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<html><head> <title>Demonstrate ID exists tag checking</title></head><body> <!-- tag doesnt exist yet. Click button it creates a div. second time you click the button console message displayed. --> <button onclick="addDiv()">Add a div with id='tag exist'</button> <script> function addDiv() { if(document.getElementById("tag_exist")) { // do nothing div already exists console.log("Div with id='tag_exists' already"); } else { // append the div to body var div = document.createElement("div"); div.setAttribute("id", "tag_exist") div.innerHTML = "I now exist"; document.body.appendChild(div); } } </script></body></html>
Output
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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. | |
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