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<html><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title>JS Bin</title></head><body></body></html>var a;if(a) { console.log('Hello World!')}//不输出if(true) { console.log('Hello World!')}//输出结果：Hello World!if(false) { console.log('Hello World!')}//不输出if(0) { console.log('Hello World!')}//不输出if(+0) { console.log('Hello World!')}//不输出if(123) { console.log('Hello World!')}//输出结果：Hello World!if(NaN) { console.log('Hello World!')}//不输出if('') { console.log('Hello World!')}//不输出if(' ') { console.log('Hello World!')}//输出结果：Hello World!if('123') { console.log('Hello World!')}//输出结果：Hello World!if('abc') { console.log('Hello World!')}//输出结果：Hello World!if([0]) { console.log('Hello World!')}//输出结果：Hello World!if([0, 1, 2]) { console.log('Hello World!')}//输出结果：Hello World!
Output
300px
300px
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. | |
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