<html lang="en">
<head>
<title>8x8 Matrix: 8-Bit Value Generator</title>
<style>
.led {
width: 25px;
height: 25px;
color: black;
background-color: white;
border: 1px solid black;
margin: 0 2px 2px 0;
}
.led::after {
content: "0";
}
.active {
color: white;
background-color: black;
}
.active::after {
content: "1";
}
#container {
width: 232px;
}
#output {
width: 225px;
height: 50px;
}
body {
margin-left: 10px;
}
</style>
</head>
<body>
<div id="container"></div>
<textarea id="output"></textarea>
<script>
var memory = new Array(64);
var buttons = [];
var button = document.createElement("button");
var container = document.getElementById("container");
var output = document.getElementById("output");
button.classList.add("led");
for (var i = 0; i < 8; i++) {
buttons.push(container.appendChild(button.cloneNode()));
}
function asBinary() {
return buttons.map(function(button) {
return +button.classList.contains("active");
}).join("");
}
function padLeft(nr, n, str){
return Array(n - String(nr).length + 1).join(str || "0") + nr;
}
function bin2hex(bin) {
return parseInt(bin, 2).toString(16);
}
container.addEventListener("click", function(event) {
if (event.target.nodeName === "DIV") {
return;
}
event.target.classList.toggle("active");
var bin = asBinary();
var hex = "0x" + padLeft(bin2hex(bin), 2);
var dec = parseInt(bin, 2);
output.value = [hex, dec].join("\n");
}, false);
</script>
</body>
</html>
Output
You can jump to the latest bin by adding /latest
to your URL
Keyboard Shortcuts
Shortcut | Action |
---|---|
ctrl + [num] | Toggle nth panel |
ctrl + 0 | Close focused panel |
ctrl + enter | Re-render output. If console visible: run JS in console |
Ctrl + l | Clear the console |
ctrl + / | Toggle comment on selected lines |
ctrl + ] | Indents selected lines |
ctrl + [ | Unindents selected lines |
tab | Code complete & Emmet expand |
ctrl + shift + L | Beautify code in active panel |
ctrl + s | Save & lock current Bin from further changes |
ctrl + shift + s | Open the share options |
ctrl + y | Archive Bin |
Complete list of JS Bin shortcuts |
JS Bin URLs
URL | Action |
---|---|
/ | Show the full rendered output. This content will update in real time as it's updated from the /edit url. |
/edit | Edit the current bin |
/watch | Follow a Code Casting session |
/embed | Create an embeddable version of the bin |
/latest | Load the very latest bin (/latest goes in place of the revision) |
/[username]/last | View the last edited bin for this user |
/[username]/last/edit | Edit the last edited bin for this user |
/[username]/last/watch | Follow the Code Casting session for the latest bin for this user |
/quiet | Remove analytics and edit button from rendered output |
.js | Load only the JavaScript for a bin |
.css | Load only the CSS for a bin |
Except for username prefixed urls, the url may start with http://jsbin.com/abc and the url fragments can be added to the url to view it differently. |