Storage

`sessionStorage.clear`

Removes all key/value pairs from the sessionStorage object for the current session

Syntax

JavaScript

sessionStorage.clear()

Return Value

undefined

Examples

Basic Usage

sessionStorage.clear()
console.log(sessionStorage.length) // 0

Practical Example

function resetWizard() {
  sessionStorage.clear()
  window.location.href = '/wizard/step-1'
}

Advanced Usage

const count = sessionStorage.length
sessionStorage.clear()
console.log(`Cleared ${count} session items`)

Understanding sessionStorage.clear

The sessionStorage.clear method in JavaScript removes all key/value pairs from the sessionStorage object for the current session. It belongs to the Storage object and is one of the most widely used methods for working with storage values in modern JavaScript and TypeScript applications.

The method signature is sessionStorage.clear(). When called, it returns undefined. Understanding when and how to use clear() helps you write more expressive, readable code.

Common use cases for sessionStorage.clear include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like sessionstorage-removeitem, localstorage-clear, sessionstorage-setitem, enabling you to chain operations together for complex data manipulation pipelines.

Browser support for sessionStorage.clear is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.