nl_tokens: Checks whether the value of the field has changed since the last time it was checked . If the value has changed it :
pl_tokens: function ( ) { if ( ! this . suspendCheckChange ) { var me = this , newVal = me . getValue ( ) , oldVal = me . lastValue ; if ( ! me . isEqual ( newVal , oldVal ) && ! me . isDestroyed ) { me . lastValue = newVal ; me . fireEvent ( 'change' , <mask> , newVal , oldVal ) ; me . onChange ( newVal , oldVal ) ; } } }