https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr .substr seems to be deprecated? And never been intended to be part of EcmaScript? -----Ursprüngliche Nachricht----- Von:Zhihao Yuan <zy_at_[hidden]> As a prior art, JavaScript String provides both .substr and .substring methods, where the prior accepts (start, count) and the latter accepts (start, end).