Script that applies f.setAction to text fields with specific names using some type of wildcard

Want to be able to look for different text fields in the document and make changes to the text fields that have a certain text in their name. 

Document has 50 text fields, but I am looking of the ones that are called HoursRow, followed by a number, so HoursRow1 HoursRow2  (total of 15 HourRow)etc 

Is there a way to put in some type of wildcard in results of getting all the text fields. Because I want to be able to change the color and format with the script for ONLY HourRow text fields

This did NOT work

for (var i = 0; i < this.numFields; i++) {
    var fname = this.getNthFieldName(i);
    var f = this.getField(fname);

    // Check if the field value contains "HoursRow"
    if (f.type === "text" && /HoursRow/.test(fname.value)) {
        // Apply your actions only to fields containing "HoursRow" in their value
        f.setAction("Format", "AFNumber_Format(2, 0, 0, 0, \"\", true);");
        f.setAction("Keystroke", "AFNumber_Keystroke(2, 0, 0, 0, \"\", true);");
        f.fillColor = color.red;
    }
}

If I put in code below it changes ALL text fields which I do not want to do 

for ( var i=0; i < this.numFields; i++) {
    var fname = this.getNthFieldName(i);
    var f = this.getField(fname);
    if ( f.type == "text" ) f.setAction("Format", "AFNumber_Format(2, 0, 0, 0, \"\", true);");
    f.setAction("Keystroke", "AFNumber_Keystroke(2, 0, 0, 0, \"\", true);");
f.fillColor = color.red; }

 On the same line, is it possible to change range of  text field name, same example

HoursRow1 HoursRow2 etc to only Hours1 Hours2 etc 

Thanks