Reformat number after input.

[hcrosex3]

I'm trying you have the number entered be reformatted to add dashes after validation. But it is not working. Any suggestions?

 function validateField ()
{
	var rgEX = /^(\d{2}[-]?)(\d{2}[-]?)(\d{3})$/;
        if ( ! rgEX.test( this.value ) )
        {
        	this.value = '';
 		alert("not a vln");
	} else {
    this.value = str.replace(this.value,' $1- $2- $3')
}

[Old Pedant]

Well, since you made the dashes optional in the RegExp, I would do it this way:

 function validateField ()
{
    var val = this.value.replace(/\D/g, "" ); // zap all NON-digit characters
    if ( val.length != 7 )  /* then there must be 7 digits exactly */
    {
        this.value = '';
 	alert("not a vln");
        return false; // ?? may not be needed, can't hurt
    } 
    this.value = val.substr(0,2) + "-" + val.substr(2,2) + "-" + val.substr(4);
    return true;
}