Uncaught SyntaxError: Octal literals are not allowed in strict mode.

js Console error ：Uncaught SyntaxError: Octal literals are not allowed in strict mode.

Code scenario ：

 

The reason for the error is that ：JS Strict mode prohibits the use of eight Base number Literal , In my if Used in judgment 0 At the beginning 001, And not a string .

Change it to the following ：

 

This solves the problem of error reporting ！

reminder ： During development, we should write code strictly according to the data type negotiated with the background