weblog is a crate that defines a set of macros for calling console.log()
, console.error()
and other members of the browser's console API when targeting Wasm.
web-sys
and stdweb
backends with an identical public APIA simple example.
rust
console_log!("Hello world!");
Passing multiple arguments is fine too.
rust
console_log!("Foo", "bar", "baz");
All of the common browser log levels are supported.
rust
console_debug!("Just testing...");
console_warn!("...but then...");
console_error!("...something bad happened.");
It's possible to send more than just strings or &str
s:
rust
console_log!(
"&str",
"string".to_string(),
1,
2.0,
3f32,
true,
false
);
When using web-sys
crate the macros accept any value that implements the Into<JsValue>
trait. See JsValue for
more details.
No stringification is performed on the Rust side - so objects will be fully introspectable in the browser's console!
```toml
weblog = "0.2"
weblog = { version = "0.2", default-features = false, features = ["std_web"] } ```
See the documentation for usage examples.
The crate currently exposes the following macros:
console_clear!
console_debug!
console_dir!
console_dirxml!
console_error!
console_info!
console_log!
console_trace!
console_warn!
Licensed under MIT or Apache-2.