How do I exclude alphabetic characters & numbers beginning with zero, using RegEx?

I have a class that initiate this function...but I need to modify it's regex.

I would like to exclude all alphabetic characters and any numbers beginning with 0[zero].

$(开发者_开发知识库'.numeric').keyup(function () {
    $(this).toggleClass('field-error', /(0|00|000)$/.test(this.value));
}); 

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Jquery Code:

$(document).ready( function(){                          
   $('#test_regex').click( function(){
      regex= /^[a-zA-Z0]+$/;
      str= $('#reginput').val();
      result= regex.test(str);
      if( result ){
        alert("Value contains alphabet or begin with zero number");
      }else{
        alert("It's the correct value");
      }
  });
});

HTML Code:

<input type="text" id="reginput"/>
<button id="test_regex">Check Value</button>

Maybe it's what you want...

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I believe you are looking for a regex that can detect non digit characters and leading zeroes in the field. The regex below maybe of help

[^\d]+|^0

This regex when used with test function will return true if the string contains any non digit character or if it starts with digit zero. ^[a-zA-Z0]+$ will not match the string "123asd562"