Chromium Blog
News and developments from the open source browser project
Chrome Extensions: Now with more powerful scripts and improved proxy management.
Mittwoch, 13. Juli 2011
In Chrome 13, we added some new capabilities to content scripts and proxy management.
First, you can now make cross-origin XMLHttpRequest calls with the privileges of the extension directly from your content script. You will no longer need to relay these requests through a background page; this should simplify your code. In some cases, it may even eliminate your need to use a background page. Here’s a
sample extension
which demonstrates the old way a content script could make a cross domain request. As you can see, the extension required a
background page
to route the cross-origin calls through a
chrome.extension.onRequest
listener. Using the new content script cross-origin capabilities, we were able to successfully
rewrite the extension
to completely eliminate the background page requirement. This reduces the memory required to run the extension, and reduces code complexity as well. This also means that Greasemonkey scripts that use
GM_xmlhttpRequest
- such as the classic
Book Burro
- will now work in Chrome.
Second, we improved how
match patterns
work. Until this release you could specify a
matches
array for your content script - the URLs over which it should operate. In Chrome 13 you can now also specify an
exclude_matches
array, where you can indicate the pages in which your content scripts should not work. This should allow more precise targeting of your content script.
Finally, we added support for the
@run-at
command for imported Greasemonkey scripts, so you can control when your script is loaded in the same way you’ve been able to do for content scripts. Running scripts at different points in a page's lifecycle can enable additional functionality. For example, we've written
a script
which runs at "document-start" and lists all of the HTTP resources included in the current page.
In addition to these improvements to scripts, we’ve been working hard to allow extensions to manage Chrome’s proxy settings using different configuration options. With the
Proxy Extension API
, you can now configure proxy settings by choosing from several options including auto detection, the host OS’s system default, PAC scripts or fixed
ProxyRules
.
These new configuration options allow for more fine grained proxy controls, which we invite you to try out. There are already several 3rd party extensions available in the Chrome Web Store that showcase the API and its new capabilities, including
Proxy Anywhere
and
Proxy SwitchyPlus
.
Let us know what you think of these new features and what else you might like to see us do by joining the discussion at chromium-extensions@chromium.org.
Posted by Tessa MacDuff and Mihai Parparita, Software Engineers
Labels
$200K
1
10th birthday
4
abusive ads
1
abusive notifications
2
accessibility
3
ad blockers
1
ad blocking
2
advanced capabilities
1
android
2
anti abuse
1
anti-deception
1
background periodic sync
1
badging
1
benchmarks
1
beta
83
better ads standards
1
billing
1
birthday
4
blink
2
browser
2
browser interoperability
1
bundles
1
capabilities
6
capable web
1
cds
1
cds18
2
cds2018
1
chrome
35
chrome 81
1
chrome 83
2
chrome 84
2
chrome ads
1
chrome apps
5
Chrome dev
1
chrome dev summit
1
chrome dev summit 2018
1
chrome dev summit 2019
1
chrome developer
1
Chrome Developer Center
1
chrome developer summit
1
chrome devtools
1
Chrome extension
1
chrome extensions
3
Chrome Frame
1
Chrome lite
1
Chrome on Android
2
chrome on ios
1
Chrome on Mac
1
Chrome OS
1
chrome privacy
4
chrome releases
1
chrome security
10
chrome web store
32
chromedevtools
1
chromeframe
3
chromeos
4
chromeos.dev
1
chromium
9
cloud print
1
coalition
1
coalition for better ads
1
contact picker
1
content indexing
1
cookies
1
core web vitals
2
csrf
1
css
1
cumulative layout shift
1
custom tabs
1
dart
8
dashboard
1
Data Saver
3
Data saver desktop extension
1
day 2
1
deceptive installation
1
declarative net request api
1
design
2
developer dashboard
1
Developer Program Policy
2
developer website
1
devtools
13
digital event
1
discoverability
1
DNS-over-HTTPS
4
DoH
4
emoji
1
emscriptem
1
enterprise
1
extensions
27
Fast badging
1
faster web
1
features
1
feedback
2
field data
1
first input delay
1
Follow
1
fonts
1
form controls
1
frameworks
1
fugu
2
fund
1
funding
1
gdd
1
google earth
1
google event
1
google io 2019
1
google web developer
1
googlechrome
12
harmful ads
1
html5
11
HTTP/3
1
HTTPS
4
iframes
1
images
1
incognito
1
insecure forms
1
intent to explain
1
ios
1
ios Chrome
1
issue tracker
3
jank
1
javascript
5
lab data
1
labelling
1
largest contentful paint
1
launch
1
lazy-loading
1
lighthouse
2
linux
2
Lite Mode
2
Lite pages
1
loading interventions
1
loading optimizations
1
lock icon
1
long-tail
1
mac
1
manifest v3
2
metrics
2
microsoft edge
1
mixed forms
1
mobile
2
na
1
native client
8
native file system
1
New Features
5
notifications
1
octane
1
open web
4
origin trials
2
pagespeed insights
1
pagespeedinsights
1
passwords
1
payment handler
1
payment request
1
payments
2
performance
20
performance tools
1
permission UI
1
permissions
1
play store
1
portals
3
prefetching
1
privacy
2
privacy sandbox
4
private prefetch proxy
1
profile guided optimization
1
progressive web apps
2
Project Strobe
1
protection
1
pwa
1
QUIC
1
quieter permissions
1
releases
3
removals
1
rlz
1
root program
1
safe browsing
2
Secure DNS
2
security
36
site isolation
1
slow loading
1
sms receiver
1
spam policy
1
spdy
2
spectre
1
speed
4
ssl
2
store listing
1
strobe
2
subscription pages
1
suspicious site reporter extension
1
TCP
1
the fast and the curious
23
TLS
1
tools
1
tracing
1
transparency
1
trusted web activities
1
twa
2
user agent string
1
user data policy
1
v8
6
video
2
wasm
1
web
1
web apps
1
web assembly
2
web developers
1
web intents
1
web packaging
1
web payments
1
web platform
1
web request api
1
web vitals
1
web.dev
1
web.dev live
1
webapi
1
webassembly
1
webaudio
3
webgl
7
webkit
5
WebM
1
webmaster
1
webp
5
webrtc
6
websockets
5
webtiming
1
writable-files
1
yerba beuna center for the arts
1
Archive
2024
Dez.
Aug.
Juni
Mai
Apr.
März
Feb.
2023
Nov.
Okt.
Sept.
Aug.
Juni
Mai
Apr.
Feb.
2022
Dez.
Sept.
Aug.
Juni
Mai
Apr.
März
Feb.
Jan.
2021
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2020
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2019
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2018
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2017
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2016
Dez.
Nov.
Okt.
Sept.
Aug.
Juni
Mai
Apr.
März
Feb.
Jan.
2015
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2014
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2013
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2012
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2011
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2010
Dez.
Nov.
Okt.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2009
Dez.
Nov.
Sept.
Aug.
Juli
Juni
Mai
Apr.
März
Feb.
Jan.
2008
Dez.
Nov.
Okt.
Sept.
Feed
Follow @ChromiumDev
Give us feedback in our
Product Forums
.
