JsparseInt ("08") does not specify the Carry System _ javascript skills

If you are making a JS judgment on the month today, you can get the correct result from parseInt (& quot; 01 & quot;) to parseInt (& quot; 07 & quot, if it is parseInt (& quot; 08 & quot;) or parseInt (& quot; 09 & quot;), 0 is returned. First, check the parseInt Syntax: parseInt (string, radix ); here, string is the string to be converted, and radix is binary, octal, hexadecimal or decimal.
When radix is not specified by default, it is in hexadecimal format when 0x is switched. If 0 is switched and the second digit is not x, it is in octal format, (the error 0 is returned because there cannot be 8 or 9 in octal ).
Therefore, we should specify the carry-in system to avoid errors.
If we usually use decimal digits, we will use parseInt ("08", 10 );