javascript - How to validate a currency input -

i creating form, , includes salary, need check if input value salary valid currency , has 2 decimal places because database accepts. if input salary has alphabets (a-z) or symbols (!@#%^&*() except $ or other currency sign) should change border color.

example:

  10000.00   25846.00   213464.12 

code:

function isnumeric(){    var numeric = document.getelementbyid("txtsalary").value;    var regex  = /^\d+(?:\.\d{0,2})$/;    if (regex.test(numeric)){      $("#txtsalary").css("border-color","#ffffff");    }else{       $("#txtsalary").css("border-color","#ff0000");    }  }   

this working wanted too, problem got 6 more input boxes needs kind of validation. how can make function, when called change border-color of specific selector , return false value not numeric like:

isnumeric(selector);  function isnumeric(selector){     var regex  = /^\d+(?:\.\d{0,2})$/;      $(selector).filter(function() {         return (regex.test(this.value));      }).css("border-color","#ff0000");     } 

thanks!

try use html5 pattern directly on input:

<input type='text' pattern='^\d+(?:\.\d{0,2})$'/> 

it works modern browsers. make border red if pattern false