This JavaScript warning 08 (or 09) is not a legal ECMA-262 octal constant that occurs if the literals 08 or 09 are used as a number. This occurs because these literals cannot be treated as an octal number.
Message:
Warning: SyntaxError: 08 is not a legal ECMA-262 octal constant. Warning: SyntaxError: 09 is not a legal ECMA-262 octal constant.
Error Type:
Warning. JavaScript execution won't be halted.
Cause of Error: This happens when any of the digits after the leading 0 is equal to or greater than 8. This number cannot be treated as an octal number and therefore JavaScript gives a warning about it.
Example 1: In this example, the literal ’08’ gives a warning because it can not be interpreted as an octal number.
Javascript
"use strict";// Error here08; |
Output:
Warning: SyntaxError: 08 is not a legal ECMA-262 octal constant.
Example 2: In this example, the literal ’09’ gives a warning because it can not be interpreted as an octal number.
Javascript
"use strict";// Error here09; |
Output:
Warning: SyntaxError: 09 is not a legal ECMA-262 octal constant.
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