https://www.syncfusion.com/feedback/46120/provide-notcontain-notendwith-notstartwith-support-for-querybuilder-default
Provide notcontain, notendwith, notstartwith support for QueryBuilder Default operator in...
Check out the feature request in JavaScript - Query Builder - Provide notcontain, notendwith, notstartwith support for QueryBuilder Default operator.
support forprovidequerybuilderdefaultoperator