Difference between two element styles with Google Chrome

Question

I use Google Chrome developer tools and I am constantly inspecting one element against another back and forth to find out what may be causing a particular styling issue.

It would be nice to compare the differences in style between element 1 and element 2.

Can this be done with chrome currently or via some workaround? Is there a tool out there that can do what I am looking for?

Current example of style difference is that I have an inline H4 next to a A where the A is appearing higher in vertical alignment. I am not seeking a solution in this question as I will sort it out.

Answer 1

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Update: As a result of this discussion, the "CSS Diff" Chrome extension was created.

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Great question and cool idea for extension!

Proof of concept

As a proof of concept, we can do a small trick here and avoid creating extension. Chrome keeps elements you select via 'inspect element' button in variables. Last selected element in $0, one before that in $1 etc. Basing on this, I've created a small snippet that compares last two inspected elements:

(function(a,b){         var aComputed = getComputedStyle(a);     var bComputed = getComputedStyle(b);      console.log('------------------------------------------');     console.log('You are comparing: ');     console.log('A:', a);     console.log('B:', b);     console.log('------------------------------------------');      for(var aname in aComputed) {         var avalue = aComputed[aname];         var bvalue = bComputed[aname];          if( aname === 'length' || aname === 'cssText' || typeof avalue === "function" ) {             continue;         }          if( avalue !== bvalue ) {             console.warn('Attribute ' + aname + ' differs: ');             console.log('A:', avalue);             console.log('B:', bvalue);         }     }      console.log('------------------------------------------'); })($0,$1); 

How to use it?

Inspect two elements you want to compare, one after another, and paste the code above to console.

Result