I'm quite new to testing in javascript, where I work, we us node.js for our projects.
I finished one of our projects, but I only used manual testing. I need to develop my testing skill and I dont know how to improve it.
I need any testing tool to run my node.js projects, could you please tell me how to improve and learn new testing skills?
Look at Mocha test framework. I think this is the best choose for testing node.js applications at this moment.
If you are using Node to develop a web application you could use one of the headless browsers to test the user interaction (along with ajax) there are PhantomJS and Zombie for example.
Look around in Node Toolbox you'll find many frameworks and utilities to create your tests.
This is a good overview on some of the different unit test tools for Node.js:
3 Quick Tips for Writing Tests in Node.Js (after some rambling)