localStoragesessionStorage的使用
localStorage，sessionStorage的使用-介绍了localStorage，sessionStorage基本信息及使用注意事项alert("浏览器不支持 Flocalstorage");return false:else/主逻辑业务ocalStorage的写入方法:if(window. localStorage)talert("浏览器不支持 localstorage");return false.elsevar storage=window. localStorage//写入a字段storage[a]=1;//写入b字段storage.a=1,//写入c字段storage. setitem(c, 3)console. log(typeof storage["a"D)console. log(typeof storage["b"D)console. log(typeof storage["c 1)运行后的结果如下:FRamesValue目 Web SQL目IndexedDBabcTE Local Storagefile:r目 Session StorageEa CookiesApplication cache目 Cache storaged Service WorkerslocalStorage的使用也是遵循同源策略的,所以不同的网站直接是不能共用相同的 localStorage在控制台上面打印出来的结果是:了topPreserve logstringstrIngStrIngloca| Storage只支持 string类型的存储。ocalStorage的读取方法:if(window.local Storage)ialert("浏览器不支持 Flocalstorage");return falseelsevar storage=window. localStorage//写入a字段storage[a ]=1;//写入b字段storage.a=l,//写入c字段storage. setitem( C, 3);console. log(typeof storage["aD)console. log(typeof storage[b"1);console. log(typeof storage["c 1://第一种方法读取var a=storage. aconsole.log(a)//第二种方法读取var b=storage["b"];console.log(b);//第三种方法读取var c=storage getItem("C" )console.log(c);ocalStorage的清除数据方法var storage=window.localStoragestorage. clear0;//清空全部storage. removeltem("a");//清除指定itemocalStorage的修改方法var storage=window. localStorage:storage.setter("a"," teststring");//覆盖指定itemocalStorage的键获取方法:var storage=window. localStorage;storage.a=lstorage. setitem(c, 3)for(var i=O; i
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