Html5 Web的5中离线存储方式之localStorage

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>HTML5中LocalStorage的使用</title>
</head>
<body>
    <p>
  你浏览当前页面
  <span id="count">N</span>
  次.
</p>
<script>
    if (!localStorage.pageLoadCount)
        localStorage.pageLoadCount = 0;
    localStorage.pageLoadCount = parseInt(localStorage.pageLoadCount) + 1;
    document.getElementById('count').textContent = localStorage.pageLoadCount;
</script>
</body>
</html>

/**
 * 保存/更新数据
 */
function saveDm(dataModel){
    window.localStorage['DataModel'] = dataModel;
}

/**
 * 获取数据
 */
function getDm(){  
    var value = window.localStorage['DataModel'];
    if(value){
        return value;
    }    
    return '';
}

/**
 * 删除数据
 */
function clearDm(){
    if(window.localStorage['DataModel']){
        delete window.localStorage['DataModel'];        
    }   
}