the passed code point values are NaN values, negative Integers, non-Integers, or values larger than 0x10FFFF.
Example 1: This example works without throwing any error because the value passed to the method is valid.
HTML
<head> <script src= </script></head><body style="text-align: center;"> <h1 style="color: green;"> GeeksforGeeks </h1> <p> JavaScript RangeError Argument is not a valid code point </p> <button onclick="Geeks();"> click here </button> <p id="GFG_DOWN"></p> <script> var el_down = document.getElementById("GFG_DOWN"); function Geeks() { try { String.fromCodePoint(34); el_down.innerHTML = "'Argument is not a valid code point'" + " error has not occurred"; } catch (e) { // Show the error in console console.log(e); el_down.innerHTML = "'Argument is not a valid code point'" + " error has occurred"; } } </script></body> |
Output:
Example 2: In this example, the value passed to the method is NaN, which is an invalid value, therefore the error has occurred.
HTML
<head> <script src= </script></head><body style="text-align: center;"> <h1 style="color: green;"> GeeksforGeeks </h1> <p> JavaScript RangeError Argument is not a valid code point </p> <button onclick="Geeks();"> click here </button> <p id="GFG_DOWN"></p> <script> var el_down = document.getElementById("GFG_DOWN"); function Geeks() { try { String.fromCodePoint(NaN); el_down.innerHTML = "'Argument is not a valid code point'" + " error has not occurred"; } catch (e) { // Show the error in console console.log(e); el_down.innerHTML = "'Argument is not a valid code point'" + " error has occurred"; } } </script></body> |
Output:
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