Javascript Tester

The tester will evaluate your code and print the result to result section under the editor. The basic idea is you enter snippets of code you want to test with. The last expression will get printed as a result. The last expression should not contain a "return" statement or a variable assignment. It should just be an expression. You can also add additional console.log messages at various points in you code and these will also be shown in the result section on this page.

For example:

const dogs = [
      {age: 10, name: 'Fido'}, 
      {age: 14, name: 'Bowser'},
      {age: 16, name: 'Rusty'}
    ];
  
    dogs.map(dog => dog.name);        
              

console.log(dogs.map(dog => {return {name: dog.name}}));

Great for testing ideas or running simple code snippets...

This editor works entirely in your browser (it uses the Ace embeddable code editor.). Your code is not sent to any server. If you close the browser or tab the current state of the edior is saved. If you don't want you code saved remember to clear the editor before closing. We value Privacy!

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