In Playwright, start with what a person can identify: use getByRole() and an accessible name for interactive controls, getByLabel() for labeled form fields, and getByText() for non-interactive content. When a page repeats the same control, first scope the locator to the right row or card; then identify the control inside it. This makes the target clearer than relying on a long CSS or XPath selector or an arbitrary position.
Choose a locator that matches the element’s purpose
Playwright describes locators as central to its auto-waiting and retry behavior. A locator expresses how a test identifies an element; the choice also determines which changes the test tolerates and what user-facing behavior it checks. The official guidance is in the Playwright locator guide.
| Page element or testing need | Preferred locator | What it expresses |
|---|---|---|
| Button, link, checkbox, heading, or other semantic element | getByRole(role, { name }) |
The element’s role and accessible name—the way users and assistive technology can identify it. |
| Form field with an associated label | getByLabel(label) |
The field’s label. |
| Visible, non-interactive text such as a status message | getByText(text) |
The text displayed on the page. |
| Field without a label but with a meaningful placeholder | getByPlaceholder(text) |
The placeholder text. |
| Image identified by alternative text | getByAltText(text) |
The image’s alternative text. |
| Element intentionally exposed as a test hook | getByTestId(id) |
An explicit testing contract, using data-testid by default. |
| Element requiring a CSS or XPath selector | locator(selector) |
A selector over the page’s implementation. |
Interactive controls: use role and accessible name
For a control a user acts on, a role locator is a strong default. For example, page.getByRole('button', { name: 'Sign in' }) says both what kind of element the test expects and how it is identified. It can expose a mismatch in role or accessible name that a class-based selector would not catch.
Names can be refined when necessary. For instance, page.getByRole('button', { name: 'Save', exact: true }) requests an exact name match. Use a meaningful name that reflects the control rather than selecting an unrelated piece of text nearby.
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Form fields: prefer labels
Use page.getByLabel('Password') when the input has a label. If it genuinely has no label but does have a useful placeholder, page.getByPlaceholder('Search products') is an option. A placeholder is not a substitute for an accessible label in the application itself; choosing a locator does not repair the page’s accessibility.
Visible content: use text when text is the target
For a non-interactive message or paragraph, use page.getByText('Payment received'). Text matching normalizes whitespace; use the exact-matching option when the test needs the complete text to match. If the target is interactive, prefer its role and accessible name rather than using text alone, which could match a label or other nearby content instead of the control.
Make repeated elements unambiguous by scoping them
A page may contain many identical buttons—for example, an “Add to cart” button in every product card. Identify the right container first, then find the intended control within it. Playwright’s locator composition and filtering are covered in its best-practices guide.
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const product = page.getByRole('listitem').filter({ hasText: 'Product 2' });
const addButton = product.getByRole('button', { name: 'Add to cart' });
await addButton.click();The filter narrows the list items to the one containing “Product 2.” The subsequent role locator is evaluated within that matched container. This is more resilient than clicking the second matching button and communicates which product the test means.
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If the container is better identified by a child element than by text, use a filter with a locator for that child. Keep the scope tied to a meaningful feature of the intended item, and ensure the resulting locator still identifies one target.
Use test IDs when an explicit testing contract is the right choice
getByTestId('checkout-button') is useful when user-facing role, name, or text does not identify the target well, or when the team deliberately wants a stable hook independent of copy. By default, Playwright looks for data-testid; the test ID attribute can be configured.
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This trades some user-facing meaning for an explicit test contract. A test ID can remain stable when copy changes, but it will not verify that the element has the expected accessible role or name. If accessibility semantics are part of what the test should protect, use a role locator or add a separate assertion for those semantics.
Use CSS and XPath selectively
Playwright supports CSS and XPath through page.locator(). They can be appropriate when the target has no useful semantic locator or test hook, or when a test specifically needs to inspect an implementation detail. Avoid selectors that depend on long chains of ancestors, transient classes, or position in the DOM when a role, label, text, or test ID expresses the intended target more directly.
Implementation-coupled selectors can stop matching after a redesign even when the user-facing behavior remains unchanged. The other locators documentation describes alternatives and selector options.
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Make single-target actions unique
Actions such as click() are strict: if a locator matches multiple elements, Playwright reports a strictness error rather than silently choosing one. Fix the locator by refining its role or name, filtering it, or scoping it to the right container.
first(), last(), and nth(index) are available, but they encode a position, not the identity of the intended element. Use them only when order itself is meaningful and stable. If a list changes, an index can still select an element while selecting the wrong item.
Understand what locator actions wait for
For a click, Playwright waits for the target to be uniquely matched and to pass its actionability checks: it must be visible, stable, able to receive events, and enabled. If a required check does not pass before the timeout, the action times out. These checks help synchronize a test with the page; they do not prove that the locator identifies the element the test intended. See Playwright’s auto-waiting and actionability documentation.
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Do not treat an arbitrary delay as a fix for a locator problem. First check whether the intended element exists, whether it is visible and enabled, whether another element obscures it, and whether the locator matches exactly one target. A locator that uniquely identifies the wrong button can still pass actionability checks.
Inspect pages and review generated locators
Playwright’s code generation can inspect a page and propose locators. Its best-practices guidance says it prioritizes role, text, and test IDs. Treat generated code as a starting point: confirm that it describes the intended element, is unique for the action, and remains meaningful if the page contains repeated controls.
Troubleshoot common locator failures
| Symptom | Likely cause | What to do |
|---|---|---|
| Strictness error on a click | The locator matches more than one element. | Refine the role or accessible name, filter by identifying text or a child locator, or scope to the correct row or card. |
| Action times out | A required actionability check did not pass, or the target is absent or incorrectly identified. | Check presence, uniqueness, visibility, stability, whether the target receives events, and whether it is enabled. Fix the underlying state or locator rather than adding an arbitrary wait. |
| Locator breaks after a redesign | The selector depends on a class, ancestry, or other implementation detail that changed. | Prefer a user-facing role, label, or text when appropriate, or add an intentional test ID contract. |
| A text locator finds the wrong element | The text occurs outside the intended control or in more than one place. | For an interactive target, use its role and accessible name; if controls repeat, scope to the right container. |
nth() selects the wrong list item |
The list order changed while the positional selector remained valid. | Identify the item by its content or stable test contract, then locate the control within it. |
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Frequently Asked Questions
Can I change Playwright’s default test ID attribute?
Yes. Playwright uses data-testid by default, and the test ID attribute can be configured.
Does a passing click mean my locator chose the right element?
No. Actionability checks establish that the matched target is ready for the action; the test still needs a locator that identifies the intended element.
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