Phase 3: Advanced

Implement a function which transforms a function which takes variadic arguments into a function that can be repeatedly called with any number of arguments

Implement a function that conditionally joins CSS class names together and also handles de-duplication and function values

Implement a class resembling Backbone.Model which allows storing of attributes/values and responding to changes in specific attribute values

Implement a function to filter rows of data matching a specified requirement

Implement a function to get all DOM elements that match a tag hierarchy

Implement a function to construct a table of contents from an HTML document

Implement a function that performs a deep copy of a value, but also handles circular references

Implement a function that converts a JavaScript value into a JSON string