data-value attribute in html code example
Example 1: select by data attribute
$('*[data-id="your_id"]');
Example 2: html value attribute
<!-- The value attribute is used to for example fill data to an input -->
<input type="text" value="I was already filled" id="textInput">
<!-- The value can be set or copied using JavaScrpit -->
<script>
var input = document.getElementById('textInput');
var value = input.value;
input.value = "i was changed";
</script>
Example 3: data attribute html
<!-- data-* attritubes can be used on any html element -->
<div data-my-custom-data="true"></div>