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Editorial Team
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Asked: 2026-05-25T16:51:58+00:00

I building a country selection drop down that, on select, populates a city drop

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I building a country selection drop down that, on select, populates a city drop down.

Due to my code i need to retrieve after country selection the corresponding ISO code and unique country ID, and i would rather not query the DB again for that. So i was thinking stocking this data within the tag, with something like this :

<option rel='US' someother-attribute="1" >United States</option>

Would there be any other more straight forward way to do that ? If not what attributes could i use without impact on my HTML output.

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1 Answer

  1. Editorial Team

    HTML5 data attributes would be the way to go

    Setting the data in the mark-up

    HTML Mark-Up

    <input id="foo" data-code="12376213jkh132kjh3" />

    Reading the value on the client

    JavaScript

    var code = document.getElementById("foo").getAttribute("data-code");

    I do not see the jQuery tag, but just in case it would be

    jQuery

    var code = $("#foo").data("code");
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