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How to read array of values from browser DOM using jQuery, or in Node.js using Cheerio

(2019-03-11T22:00:00.000Z) Typically with jQuery or Cheerio we read or write strings and numbers to/from the DOM, but what if we must use objects or arrays of data? The jQuery documentation mentions data-* attributes, but the documentation is not entirely clear how to use this for reading/writing objects or arrays to/from the DOM.

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