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January 28, 2021 13:25
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Elm application index file
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<!DOCTYPE html> | |
<!-- | |
! Excerpted from "Programming Elm", | |
! published by The Pragmatic Bookshelf. | |
! Copyrights apply to this code. It may not be used to create training material, | |
! courses, books, articles, and the like. Contact us if you are in doubt. | |
! We make no guarantees that this code is fit for any purpose. | |
! Visit http://www.pragmaticprogrammer.com/titles/jfelm for more book information. | |
--> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<meta http-equiv="x-ua-compatible" content="ie=edge"> | |
<meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
<title>Picshare</title> | |
<link href="https://programming-elm.com/font-awesome-4.7.0/css/font-awesome.min.css" rel="stylesheet"> | |
<link rel="stylesheet" href="main.css"> | |
</head> | |
<body> | |
<div id="main" class="main"></div> | |
<script src="picshare.js"></script> | |
<script> | |
// 1. create javascript function with variable app | |
(function() { | |
var app = Elm.Picshare.init({ | |
node: document.getElementById('main') | |
}); | |
})(); | |
//2. subscribe to listen port with a function | |
app.ports.listen.subscribe(listen); | |
// 3. javascript subscribe function | |
function listen(url) { | |
var socket = new WebSocket(url); | |
socket.onmessage = function(event) { app.ports.receive.send(event.data); | |
}; | |
} | |
</script> | |
</body> | |
</html> |
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