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I use "lua.vm.js" to develop with lua in web client side.

I want to know how can i call a Lua function from js script.

var element = document.getElementById("myBtn")
  element.addEventListener("click", function(){ /*call here Lua function*/ });
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  • 1
    I doubt that you found nothing on the internet. the lua.vm.js webpage evengives an example... Commented Sep 14, 2016 at 19:41
  • 2
    The is a workaround Commented Sep 14, 2016 at 19:53

1 Answer 1

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Method #1
Manipulate JavaScript objects from inside Lua code:

<script src="lua.vm.js"></script>
<script type="text/lua">
    function YourLuaFunction()
       -- your Lua code is here
    end
</script>

<button id="MyBtn">Lua inside</button>
<script type="text/lua">
    js.global.document:getElementById("MyBtn"):addEventListener("click", YourLuaFunction);
</script>

Method #2
Use L.execute(code) to execute Lua code from JS:

Short example:
element.addEventListener("click", function(){ L.execute('YourLuaFunction()'); });

Long example: 

<script src="lua.vm.js"></script>
<script> 
   function executeLua(code) { 
      try { L.execute(code); } catch(e) { alert(e.toString()); } 
   } 
</script>
<script type="text/lua">
      function YourLuaFunction()
         -- your Lua code is here
      end
</script>

<button onclick="executeLua('YourLuaFunction()')">Exec Lua code</button>
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