JavaScript enables simple local data access and JSON data access

1. Determine if local storage is available:

if (window.localstorage) {   //Localstorge available   }else {  //Localstorge unavailable   }  

2. Store Data:

Gets the local storage object  var localstorage =window.localstorage;  Storage  Localstorage.setitem ("key", content);  

3. Remove the data

var myKey =localstorage.getitem ("key");  

4. Delete the specified data

Localstorage.removeitem ("key");  

5. Clear Local Data

Localstorage.clear ();  

6. Storing and reading JSON data

Define the JSON variable  var json ={username: "Yang Zhilai", Sex:1,age:25,birthday: "1990-08-21", Phonenumber:13812345678,disease: " Pulmonary nodules ", Insurance:1,avatar:" Images/male.png "};  JSON variable converted to JSON string  var jsonstr =json.stringify (JSON);  Store JSON string  window.localStorage.setItem ("Jsonkey", jsonstr);  Remove the JSON string  var jsonstr =window.localstorage.getitem ("Jsonkey");  Restore JSON object  var json =json.parse (JSONSTR);  Remove the username  var username =json.username inside the JSON;  

　　

JavaScript enables simple local data access and JSON data access