Combo box Ajax

[sanjay_1985]

I have a grid, where I use a combo box as a cell editor. I populate this combo box, by sending an AJAX request to the server on keyup listener. On keyup if the length of the value typed in the combo box is 3, im sending an AJAX request. But the problem is, if the user types in the value fast, this keyup event fails to send an AJAX request. I am using Ext 3.1 version.


var cityStore = new Ext.data.JsonStore({
fields: ['value']

});

editor: new Ext.form.ComboBox({
id : 'Origin City',
store: cityStore,
//minChars: 3,
//triggerAction: 'query',
mode : 'local',
displayField:'value',
valueField :'value',
hideTrigger: true,
//forceSelection: true,
typeAhead: true,
emptyText :'Select Value',
enableKeyEvents: true,
listeners: {
keyup: function(){
var value=this.getEl().dom.value;
if(value.length==3){
Ext.Ajax.request({
url: '/ActionServlet',
timeout: 300000,
params: {
Action: 'fetchCellValues',
field:id,
SearchText:value,
frmDate:frmDate,
toDate:toDate
},
success: function(response) {
var obj = Ext.decode(response.responseText);
cityStore.loadData(obj.data);
}
})
}
}
}


})

[suzuki1100nz]

Please edit your post and use code blocks