HTML5 WEB WORKERS

WEB WORKERS

Web Workers are desinged to bring multithreading to JavaScript.

They are isolated threads that can concurrently perform work.

Why use Web Workers:

Background Tasks
Parallelism
Synchronization
Maximize the potential of available hardware
Isolation and segregation of responsibilities

WEB WORKERS LIMITATIONS

As with any other language feature that uses threads or processes there are limitations.

Most of the limitations come from UI elements.

You can `not` use Web Workers when manipulating:

DOM
Window
Parent
Document

TYPES OF WEB WORKERS

There are two types of Web Workers specifically designed for different tasks.

Types:

Dedicated Workers
Shared Workers

Tasks:

Background work
IPC

WEB WORKER CANDY

Dynamic External Script Loading
SubWorkers
Blob Manipulation
Inline Workers using Blobs