This page runs a series of a examples using promises in ECMAScript 6 without any transpilation. This means your browser must support ES6 promise syntax in order to successfully run the code. Open up your debugging console to view the output.
Browser support: All JavaScript engines
For more information on how promises work and their level of support, check out the Promises article that is part of the Learning ES6 series.
Source code | Babel example | Traceur example | Index of examples