Code Playground — Java & JavaScript

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SkillCoder Playground

JavaScript compiler

15

Learn & practise

Try these challenges

▸Print the numbers 1 to 10 using a for loop
▸Filter even numbers from an array with filter()
▸Reverse a string using split / reverse / join
▸Count how often each word appears (use an object)
▸Write an async function that waits 1s and logs "done"

Tips

• Use console.log(...) to print — objects and arrays are formatted for you.
• await works at the top level, and setTimeout output is shown too.
• prompt() reads one line from the Input box.
• Press Ctrl + Enter to run. Code runs safely inside your browser.

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