How to Extend the existing classes in Ext.js version 2.3.0
I would look at the documentation here http://dev.sencha.com/deploy/ext-2.3.0/docs/ Then I would look at the Ext singleton object which expose both extend and override methods which should allow you to do what you're after. This is an example of using the extend method from the demo found here http://dev.sencha.com/deploy/yui-ext/examples/grid/array-grid.html The parent...
ExtJs datefield converts invalid date to valid date
javascript,validation,date,extjs,extjs2
There are alternative date formats which ExtJS will try to use if the datefield's value cannot be parsed using the configured format. These formats can be defined using the altFormats property. By default the value is: m/d/Y|n/j/Y|n/j/y|m/j/y|n/d/y|m/j/Y|n/d/Y|m-d-y|m-d-Y|m/d|m-d|md|mdy|mdY|d|Y-m-d which explains why something like 21/17 gets converted to 9/17/2015, as the format...