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# WASM for _Tcell_
You can build _Tcell_ project into a webpage by compiling it slightly differently. This will result in a _Tcell_ project you can embed into another html page, or use as a standalone page.
## Building your project
WASM needs special build flags in order to work. You can build it by executing
```sh
GOOS=js GOARCH=wasm go build -o yourfile.wasm
```
## Additional files
You also need 5 other files in the same directory as the wasm. Four (`tcell.html`, `tcell.js`, `termstyle.css`, and `beep.wav`) are provided in the `webfiles` directory. The last one, `wasm_exec.js`, can be copied from GOROOT into the current directory by executing
```sh
cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" ./
```
In `tcell.js`, you also need to change the constant
```js
const wasmFilePath = "yourfile.wasm"
```
to the file you outputted to when building.
## Displaying your project
### Standalone
You can see the project (with an white background around the terminal) by serving the directory. You can do this using any framework, including another golang project:
```golang
// server.go
package main
import (
"log"
"net/http"
)
func main() {
log.Fatal(http.ListenAndServe(":8080",
http.FileServer(http.Dir("/path/to/dir/to/serve")),
))
}
```
To see the webpage with this example, you can type in `localhost:8080/tcell.html` into your browser while `server.go` is running.
### Embedding
It is recommended to use an iframe if you want to embed the app into a webpage:
```html
<iframe src="tcell.html" title="Tcell app"></iframe>
```
## Other considerations
### Accessing files
`io.Open(filename)` and other related functions for reading file systems do not work; use `http.Get(filename)` instead.
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