phpsession声明周期技巧_JavaScript sessionStorage运用

网页时欠妥心丢失这些数据。
sessionStorage的操作方法与localStorage相同;

1 存储

window.sessionStorage.setItem("userdata","Hello HTML5");window.sessionStorage["userdata"] = "Hello HTML5";window.sessionStorage.userdata = "Hello HTML5";

2 读取

var value1 = window.sessionStorage.getItem("userdata");var value1 = window.sessionStorage["userdata"];var value1 = window.sessionStorage.userdata;

3 打消

window.sessionStorage.removeItem("userdata");delete window.sessionStorage.userdata;delete window.sessionStorage["userdata"];

//全部打消

sessionStorage.clear();

session声明周期包括刷新网页的页面

sessionStorage.setItem("key",JSON.stringify(obj))var info=JSON.parse(sessionStorage.getItem("key"))