#Usage Examples

Here are some examples of Lua code that will run on the browser using the luavmjs virtual machine:

##Hello World

<?lua@client

-- Log it to the console
print('hello' .. ' ' .. 'world!')

?>

##Manipulation of the DOM

<div id="app"></div>
<?lua@client

local app = js.global.document:getElementById('app')
print(app.textContent)
app.textContent = 'lets go'

js.global.window:alert('This code was written in Lua')

?>

##Run JS from Lua

<?lua@client

print(js.global:eval('[0,1,2,3,4,5][3]'))

?>

##Callbacks into Lua

<?lua@client

local window = js.global -- global object in JS is the window
window:setTimeout(function() print('hello from lua callback') end, 2500)

?>

##Call constructors (global, or as properties of other objects)

<?lua@client

print("i made an ArrayBuffer of size " .. js.new(js.global.ArrayBuffer, 20).byteLength)

?>

##Exporting Lua modules to the browser

Not possible yet using this VM.

##Script Tag Support

<?lua@client?><!-- Serve the VM first-->
<script type="text/lua">
js.window:alert('Hello World from Lua!')
</script>

If you use this method, the Lua scripts will run after the page has loaded. For immediate execution, use the <?lua@client tag as explained above.

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