localStorage，sessionStorage
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <textarea id="text" cols="80" rows="10"></textarea> <input type="button" value="set" id="btn-set"> <input type="button" value="get" id="btn-get"> </body> <script> var btnSet = document.querySelector(‘#btn-set‘); var btnGet = document.querySelector(‘#btn-get‘); var text = document.querySelector(‘#text‘) btnGet.addEventListener(‘click‘,function(){ /* if(window.localStorage){ text.value = localStorage[‘key1‘]; }*/ if(window.sessionStorage){ /*alert("支持");*/ text.value = sessionStorage[‘key1‘]; } }); btnSet.addEventListener(‘click‘, function () { /* localStorage[‘key1‘] = text.value;*/ sessionStorage[‘key1‘] = text.value; }); </script> </html>
原文：http://www.cnblogs.com/suxiaoxia/p/6850235.html