clean
Delete test2.js
Delete test.js
clean
add semicolon
Delete task2.js
Delete task1.js
Merge https://github.com/trey551/js-study into development
Merge branch 'development' of https://github.com/trey551/js-study into development
Merge branch 'development' of https://github.com/trey551/js-study into development
update