域內安全、永久保存。即客戶端或瀏覽器中來自同一域名的所有頁面都可訪問localStorage數據且數據除了刪除否則永久保存,但客戶端或瀏覽器之間的數據相互獨立。
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> </body> </html> <script type="text/javascript"> localStorage.setItem("coffeeType", "mocha"); //存儲 var data = localStorage.getItem("coffeeType"); //讀取 console.log(data); localStorage.removeItem("coffeeType"); //刪除 var data2 = localStorage.getItem("coffeeType"); //讀取 console.log(data2); localStorage.clear(); //清空保存的所有數據 localStorage.setItem("haha", "123"); //存儲 </script>
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <button onclick="read();">讀取</button> </body> </html> <script type="text/javascript"> function read(){ var data = localStorage.getItem("haha"); //讀取 alert(data); } </script>