Struct playwright::api::selectors::Selectors [−][src]
pub struct Selectors { /* fields omitted */ }
Expand description
Selectors can be used to install custom selector engines.
Implementations
impl Selectors
[src]
impl Selectors
[src]pub async fn register(
&self,
name: &str,
script: &str,
content_script: bool
) -> Result<(), Arc<Error>>
[src]
pub async fn register(
&self,
name: &str,
script: &str,
content_script: bool
) -> Result<(), Arc<Error>>
[src]An example of registering selector engine that queries elements based on a tag name:
const { selectors, firefox } = require('playwright'); // Or 'chromium' or 'webkit'.
(async () => {
// Must be a function that evaluates to a selector engine instance.
const createTagNameEngine = () => ({
// Returns the first element matching given selector in the root's subtree.
query(root, selector) {
return root.querySelector(selector);
},
// Returns all elements matching given selector in the root's subtree.
queryAll(root, selector) {
return Array.from(root.querySelectorAll(selector));
}
});
// Register the engine. Selectors will be prefixed with "tag=".
await selectors.register('tag', createTagNameEngine);
const browser = await firefox.launch();
const page = await browser.newPage();
await page.setContent(`<div><button>Click me</button></div>`);
// Use the selector prefixed with its name.
const button = await page.$('tag=button');
// Combine it with other selector engines.
await page.click('tag=div >> text="Click me"');
// Can use it in any methods supporting selectors.
const buttonCount = await page.$$eval('tag=button', buttons => buttons.length);
await browser.close();
})();
Args
name
Name that is used in selectors as a prefix, e.g. {name: 'foo'}
enables foo=myselectorbody
selectors.
May only contain [a-zA-Z0-9_]
characters.
script
Script that evaluates to a selector engine instance.
content_script
Whether to run this selector engine in isolated JavaScript environment. This environment
has access to the same DOM, but not any JavaScript objects from the frame’s scripts.
Defaults to false
. Note that running as a content script is not
guaranteed when this engine is used together with other registered engines.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Selectors
impl Send for Selectors
impl Sync for Selectors
impl Unpin for Selectors
impl UnwindSafe for Selectors
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
[src]
pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
[src]
pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
[src]
pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more