diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0cc9169a..ff58bed3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
## [Unreleased](https://github.com/rubycdp/ferrum/compare/v0.14...main) ##
### Added
+- `Ferrum::Page#disable_javascript` disables the JavaScript from the HTML source
### Changed
diff --git a/README.md b/README.md
index 0f645862..8411cb66 100644
--- a/README.md
+++ b/README.md
@@ -909,6 +909,19 @@ browser.evaluate("window.__injected") # => 42
```
+## Emulation
+
+#### disable_javascript
+
+Disables Javascripts from the loaded HTML source.
+You can still evaluate JavaScript with `evaluate` or `execute`.
+Returns nothing.
+
+```ruby
+browser.disable_javascript
+```
+
+
## Frames
#### frames : `Array[Frame] | []`
diff --git a/lib/ferrum/browser.rb b/lib/ferrum/browser.rb
index 8a4f3621..89cfa65d 100644
--- a/lib/ferrum/browser.rb
+++ b/lib/ferrum/browser.rb
@@ -27,7 +27,8 @@ class Browser
evaluate evaluate_on evaluate_async execute evaluate_func
add_script_tag add_style_tag bypass_csp
on position position=
- playback_rate playback_rate=] => :page
+ playback_rate playback_rate=
+ disable_javascript] => :page
delegate %i[default_user_agent] => :process
attr_reader :client, :process, :contexts, :options, :window_size, :base_url
diff --git a/lib/ferrum/page.rb b/lib/ferrum/page.rb
index de82e690..08d4d3c5 100644
--- a/lib/ferrum/page.rb
+++ b/lib/ferrum/page.rb
@@ -149,6 +149,15 @@ def resize(width: nil, height: nil, fullscreen: false)
mobile: false)
end
+ #
+ # Disables JavaScript execution from the HTML source for the page.
+ #
+ # This doesn't prevent users evaluate JavaScript with Ferrum.
+ #
+ def disable_javascript
+ command("Emulation.setScriptExecutionDisabled", value: true)
+ end
+
#
# The current position of the browser window.
#
diff --git a/spec/page_spec.rb b/spec/page_spec.rb
index 7db4e498..ecddd314 100644
--- a/spec/page_spec.rb
+++ b/spec/page_spec.rb
@@ -170,4 +170,20 @@
expect { page.go_to("/ferrum/really_slow") }.to raise_error(Ferrum::PendingConnectionsError)
end
end
+
+ describe "#disable_javascript" do
+ it "disables javascripts on page" do
+ page.disable_javascript
+
+ expect { page.go_to("/ferrum/js_error") }.not_to raise_error
+ end
+
+ it "allows javascript evaluation from Ferrum" do
+ page.disable_javascript
+
+ page.evaluate("document.body.innerHTML = 'text
'")
+
+ expect(page.main_frame.body).to eq("text
")
+ end
+ end
end