Use JS to judge the input two characters, the first digit is the number 16 binary, the second is I, O, Q, u except the letter (A to Z)

The project encountered a change in customer needs, to verify the correctness of a certain data, determine the input two characters, the first digit is the number 16 binary, the second is I, O, Q, u except the letter (A to Z).

Originally to JS is not proficient, on-line reference to JS regular validation rules, using regular expressions to complete this verification.

1   functionCheck () {2             varstr = document.getElementById ("Txtenglishname"). Value;3             varreg=/^[0-9a-fa-f][^ioqu]$/;4             if(str.length!=2) {5Mybox ({title: ' Hint ', content: ' Please enter the two-character English name! The first subsystem code is the number 16 binary, the second component is the letter I, O, Q, and U except the letters (A to Z) ', width:300, height:200, Pos: ' Center ' });6                 return false;7             }8             Else {9                 if(!reg.test (str)) {TenMybox ({title: ' Hint ', content: ' Please enter the two-character English name! The first subsystem code is the number 16 binary, the second component is the letter I, O, Q, and U except the letters (A to Z) ', width:300, height:200, Pos: ' Center ' }); One                     return false; A                 }  -             } -}

Use JS to judge the input two characters, the first digit is the number 16 binary, the second is I, O, Q, u except the letter (A to Z)