Get ID of Clicked Element using JavaScript

In this tutorial we will see How To Get ID of Clicked Element using JavaScript. The JavaScript this object is used which contain all properties of selected element.

HTML Code

HTML Code is given below, This code contains button elements, Whichever button is clicked, it will fire the getId() function and this object is passed to it.

<!DOCTYPE html>
<html>
<head>
    <title>Get ID of Clicked Element using JavaScript</title>
</head>
<body>
    <button id='1' onclick="getId(this)">Button 1</button>
    <button id='2' onclick="getId(this)">Button 2</button>
</body>
</html>

JavaScript Code

JavaScript Code is given below, In this code the JavaScript this object refers to the clicked button element.

The JavaScript function will take the selected button element as object inside the variable named 'btn'. This variable will be used as object to read id of the clicked button.

HTML Dom Id property is used to read the id, HTML dom id property of object sets or returns the id of html element.

The Id of clicked button is then displayed using alert method.

<script>
function getId(btn)
{
alert(btn.id);
}
</script>

Demo

Video Tutorial

Watch video tutorial on How To Get ID of Clicked Element using JavaScript.

Also Read Get ID of Clicked Element using JQuery.

Get Heading Text using JavaScript Current Date in mm/dd/yyyy Format JavaScript Current Date in dd/mm/yyyy Format in JavaScript JavaScript Current Date in yyyy-mm-dd Format JavaScript Get Date Difference in Hours JavaScript Get Date Difference in Minutes JavaScript Get Date Difference in Seconds Get Last Character of String with JavaScript Trigger Button Click On Page Load JavaScript Get id Of Child Element JavaScript Get Id Of Parent Element in JavaScript Get Table Row Index onclick in JavaScript Remove specific option from Select Tag with JavaScript Change Selected Option of Select Tag with JavaScript Get Length of Text In Textarea with JavaScript Change Text Color of Select Tag Option using JavaScript Change Heading Text in JavaScript Get Input Value Length in JavaScript Toggle Button Text with JavaScript Change Background Color of Dropdown with Dropdown using JavaScript Emoji Mood Slider with HTML CSS and JavaScript Hide and Show Div with Radio Button using JavaScript Count Options In Select Tag with JavaScript Get Select Tag Text OnChange with JavaScript Change Background Color OnClick using Input Field