Edit: Oops didn't notice you were a developer. I think comparing to complex combinations of ' and "" is a bit of a straw man, as JavaScript developers use temp

Edit: Oops didn't notice you were a developer. I think comparing to complex combinations of ' and "" is a bit of a straw man, as JavaScript developers use templating languages like Handlebars/Mustache so that really isn't an issue! I see why you're doing it the way you are for the static HTML checking though!