JavaScript Input

In JavaScript, the input refers to any data provided by the user which is collected by using various input elements such as text boxes, check boxes, radio buttons, etc.

Syntax

To retrieve the value of input, we can make use of the value property. For example:

let inputElement = document.getElementById("myInput");
let inputValue = inputElement.value;

Example

We can create an input element in HTML like this:

<label for="name">Name:</label>
<input type="text" id="name" name="name">

Then, using JavaScript, we can retrieve the value entered by the user like this:

let nameInput = document.getElementById("name");
let userName = nameInput.value;

Output

The value property will return the user's input as a string. In the above example, the value of userName variable will be the string entered by the user in the "Name" text box.

Explanation

The getElementById method is used to access the input element using its unique ID. Then, the value property of the element is used to retrieve the input value.

Use

Input values are commonly used in JavaScript to validate user input, manipulate page content, or interact with APIs or other web services.

Important Points

• The value property of an input element always returns a string.
• Different types of input elements have different properties that can be used to retrieve their values (e.g. checked property for check boxes and radio buttons).

Summary

JavaScript allows us to retrieve input data provided by users using the value property of input elements. We can use this input data to interact with web services, manipulate page content, or validate user input.