Data attributes is there a limit on the length and how much?
Is there a limitation on the html data attribute? Is it possible to have many data attributes in a tag?
ex. data-a="" data-b="" data-c="" ... data-z=""
And also is there a limit on the duration of the value for each data attribute?
Each HTML element can contain any number of custom data attributes with any value.
Source: w3.org: 3.2.5.9 Embedding custom invisible data with data- * attributes
The length limit was discussed in a previous question linked to Mary Melody above: Is there a limit on the length of HTML attributes?
Most of my concern. They don't have a maximum length when defining a data attribute in JavaScript, just remember to always use lowercase letters[-variable]