Not getting Placeholder in IE11

Question

on load of my grid I am setting some default value in widget column which is tagfield type. For loading that I am using placeholder but placeholder is not working in IE11. Can any body give some soluion. I also tried this kind of answer in my solution but not working.

Placeholder CSS not being applied in IE 11 My code is :

var SValue = Obj.getAttribute('Val');
    if(field.xtype == "tagfield"){
        field.setValue(SValue);
        field.inputEl.set({'placeholder':SValue});
    }else{
        field.setValue(SValue);
    } 

This is working fine in chrome but not in IE11