A button click in Selenium has to happen after the browser exposes the element as visible and enabled. Clicking too early can produce no click, an intercepted click, or a stale element error after the page redraws, so the test should wait for the exact control and verify the page state caused by the click.

In Python, the usual flow is a locator tuple, WebDriverWait, EC.element_to_be_clickable(), and click() on the returned WebElement. A locator-based wait keeps the lookup close to the action, which matters when JavaScript enables or replaces the button after the initial page load.

Use this pattern for normal page buttons, links, and controls that a user could click. If an overlay covers the button, the button stays disabled, a native alert is open, or the button lives inside an iframe, fix that browser state or switch context before clicking instead of hiding the timing problem behind time.sleep() or a JavaScript click.

Related: How to use explicit waits in Selenium
Related: How to troubleshoot stale element errors in Selenium
Related: How to run a headless browser in Selenium

Steps to click a button with Selenium:

  1. Create selenium-click-button.py with a local button page and an explicit clickable wait.
    selenium-click-button.py
    from pathlib import Path
from tempfile import TemporaryDirectory
import shutil
 
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait
 
 
HTML = """<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Selenium button click demo</title>
    <script>
      window.addEventListener("DOMContentLoaded", () => {
        const button = document.querySelector("#place-order");
        const status = document.querySelector("#status");
 
        setTimeout(() => {
          button.disabled = false;
          status.textContent = "ready";
        }, 300);
 
        button.addEventListener("click", () => {
          status.textContent = "clicked";
          button.dataset.clicked = "true";
        });
      });
    </script>
  </head>
  <body>
    <button id="place-order" disabled>Place order</button>
    <p id="status">waiting</p>
  </body>
</html>
"""
 
 
options = Options()
options.add_argument("--headless=new")
options.add_argument("--window-size=1280,720")
 
for browser_name in ("google-chrome", "chromium", "chromium-browser"):
    browser_path = shutil.which(browser_name)
    if browser_path:
        options.binary_location = browser_path
        break
 
driver_path = shutil.which("chromedriver")
service = Service(driver_path) if driver_path else Service()
 
with TemporaryDirectory() as tmpdir:
    page = Path(tmpdir) / "button-click.html"
    page.write_text(HTML, encoding="utf-8")
 
    driver = webdriver.Chrome(service=service, options=options)
    try:
        driver.get(page.as_uri())
 
        wait = WebDriverWait(driver, 10)
        button = wait.until(EC.element_to_be_clickable((By.ID, "place-order")))
        button_text = button.text
        button.click()
 
        wait.until(EC.text_to_be_present_in_element((By.ID, "status"), "clicked"))
        status = driver.find_element(By.ID, "status").text
 
        print(f"title: {driver.title}")
        print(f"button_text: {button_text}")
        print(f"status: {status}")
    finally:
        driver.quit()

    The demo waits for a disabled button to become clickable, clicks it, and checks the page text changed after the click.

  2. Run the script to confirm the button click changes the page state. 
    $ python3 selenium-click-button.py
title: Selenium button click demo
button_text: Place order
status: clicked
  3. Use a stable locator for the real application button. 
    checkout_button = wait.until(
    EC.element_to_be_clickable((By.CSS_SELECTOR, "button[data-testid='checkout']"))
)
checkout_button.click()

    Prefer a stable id or test attribute when the application provides one. Button text and generated CSS class names often change before the click behavior changes.

  4. Verify the page state that the click should create. 
    wait.until(
    EC.visibility_of_element_located((By.CSS_SELECTOR, "[data-testid='order-confirmation']"))
)

    A successful click() call only proves Selenium sent the action. The follow-up wait proves the application reacted to it.

  5. Relocate the button before clicking again after a redraw or navigation. 
    button = wait.until(EC.element_to_be_clickable((By.ID, "place-order")))
button.click()

    A saved WebElement can become stale after JavaScript replaces the node. Keep the locator and wait for a fresh element before the next click.
    Related: How to troubleshoot stale element errors in Selenium

  6. Remove the demo script after moving the pattern into the real test. 
    $ rm selenium-click-button.py