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dom3d: a tiny spatial DOM viewer

Installation

Download the latest release and unzip the file then follow the instructions for your browser below.

Universal bookmarklet version Simply prefix this code with `javascript:` and save it as a bookmark on Chrome or Firefox. This is a 1-1 equivalent to the full extension with the default configuration. 
(()=>{let e=t=>[...t.children].reduce((t,n)=>Math.max(t,e(n)),0)+1,t=e(document.body),n=(e,n=0,o=0)=>`hsl(${n}, 75%, ${Math.min(10+e*(1+60/t),90)+o}%)`,o=document.body;o.style.overflow="visible",o.style.transformStyle="preserve-3d",o.style.perspective=1e4;let r=window.innerWidth/2,i=window.innerHeight/2;o.style.perspectiveOrigin=o.style.transformOrigin=`${r}px ${i}px`,function e(t,o,r,i){for(let l=t.childNodes,s=l.length,d=0;d<s;d++){let s=l[d];if(1!==s.nodeType)continue;let f=n(o,190,-5);Object.assign(s.style,{transform:"translateZ(20px)",overflow:"visible",transformStyle:"preserve-3d",backgroundColor:f});let a=r,c=i;s.offsetParent===t&&(a+=t.offsetLeft,c+=t.offsetTop),e(s,o+1,a,c)}}(o,0,0,0),document.addEventListener("mousemove",e=>{let t=180*(1-e.clientY/window.innerHeight)-90,n=180*e.clientX/window.innerWidth-90;o.style.transform=`rotateX(${t}deg) rotateY(${n}deg)`})})();
In Firefox 1. Go to `about:debugging#/runtime/this-firefox` 2. Click "Load Temporary Addon" 3. Select `manifest.json` in the downloaded folder 4. Extension should now be installed, you can find it in the top right extensions menu (puzzle piece icon) and pin it if desired
In Chrome/Chromium browsers 1. Go to `chrome://extensions` 2. Enable "Developer Mode" in the top right 3. Click "Load Unpacked" 4. Select the downloaded folder 5. Extension should now be installed, you can find it in the top right extensions menu (puzzle piece icon) and pin it if desired

Specific Chromium browsers may have additional steps.

  • In Opera, enable "Allow access to search page results"
In Microsoft Edge 1. Go to `edge://extensions` 2. Click "Load Unpacked" 3. Select the downloaded folder. Please use the Chrome version of the extension. 4. Extension should now be installed, you can find it in the top right extensions menu (puzzle piece icon) and pin it if desired

Usage

Click the extension icon to toggle 3D DOM view or right-click for options.

Option Description
Show Sides Toggle visibility of element sides
Show Surfaces Toggle visibility of element surfaces
Randomize Color Apply random colors to elements
Enable Zoom Enable zoom functionality
Rotate with Alt+Drag Rotate view only when dragging and Alt key is pressed
Choose Selectors Select specific elements to apply effects

Development

  1. Run yarn install
  2. Run yarn watch to watch for changes and automatically rebuild the extension.
  3. Load the extension from dist/{browser} following the steps above.

You can use web-ext to reload the extension in Firefox automatically. Chrome requires a manual reload from the chrome://extensions page.

Known Issues

All help in diagnosing and fixing these key issues is welcome! I've linked to an Issue for each of them.