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JavaScript

Concatenation of single Quotes inside Double Quotes

Could Some one Explain to me how this concatenation works it is very confusing

<div> <img src="img/' + planet.name + '.jpg" alt="' + planet.name + '">' + </div>

1 Answer

Steven Parker
Steven Parker
220,476 Points

I would not expect that to "work". For one thing, it's incomplete. There's no statement there, only what looks like part of a concatenated string. Also, the single quotes are unbalanced — there's an odd number of them.

But it looks like the idea was to enclose the string bits in single quotes, and some of those bits have double quotes inside them. For example, in this complete statement with a modified version of this string, you can clearly see by the syntax coloring which parts are literal strings:

var sample = '<div><img src="img/' + planet.name + '.jpg" alt="' + planet.name + '"></div>';