get id js code example
Example 1: javascript change element id
var element = document.getElementById("oldID");
element.id = "newID";
Example 2: get id of element javascript
var element = document.getElementsByTagName("div")[0];
var id = element.id;
Example 3: js get id value
var element = document.getElementById("YourElementId");
var value_element = document.getElementById("YourElementId").value;