Unicode Text in JavaScript: How Fancy Text Generators Actually Work

Have you ever wondered how text like this works? 𝐇𝐞𝐥𝐥𝐨 𝐖𝐨𝐫𝐥𝐝 or: 𝓗𝓮𝓵𝓵𝓸 𝓦𝓸𝓻𝓵𝓭 It may look like...