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Of course, any number literal is also a quine because of implicit output. …

JavaScript, 90 bytes a="a=%s;a[44]!=')'?x:console.log(a,uneval(''+a))";a[44]!=')'?x:console.log(a,uneval(''+a)) Works in the console of Firefox 48, and should work in any other environment with une …

Cheddar, 56 bytes var a='var a=%s;print a%@"39+a+@"39';print a%@"39+a+@"39 Try it online! I felt like trying to make something in Cheddar today, and this is what appeared...

.+/,x=>{alert(x=x.replace(1,uneval(x)));throw x.slice(7)}) Explanation The idea here was to start with the most easily modifiable JS quine I've found yet: ".replace(/.+/,x=>alert(uneval(x)+x))".replace …

There are several alternative versions of the same length: "iQ ²ª`abc"iQ ²ª`abc quine||"abc" "iQ ²ª$abc"iQ ²ª$abc quine||abc "iQ ²ª{abc"iQ ²ª{abc quine||function(){ ... } "iQ ²ªXabc"iQ ²ªXabc … quine||X.a(...) …

Japt, 9 bytes I've fantasized about a 9-byte Japt quine for years, and now it's finally snapped into place :-D 9îQi"9îQi Test it online! …

JavaScript (Firefox), 44 40 bytes eval(e="alert('eval(e='+uneval(e)+')')") Not sure how I haven't thought of this before; it's basically exactly the same as the standard function quine (f=_=>alert … x.replace(/\\d/g,q)),q='1')".replace(/.+/,x=>alert(q+x+q+x.replace(/\d/g,q)),q='"') Original answer, 118 bytes Now, this certainly isn't a winner, but AFAIK, this is the first ever non-source-reading quine …

JavaScript, 58 54 bytes I present to you the shortest non-source-reading quine in JavaScript: console.log(a="console.log(a=%s,uneval(a))",uneval(a)) How have I not thought of this before? …

Japt, 22 bytes "+Q ³sAJ fU"+Q ³sAJ fU Standard quine framework with a few bytes added to fit this challenge. Truthy = match(es), falsy = null. Try it online! …

JavaScript (ES6), 164 bytes console.log((`+String.fromCharCode(96)).repeat(window.a||(a=3,5)).slice(67,-14)) console.log((`+String.fromCharCode(96)).repeat(window.a||(a=3,5)).slice(67,-14)) Works in …

Japt, 40 bytes Oo("+Q ²pT°?1:2 é4;POo("+Q ²pT°?1:2 é4;P Test it online! Explanation to come.

JavaScript, 50 bytes a="a=%s;console.log(a,uneval(a))";eval(a.slice(5)) Based on the shortest non-source-reading JS quine known to man, but a good 8 bytes shorter. … Prints a="a=%s;console.log(a,uneval(a))";console.log(a,uneval(a)) which is a quine. …

JavaScript, period 9,007,199,254,700,000 Not going to win, but it was fun working with JavaScript on this challenge: a="a=%s;console.log(a,uneval(a),%.0f-1||90071992547e5)";console.log(a,uneval(a),1 …

Japt, 22 bytes "+Q ²£ZgMqB"+Q ²£ZgMqB Test it online! How it works "+Q ²£ZgMqB"+Q ²£ZgMqB // Implicit: B = 11 "+Q ²£ZgMqB" // Take this string. +Q // Append a quo …

there's not a non-source-reading JS answer: a="a=%s;co%s.log(a,uneval(a),`(${'^'}_${'^'})`)";console.log(a,uneval(a),`(${'^'}_${'^'})`) This is based on my non-source-reading answer to Golf you a quine …