Set focus on Extjs textfield

Question

Currently I got problem with setting focus on extjs textfield. When form show, I want to set focus to First name text box and I try to use build in function focus() but stil

Answer 1

I have also been struggling with getting the focus on a text box in the Internet Explorer(As the above suggestions are working fine in chrome and Firefox). Tried the solutions suggested above on this page but none of them worked in IE. After so many research I got the workaround that worked for me, I hope it will be helpful to others as well:

Use focus(true) or if you want to delay this then use focus(true, 200) simply. In ref of the above problem the code would be:

  {
        fieldLabel: 'First Name',
        name: 'first',
        id: 'first_name',
        allowBlank: false,
        listeners: {
          afterrender: function(field) {
            field.focus(true);
          }
        }
    }