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JavaScript Local storage

Before HTML5 application data had to be stored in cookies,included in every request. Web storage is more secure and can stored large amount of data locally without affecting on web site performance.

Two objects for storing data

  • session object window.sessionStorage used to store data for one session and data lost when browser closed.
  • local object window.localStorage used to stroe data with no expiration date.

Before using storage check if browser support it or not

if(typeof(Storage)!==undefined){
    //code to store data in web storage
}else{
    alert("Sorry Browser Not Support Storage");
}

Store data

localStorage.setItem("Name","Ahmed"); or localStorage.Name="Ahmed";

Get data

localStorage.getItem("Name"); or localStorage.Name;

Delete data

localstorage.removeItem("Name");

About the project

I have been created a todo list application (CRUD) using localstorage you can download project. To know how you can use localStorage to store data locally.