LocalStorage 本地存储 做一个简单留言板

二话不说，先上代码：

1 <body>
2     <div><textarea  id="trCon" cols="30" rows="10"></textarea></div>
3     <div><input type="button" value="发表" onclick="PostCon()"><input type="button" value="清除" onclick="Clear()"></div>
4     <div id="dCon"></div>
5 </body>

此代码为一个简单留言板：

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LocalStorage 简单理解的话，有点像cookie。将发表的评论保存在本地，浏览器刷新的时候会从本地加载评论

js代码：

 <script type="text/javascript">
        $(function(){
           if (localStorage.getItem("k_con")!=null) {
            ("k_con",$("#dCon").html(localStorage.getItem("k_con")));
           }
        })
        function PostCon(){
            var sCon = $("#trCon").val();
            $("#dCon").append("<div>" +sCon+ "</div>");
            localStorage.setItem("k_con",$("#dCon").html());
        }
        function Clear(){
            $("#dCon").html("");
            localStorage.clear();
        }
    </script>

效果：

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所有代码：

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>留言板</title>
 6     <script type="text/javascript" src="js/jquery.js"></script>
 7     <script type="text/javascript">
 8         $(function(){
 9            if (localStorage.getItem("k_con")!=null) {
10             ("k_con",$("#dCon").html(localStorage.getItem("k_con")));
11            }
12         })
13         function PostCon(){
14             var sCon = $("#trCon").val();
15             $("#dCon").append("<div>" +sCon+ "</div>");
16             localStorage.setItem("k_con",$("#dCon").html());
17         }
18         function Clear(){
19             $("#dCon").html("");
20             localStorage.clear();
21         }
22     </script>
23 </head>
24 <body>
25     <div><textarea  id="trCon" cols="30" rows="10"></textarea></div>
26     <div><input type="button" value="发表" onclick="PostCon()"><input type="button" value="清除" onclick="Clear()"></div>
27     <div id="dCon"></div>
28 </body>
29 </html>

 

posted @ 2016-08-12 00:18  YJ-Alex  阅读(1471)  评论(0)  编辑  收藏  举报