61⟩ Tell me what is use of combo select event function?
To get the selected value from a combo.using getvalue();
var selectedComboValue = mycombo1.getValue();
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65 Ext JS Questions And Answers
62⟩ Tell me how to apply css on select of combo box?
using config option as
emptyClass : 'emptycss', where emptycss is a css classname
63⟩ Explain how to register callbacks to the load and exception events of the JsonStore?
var grid = new Ext.grid.GridPanel({
store: new Ext.data.JsonStore({
[...]
listeners: {
load: this.onLoadSuccess.crateDelegate(this),
exception: this.onLoadException.createDelegate(this)
}
}),
onLoadSuccess: function () {
// success
},
onLoadException: function () {
// error
},
[...]
}
64⟩ Explain how to hide the column in grid panel?
using hidden : true
65⟩ Explain what are components required for grid panel?
store, columnmodel, id, width,height
46. how to disable menu option for header in columnModel?
using menuDisabled: true
