html5 storage localstorage Three Musketeers

Local storage localstorage

Two methods

	// localSortage对象：把数据以字符串的方式保存本地
	// 获取： localStorage.getItem()
	// 设置： localStorage.setItem()

Case

// Get element
var TXT = document.getElementById ( 'TXT');
var A = document.querySelector ( 'A');
a.onclick = function () {
// get the user content
var = Val txt.value;
// provided
localStorage.setItem ( 'the userName', Val);
}
set
// localStorage.setItem (key, value)
// localStorage.setItem ( 'the uname', 'Chi Master');
// localStorage.setItem ( 'Age', 22 is );
// localStorage.setItem ( 'the uname', 'LiXunHuan');
obtaining
// Get: localStorage.getItem (key)
// n-var = localStorage.getItem ( 'the uname');
// the console.log (n-) ;

LocalStorage and local offline storage sessionStorage What is the difference

本地离线存储 localStorage 长期存储数据，浏览器关闭后数据不丢失；
sessionStorage 的数据在浏览器关闭后自动删除

What local storage of HTML5 is the concept? How long is the life cycle?