Superstruct makes it easy to define interfaces and then validate JavaScript data against them. Its type annotation API was inspired by Typescript, Flow, Go, and GraphQL, giving it a familiar and easy ...

This concept isn’t new—in fact, it is the essence of representational state transfer (REST). Instead of converting to a ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Broad form insurance provides coverage for uncommon or higher-risk events, which is why it ...

When you select a value from the first SelectBox, the second SelectBox loads the filtered values. In this example, only cities from the selected state appear in the second SelectBox.