Detailed explanation of local storage usage of H5's LocalStorage

if(window.localStorage){
 alert('This browser supports localStorage');
}else{
 alert('This browser does NOT support localStorage');
}

localStorage.a = 3;//设置a为"3"
localStorage["a"] = "sfsf";//设置a为"sfsf"，覆盖上面的值
localStorage.setItem("b","isaac");//设置b为"isaac"
var a1 = localStorage["a"];//获取a的值
var a2 = localStorage.a;//获取a的值
var b = localStorage.getItem("b");//获取b的值
localStorage.removeItem("c");//清除c的值

var storage = window.localStorage;
function showStorage(){
 for(var i=0;i<storage.length;i++){
  //key(i)获得相应的键，再用getItem()方法获得对应的值
  document.write(storage.key(i)+ " : " + storage.getItem(storage.key(i)) + "<br>");
 }
}

var storage = window.localStorage;
if (!storage.getItem("pageLoadCount")) storage.setItem("pageLoadCount",0);
storage.pageLoadCount = parseInt(storage.getItem("pageLoadCount")) + 1;//必须格式转换
document.getElementByIdx_x("count").innerHTML = storage.pageLoadCount;
showStorage();

if(window.addEventListener){
 window.addEventListener("storage",handle_storage,false);
}else if(window.attachEvent){
 window.attachEvent("onstorage",handle_storage);
}
function handle_storage(e){
 if(!e){e=window.event;}
 //showStorage();
}

You have viewed this page 0  time(s).

<script>
var storage = window.localStorage;
if (!storage.getItem(&quot;pageLoadCount&quot;)) storage.setItem(&quot;pageLoadCount&quot;,0);
storage.pageLoadCount = parseInt(storage.getItem(&quot;pageLoadCount&quot;)) + 1;//必须格式转换
document.getElementByIdx_x(&quot;count&quot;).innerHTML = storage.pageLoadCount;
showStorage();
if(window.addEventListener){
 window.addEventListener("storage",handle_storage,false);
}else if(window.attachEvent){
 window.attachEvent("onstorage",handle_storage);
}
function handle_storage(e){
 if(!e){e=window.event;}
 showObject(e);
}
function showObject(obj){
 //递归显示object
 if(!obj){return;}
 for(var i in obj){
  if(typeof(obj[i])!="object" || obj[i]==null){
   document.write(i + " : " + obj[i] + "<br/>");
  }else{
   document.write(i + " : object" + "<br/>");
  }
 }
}
storage.setItem("a",5);
function changeS(){
 //修改一个键值，测试storage事件
 if(!storage.getItem("b")){storage.setItem("b",0);}
 storage.setItem('b',parseInt(storage.getItem('b'))+1);
}
function showStorage(){
 //循环显示localStorage里的键值对
 for(var i=0;i<storage.length;i++){
  //key(i)获得相应的键，再用getItem()方法获得对应的值
  document.write(storage.key(i)+ " : " + storage.getItem(storage.key(i)) + "<br>");
 }
}
</script>

var details = {author:"isaac","description":"fresheggs","rating":100};
storage.setItem("details",JSON.stringify(details));
details = JSON.parse(storage.getItem("details"));

<meta content="IE=7" http-equiv="X-UA-Compatible"/>