Converting C# regular expression to JavaScript regular expression -

I have created a regular expression in C # that I am using in model recognition. I have the same requirements in javascript Please help me convert.

There is a regular expression in C #

  [required] [display (name = "cost")] [datatype (query)] [regular expression (@ "^ (([A-zA-Z] + | | (\ d {0,15}. \ D {0,2})) $", error message = "cost can not be more than 2 decimal places ") [Range (type)," 0.01 "," 99999999999999.99 ", errormess =" {0} must be greater than one decimal / number 0 and less than 100 billion billion. ")] Public taps qualified & lt; Decimal & gt; Cost {Received; Set; }   
  and another verification message should be "Number one field"   
 I'm trying in JavaScript like this    var regExp = new RegExp ("(([a-zA-Z] +) | (\ d {0,15}. \ D {0,2})));); var res = RegExp.test ($ ('# cost'). Val ());   
 But it always gives the truth  
 thanks   
 
 
 If you are trying to verify that the cost must be 2 decimal places, then "or" part in your regex To any alpha string Account:  
  ^ (\ d {0,15} \. \ D {0,2}) $   
 Note: You can enter parenthesis There is no need to be because you are not going to do anything with the value captured here  
 The regex that you mentioned will also fail in C #, but you can change your  range   
 And in the end, if you are using  New Regexp  syntax, you need to avoid slash:  
  var re = new RegExp ("^ \ \ D {0,15} \\. \\ d {0,2} $ "); // or small JS syntax var re = / ^ \ d {0,15}.   
 The sample runs:  
  console.log (re.test ("abc"); // false console.log (re.test ("10.23"); // true console.log (re.test ("10 ")); // false