HTML5的sql处理 

<!DOCTYPE HTML>  
<html>  
<head>  
    <meta charset="utf-8"/>  
    <title>HTML5本地存储之本地数据库篇</title>  
    <script type="text/javascript">
    //打开数据库  
var db = openDatabase('contactdb','','local database demo',204800);  
  
//保存数据  
function save(){  
    var user_name = document.getElementById("user_name").value;  
    var mobilephone = document.getElementById("mobilephone").value;  
    var company = document.getElementById("company").value;  
    //创建时间  
    var time = new Date().getTime();  
    db.transaction(function(tx){  
        tx.executeSql('insert into contact values(?,?,?,?)',[user_name,mobilephone,company,time],onSuccess,onError);  
    });  
}  
 //sql语句执行成功后执行的回调函数  
function onSuccess(tx,rs){  
    alert("操作成功");  
    loadAll();  
}  
//sql语句执行失败后执行的回调函数  
function onError(tx,error){  
    alert("操作失败，失败信息："+ error.message);  
}  
//将所有存储在sqlLite数据库中的联系人全部取出来  
function loadAll(){  
    var list = document.getElementById("list");  
    db.transaction(function(tx){  
        //如果数据表不存在，则创建数据表  
        tx.executeSql('create table if not exists contact(name text,phone text,company text,createtime INTEGER)',[]);  
        //查询所有联系人记录  
        tx.executeSql('select * from contact',[],function(tx,rs){  
           if(rs.rows.length>0){  
                var result = "<table>";  
                result += "<tr><th>序号</th><th>姓名</th><th>手机</th><th>公司</th><th>添加时间</th><th>操作</th></tr>";  
                for(var i=0;i<rs.rows.length;i++){  
                    var row = rs.rows.item(i);  
                    //转换时间，并格式化输出  
                    var time = new Date();  
                    time.setTime(row.createtime);  
                    var timeStr = time.format("yyyy-MM-dd hh:mm:ss");  
                    //拼装一个表格的行节点  
                    result += "<tr><td>"+(i+1)+"</td><td>"+row.name+"</td><td>"+row.phone+"</td><td>"+row.company+"</td><td>"+timeStr+"</td><td><input type='button' value='删除' onclick='del("+row.phone+")'/></td></tr>";  
                }  
                list.innerHTML = result;  
           }else{  
                list.innerHTML = "目前数据为空，赶紧开始加入联系人吧";  
           }   
        });  
    });  
}  
//删除联系人信息  
function del(phone){  
     db.transaction(function(tx){  
        //注意这里需要显示的将传入的参数phone转变为字符串类型  
        tx.executeSql('delete from contact where phone=?',[String(phone)],onSuccess,onError);  
    });  
}  
//格式化时间的format函数
Date.prototype.format = function(format)  
{  
    var o = {  
    "M+" : this.getMonth()+1, //month  
    "d+" : this.getDate(),    //day  
    "h+" : this.getHours(),   //hour  
    "m+" : this.getMinutes(), //minute  
    "s+" : this.getSeconds(), //second  
    "q+" : Math.floor((this.getMonth()+3)/3),  //quarter  
    "S" : this.getMilliseconds() //millisecond  
    }  
    if(/(y+)/.test(format)) format=format.replace(RegExp.$1,  
    (this.getFullYear()+"").substr(4 - RegExp.$1.length));  
    for(var k in o)if(new RegExp("("+ k +")").test(format))  
    format = format.replace(RegExp.$1,  
    RegExp.$1.length==1 ? o[k] :  
    ("00"+ o[k]).substr((""+ o[k]).length));  
    return format;  
}  
    </script>
    <style>  
        .addDiv{  
            border: 2px dashed #ccc;  
            width:400px;  
            text-align:center;  
        }  
        th {  
    font: bold 11px "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif;  
    color: #4f6b72;  
    border-right: 1px solid #C1DAD7;  
    border-bottom: 1px solid #C1DAD7;  
    border-top: 1px solid #C1DAD7;  
    letter-spacing: 2px;  
    text-transform: uppercase;  
    text-align: left;  
    padding: 6px 6px 6px 12px;  
}  
td {  
    border-right: 1px solid #C9DAD7;  
    border-bottom: 1px solid #C9DAD7;  
    background: #fff;  
    padding: 6px 6px 6px 12px;  
    color: #4f6b72;  
}  
    </style>  
</head>  
<body onload="loadAll()">  
    <div class="addDiv">     
        <label for="user_name">姓名：</label>  
        <input type="text" id="user_name" name="user_name" class="text"/>  
        <br/>  
        <label for="mobilephone">手机：</label>  
        <input type="text" id="mobilephone" name="mobilephone"/>  
        <br/>  
        <label for="mobilephone">公司：</label>  
        <input type="text" id="company" name="company"/>  
        <br/>  
        <input type="button" onclick="save()" value="新增记录"/>  
    </div>  
    <br/>  
    <div id="list">  
    </div>  
</body>  
</html>

 

posted @ 2023-12-17 21:10  justSmile2  阅读(29)  评论(0)  编辑  收藏  举报
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