YvanDaSilva

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()

YvanDaSilva

Keybase proof

I hereby claim:

• I am yvandasilva on github.
• I am yvanmsilva (https://keybase.io/yvanmsilva) on keybase.
• I have a public key ASB_XNRKLz_GF5ZZ1kk7D3WUSnB37m3YXQzDpkPLJp5Rpwo

To claim this, I am signing this object:

YvanDaSilva

Rails Migration

http://guides.rubyonrails.org/migrations.html

Migrations methods:

• add_column
• add_index
• change_column
• change_table
• create_table
• drop_table