class: ConsoleMessage

• since: v1.8

[ConsoleMessage] objects are dispatched by page via the [event: Page.console] event. For each console message logged in the page there will be corresponding event in the Playwright context.

// Listen for all console logs
page.on('console', msg => console.log(msg.text()));

// Listen for all console events and handle errors
page.on('console', msg => {
  if (msg.type() === 'error')
    console.log(`Error text: "${msg.text()}"`);
});

// Get the next console log
const msgPromise = page.waitForEvent('console');
await page.evaluate(() => {
  console.log('hello', 42, { foo: 'bar' });  // Issue console.log inside the page
});
const msg = await msgPromise;

// Deconstruct console log arguments
await msg.args()[0].jsonValue(); // hello
await msg.args()[1].jsonValue(); // 42

// Listen for all console messages and print them to the standard output.
page.onConsoleMessage(msg -> System.out.println(msg.text()));

// Listen for all console messages and print errors to the standard output.
page.onConsoleMessage(msg -> {
  if ("error".equals(msg.type()))
    System.out.println("Error text: " + msg.text());
});

// Get the next console message
ConsoleMessage msg = page.waitForConsoleMessage(() -> {
  // Issue console.log inside the page
  page.evaluate("console.log('hello', 42, { foo: 'bar' });");
});

// Deconstruct console.log arguments
msg.args().get(0).jsonValue(); // hello
msg.args().get(1).jsonValue(); // 42

# Listen for all console logs
page.on("console", lambda msg: print(msg.text))

# Listen for all console events and handle errors
page.on("console", lambda msg: print(f"error: {msg.text}") if msg.type == "error" else None)

# Get the next console log
async with page.expect_console_message() as msg_info:
    # Issue console.log inside the page
    await page.evaluate("console.log('hello', 42, { foo: 'bar' })")
msg = await msg_info.value

# Deconstruct print arguments
await msg.args[0].json_value() # hello
await msg.args[1].json_value() # 42

# Listen for all console logs
page.on("console", lambda msg: print(msg.text))

# Listen for all console events and handle errors
page.on("console", lambda msg: print(f"error: {msg.text}") if msg.type == "error" else None)

# Get the next console log
with page.expect_console_message() as msg_info:
    # Issue console.log inside the page
    page.evaluate("console.log('hello', 42, { foo: 'bar' })")
msg = msg_info.value

# Deconstruct print arguments
msg.args[0].json_value() # hello
msg.args[1].json_value() # 42

// Listen for all console messages and print them to the standard output.
page.Console += (_, msg) => Console.WriteLine(msg.Text);

// Listen for all console messages and print errors to the standard output.
page.Console += (_, msg) =>
{
    if ("error".Equals(msg.Type))
        Console.WriteLine("Error text: " + msg.Text);
};

// Get the next console message
var waitForMessageTask = page.WaitForConsoleMessageAsync();
await page.EvaluateAsync("console.log('hello', 42, { foo: 'bar' });");
var message = await waitForMessageTask;
// Deconstruct console.log arguments
await message.Args.ElementAt(0).JsonValueAsync<string>(); // hello
await message.Args.ElementAt(1).JsonValueAsync<int>(); // 42

method: ConsoleMessage.args

• since: v1.8

• returns: <[Array]<[JSHandle]>>

List of arguments passed to a console function call. See also [event: Page.console].

method: ConsoleMessage.location

• since: v1.8
• langs: js, python

• returns: <[Object]>
  • url <[string]> URL of the resource.
  • line <[int]> 0-based line number in the resource.
  • column <[int]> 0-based column number in the resource.
  • lineNumber <[int]> 0-based line number in the resource. Deprecated, use line instead.
  • columnNumber <[int]> 0-based column number in the resource. Deprecated, use column instead.

method: ConsoleMessage.location

• since: v1.8
• langs: csharp, java

• returns: <[string]>

URL of the resource followed by 0-based line and column numbers in the resource formatted as URL:line:column.

method: ConsoleMessage.page

• since: v1.34

• returns: <[null]|[Page]>

The page that produced this console message, if any.

method: ConsoleMessage.text

• since: v1.8

• returns: <[string]>

The text of the console message.

method: ConsoleMessage.timestamp

• since: v1.59

• returns: <[float]>

The timestamp of the console message in milliseconds since the Unix epoch.

method: ConsoleMessage.type

• since: v1.8
• langs: js, python

• returns: <[ConsoleMessageType]<"log"|"debug"|"info"|"error"|"warning"|"dir"|"dirxml"|"table"|"trace"|"clear"|"startGroup"|"startGroupCollapsed"|"endGroup"|"assert"|"profile"|"profileEnd"|"count"|"time"|"timeEnd">>

method: ConsoleMessage.type

• since: v1.8
• langs: csharp, java

• returns: <[string]>

One of the following values: 'log', 'debug', 'info', 'error', 'warning', 'dir', 'dirxml', 'table', 'trace', 'clear', 'startGroup', 'startGroupCollapsed', 'endGroup', 'assert', 'profile', 'profileEnd', 'count', 'timeEnd'.

method: ConsoleMessage.worker

• since: v1.57

• returns: <[null]|[Worker]>

The web worker or service worker that produced this console message, if any. Note that console messages from web workers also have non-null [method: ConsoleMessage.page].

Source: docs/src/api/class-consolemessage.md