The nice thing about JSX is that it is an embedded DSL. When you use JSX you can take advantage of all of Javascript: variables, loops, conditionals, subroutine

The nice thing about JSX is that it is an embedded DSL. When you use JSX you can take advantage of all of Javascript: variables, loops, conditionals, subroutines, closures, etc. The bad thing about most other template DSLs is that they recreate all of these features from scratch, often in buggy ways. For example, many template DSLs have dynamically scoped variables instead of lexically scoped ones.