Regex to not allow special characters (Javascript) [closed]

Question

I have a following requirement to only allow capital letters and , in a javascript form . I am unsure on how to check for special characters and script tags . I have written the following code . I do not want to allow characters such as $,%,& etc .

var upperCase= new RegExp('[A-Z]');
var lowerCase= new RegExp('^[a-z]');
var numbers = new RegExp('^[0-9]');

if($(this).val().match(upperCase) && $(this).val().match(lowerCase) &&   $(this).val().match(numbers))  
{
    $("#passwordErrorMsg").html("OK")

}

Answer 1

This may be helpful. javascript regexp remove all special characters if the only characters you want are numbers, letters, and ',' then you just need to whitespice all characters that are not those

$(this).val().replace(/[^\w\s\][^,]/gi, '')