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Subtle Hover CSS Inspect Bookmarklet

SubtleHoverInspect Bookmarklet

SubtleHoverInspect

I’ve tested it in Safari4 only. It might work in Firefox 3.5 too.

// SubtleHoverInspect Bookmarklet
// subtlehoverinspect.bookmarklet.js
/*
The MIT License
Copyright (c) 2009 Thomas Aylott (subtlegradient.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
(function(document){
var css = document.createElement('style');
css.appendChild(document.createTextNode('\
*:hover\
{outline:2px solid red;}\
caption:hover,\
thead:hover,\
tbod:hover,\
tfoot:hover,\
tr:hover\
{outline:2px dotted red;}\
td:hover,\
th:hover\
{outline:2px solid red;}\
h1:hover,\
h2:hover,\
h3:hover,\
h4:hover,\
h5:hover,\
h6:hover\
{outline:2px solid green;}\
ol:hover,\
ul:hover\
{outline:2px dotted blue;}\
li:hover\
{outline:2px solid blue;}\
div:hover\
{outline:2px dotted aqua;}\
span:hover\
{outline:2px solid aqua;}\
'));
document.body.appendChild(css);
var id = document.createElement('div');
id.innerHTML = 'Hover stuff!';
id.style.position = 'fixed';
id.style.bottom = '0px';
id.style.left = '0px';
id.style.right = '0px';
id.style.backgroundColor = 'rgba(32,32,32,0.8)';
id.style.color = '#fff';
id.style.textShadow = '0 2px 2px #000';
id.style.padding = '1em';
id.style.fontSize = '12px';
id.style.fontFamily = 'Lucida Grande';
id.style.border = '1px solid #666';
id.style.outline = '1px solid #000';
document.body.appendChild(id);
function ID(el){
return [
String(el.tagName).toLowerCase(),
el.id && ('#' + el.id),
el.className && ('.' + el.className.split(' ').join('.'))
].join('');
};
function getAncestry(el){
var ancestry = [];
do {ancestry.unshift(el);} while((el = el.parentNode));
ancestry.shift();
return ancestry;
};
function getAncestryID(element){
var IDs = [];
getAncestry(element).forEach(function(el){
IDs.push(ID(el));
});
return IDs.join(' > ');
};
document.body.addEventListener('mouseover',function(event){
var el = event.target;
id.innerHTML = getAncestryID(el);
},false);
})(document);

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