1. What is array in JavaSript? -> array.js
2. How to declare array? -> array-declaration.js
3. How much array elements store there in array? -> array-length.js
4. Array index number -> array-index.js
5. Set element by index number -> element-change-by-index-number.js
6. Find index of an element -> indexOf.js
7. How to add element in the first positon in an arrray? -> unshift.js
8. How to add element in the last positon in an arrray? -> push.js
9. How to remove element in the first position from an array? - shift.js
10. How to remove element in the last position from an array? - pop.js

Reference: [1]: http://web.programming-hero.com/ "Programming-Hero"