In last month's column, I walked through the two syntaxes for defining "function datatypes" in TypeScript. I showed the JavaScript-like syntax, which looks like this: var FirstName: (cust: Customer) ...

In mathematics, a "well-defined" function is one where there is only 1 output for a given input (as a side note, you can have only single input functions, and still semantically get multiple ...

The JavaScript is still working behind the scenes. Essentially, we get a more granular HTML syntax, which can just load segments instead of whole pages, and can submit Ajax requests.