paulirish

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.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

cnruby

$ curl -O ftp://ftp.gnu.org/gnu/ncurses/ncurses-5.9.tar.gz
$ tar -xzvf ncurses-5.9.tar.gz
$ cd ./ncurses-5.9
$ ./configure --prefix=/usr/local \
  --without-cxx --without-cxx-binding --without-ada --without-progs --without-curses-h \
  --with-shared --without-debug \
  --enable-widec --enable-const --enable-ext-colors --enable-sigwinch --enable-wgetch-events \
&& make
$ sudo make install