Get input Element Value On Click Using JavaScript

In this tutorial we will see how to Get input Element Value On Click Using JavaScript. The onclick event is used with HTML Dom getElementsByTagName method for this.

HTML Code

HTML Code is given below, This code contains button element with onclick event and an input element.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Get input Element Value On Click Using JavaScript</title>
</head>
<body>
<input type="text" value="HowToCodeSchool.com">    
<button onclick="getValue()">Get Value</button>
</body>
</html>

onclick Event

JavaScript Code is given below, In this code the onclick event is used to get the value of input element.

The onclick event occurs when an element is clicked, it is used to call a JavaScript function when click event is occurred.

HTML Dom getElementsByTagName method

The HTML Dom getElementsByTagName method returns the collection of element with the specified tag name.

In this code it is used to get the input element. After targeting the input element, .value method is used to get it's value.

JavaScript Code

Take a look at the code given below.

<script>
function getValue()
{
var id=document.getElementsByTagName("input")[0];
alert(id.value);
}
</script>

Demo

Video Tutorial

Watch video tutorial on how to Get input Element Value On Click Using JavaScript.

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