TypeScript adds type annotations, generics (<T>) and interfaces on top of JavaScript, lots of colons, angle brackets and pipes.
Symbols you will practice
" & ( ) + , . : ; < = > ? [ ] { | }
How code typing works
- Press Enter at the end of each line. Indentation is filled in automatically, like in a code editor.
- Every symbol must be typed exactly, which is what makes code practice so useful.
- Use the language menu above the test to switch languages.
Other languages
Frequently asked questions
Why practice typing TypeScript code?
Code is full of symbols and exact syntax that normal typing tests skip. Practicing real code builds the reach and accuracy programmers use every day.