JavaScript Collection Basic

Business Requirement:

section-1, compare and filter items from two arrays - 4 practices included
section-2, group and count items in an array - 3 practices included
section-3, compare, filter and count items in two arrays - 4 practices included

Practice Challenges:

Use loop and condition statements
Initiate an array
Append element into an array
Access element in an array
Access object properties
Create JavaScript object
Modify object's properties
Fetch specific part of String

Practice Requirements:

Pass all tests
No high order functions
No regular expressions
Commit frequently with readable comment via Git
Coding with keyboard shortcuts

Practice Output:

You can find requirement detail in the test code comments under spec\section-n directory. And you should put your code in the directory main.

For example, the production code of spec/section-1/practice-1-spec.js should be put into main/section-1/practice-1.js.

And then you should run corrresponding practice-[number]-run.html to validate whether your implementations are right or not.

Environment

A Brower like Chrome

How to begin：

Fork this repo
Clone forked repo from your github

Learning Resource