jesperorb

PHP Form submitting

If we have the following structure in our application:

• 📁 application_folder_name
  • 📄 index.php
  • 📄 handle_form.php
  • 📄 main.js

And we fill our index.php with the following content just to get a basic website with a form working. You should be able to run this through a php-server of your choice.

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