Check documentation for the latest version 6.0 of dhtmlxSuite onValidationError DHTMLX Docs

onValidationError

fires after validation error before data sending

void onValidationError(string|number id,object details){ ... };

Parameters

idstring|numberid of the item for which error occurs
detailsobjecterror details

Example

dp.attachEvent("onValidationError", function(id, details){
    //custom code here
});

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