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<html><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title>JS Bin</title></head><body> <div>鼠标在画布中的当前位置 <span id="position"></span></div> <canvas id="canvas" width=370></canvas> <script> canvas.onmousemove = function(e){ position.innerText = 'x:'+e.offsetX+' y:'+e.offsetY} </script></body></html>body { margin: 0; padding: 0;}#canvas { background-color: antiquewhite;}var canvas = document.getElementById('canvas');var ctx = canvas.getContext('2d');ctx.fillStyle = 'orange';ctx.strokeStyle = 'red';ctx.lineWidth = 2;/* 绘制矩形 */ctx.fillRect(25,25,100,100);ctx.clearRect(45,45,60,60);ctx.strokeRect(50,50,50,50);/* 绘制路径 */ctx.beginPath();ctx.moveTo(160,75);ctx.lineTo(220,125);ctx.lineTo(220,25);ctx.closePath();ctx.stroke();ctx.fill();/* 绘制圆形 */ctx.beginPath();ctx.arc(300, 75, 50, 6, 2*Math.PI, true);ctx.fill();ctx.stroke();
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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