Question

In extjs combobox, we have valueField, displayField. There is one getValue(). But there is no getDisaplay(). So how to capture the name of the dispay field?

Answer 1

Use the value to get the record out of the store, and get the display value from there.

Abstractly, you can use this code, but you might substitute some of the variables for known values to make it more readable:

getComboDisplay = function(combo) {
    var value = combo.getValue();
    var valueField = combo.valueField;
    var record;
    combo.getStore().each(function(r){
        if(r.data[valueField] == value){
            record = r;
            return false;
        }
    });

    return record ? record.get(combo.displayField) : null;
}