Ext JS4 top applications: Set the floating prompt information of textfield

In Extjs4, we sometimes need the prompt message of textfield, but we find that textfield does not have such a configuration item.

At this time, we have to think of another method: We need to prompt the information when hovering the mouse over the textfield component, we need to listen in textfield,

 

There are two methods to hover the textfield prompt:

 

① Fixed information prompt: The render method must be used in the listener
Render: function (field, p ){
Ext. QuickTips. init ();
Ext. QuickTips. register ({
Target: field. el,
Text: 'This is a fixed message prompt for textfield! '
})
}
② Text information prompt: the prompt message is textfield text information
Var updateTip = function (field, t ){
Ext. QuickTips. init ();
Ext. QuickTips. register ({
Target: field. el,
Text: field. getValue ()
})
};

Listeners :{
Focus: function (me ){
UpdateTip (me );
},
Keyup: updateTip

}