<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
</head>
<body>
<input type="text" />
<br>
<img/>
<script>
function url_to_vid(url) {
let vid = null;
try{
if(url.includes("youtu.be/")){
// get the part after youtu.be/ and before '?' (if applicable)
let chunks = url.split('youtu.be/');
let chunks2 = chunks[1].split('?');
vid = chunks2[0]; // note: if there's no '?' we still get an array with 1 item, namely video id
} else if (url.includes("youtube")) {
let chunks = url.split('v=');
let chunks2 = chunks[1].split('&');
vid = chunks2[0]; // ditto
} else {
alert('unknown url format');
}
} catch (e){
alert('error: ' + e);
}
return vid;
}
function vid_to_thumb_url(vid) {
return `https://img.youtube.com/vi/${vid}/sddefault.jpg`;
}
function update(e) {
let url = e.target.value;
let vid = url_to_vid(url);
console.log(vid)
let thumb_url = vid_to_thumb_url(vid);
console.log(thumb_url )
document.querySelector('img').src = thumb_url;
}
document.querySelector('input').addEventListener('input', update);
</script>
</body>
</html>
Output
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Dismiss xKeyboard 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. |