ExtJs NumberField

Question

I am using ExtJs NumberField. The good thing is it validates that only numbers are entered. But I want a hyphen as well. How could I go about editing the javascript

  var <portlet:namespace/>issueNoField = new Ext.form.NumberField({  //This takes only numbers
             fieldLabel: 'Issue No',
             width: 120,
             displayField: 'Enter no',  
             valueField:'IssNo'
         });

Answer 1

var <portlet:namespace/>issueNoField = new Ext.form.TextField({  //This takes only numbers
  fieldLabel: 'Issue No',
  width: 120,
  regex: /[1-9-]*/
});