The named key that was added, removed, or moddified
这里添加两个键值对a和b，并增加一个按钮。给a设置固定的值，当点击按钮时，修改b的值：
JavaScript Code复制内容到剪贴板
<body>
<p>You have viewed this page <span id="count">0</span> time(s).</p>
<p><input type="button" value="changeStorage" onClick="changeS()"/></p>
<script>
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);
}elseif(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++){
