Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

k=n=prompt(f=[a=b=1])|0;
while((b=a+(a=b))<n)f.push(b);
for(i=f.length,g=[];i--;)if(f[i]<=k)g.push(f[i]),k-=f[i];
alert(n+': '+(n?g.join('+'):0));

// version 1 golfed
//k=n=prompt(f=[a=b=1])|0;while((b=a+(a=b))<n)f.push(b);for(i=f.length,g=[];i--;)if(f[i]<=k)g.push(f[i]),k-=f[i];alert(n+': '+(n?g.join('+'):0))

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JSFiddle - React, Tailwind, and code Playground

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