# Enforce valid `browser.actions()` usage Ensure `perform()` is called on `browser.actions()` chain of actions. ## Rule details This rule triggers an error if there is no `perform()` at the end of the `browser.actions()` chain. Note that there has to be at least one applied action to trigger the rule. In other words, `var actions = browser.actions();` is considered valid since it is quite a common pattern. :thumbsdown: The following patterns are considered errors: ```js browser.actions().click(); browser.actions().mouseMove(elm); ``` :thumbsup: The following patterns are not errors: ```js var actions = browser.actions(); browser.actions().click(elm).perform(); browser.actions().mouseMove(elm).click().perform(); browser.actions().dragAndDrop(elm1, elm2).perform(); ```