web 存储

DOCTYPE html>
html lang="en">
head>
    meta charset="UTF-8">
    meta name="viewport" content="width=device-width, initial-scale=1.0">
    meta http-equiv="X-UA-Compatible" content="ie=edge">
    title>Documenttitle>
head>
body>
        div style="border: 2px dashed #ccc;width:320px;text-align:center;">     
                label for="sitename">网站名(key)：label>  
                input type="text" id="sitename" name="sitename" class="text"/>  
                br/>  
                label for="siteurl">网 址(value)：label>  
                input type="text" id="siteurl" name="siteurl"/>  
                br/>  
                input type="button" onclick="save()" value="新增记录"/>  
                hr/>  
                label for="search_phone">输入网站名：label>  
                input type="text" id="search_site" name="search_site"/>  
                input type="button" onclick="find()" value="查找网站"/>  
                p id="find_result">br/>p>  
            div>  
            br/>  
            div id="list">  
            div>  
            script>
            // 载入所有存储在localStorage的数据
            loadAll();     
                
            //保存数据  
            function save(){  
                var siteurl = document.getElementById("siteurl").value;  
                var sitename = document.getElementById("sitename").value;  
                localStorage.setItem(sitename, siteurl);
                alert("添加成功");
            }
            //查找数据  
            function find(){  
                var search_site = document.getElementById("search_site").value;  
                var siteurl = localStorage.getItem(search_site);  
                var find_result = document.getElementById("find_result");  
                find_result.innerHTML = search_site + "的网址是：" + siteurl;  
            }
            //将所有存储在localStorage中的对象提取出来，并展现到界面上
            function loadAll(){  
                var list = document.getElementById("list");  
                if(localStorage.length>0){  
                    var result = "";  
                    result +="";  
                    for(var i=0;ilocalStorage.length;i++){  
                        var sitename = localStorage.key(i);  
                        var siteurl = localStorage.getItem(sitename);  
                        result += "";  
                    }  
                   // result += "

 

key
value


"+sitename+"


"+siteurl+"


";  
                    list.innerHTML = result;  
                }else{  
                    list.innerHTML = "数据为空……";  
                }  
            }      
            script>
body>
html>

Json处理
DOCTYPE html>
html>  
head>  
    meta charset="utf-8">  
    title>HTML5本地存储之Web Storage篇title>  
head>  
body>  
    div style="border: 2px dashed #ccc;width:320px;text-align:center;">
        label for="keyname">别名(key):label>  
        input type="text" id="keyname" name="keyname" class="text"/>  
        br/>  
        label for="sitename">网站名：label>  
        input type="text" id="sitename" name="sitename" class="text"/>  
        br/>  
        label for="siteurl">网 址：label>  
        input type="text" id="siteurl" name="siteurl"/>  
        br/>  
        input type="button" onclick="save()" value="新增记录"/>  
        hr/>  
        label for="search_phone">输入别名(key)：label>  
        input type="text" id="search_site" name="search_site"/>  
        input type="button" onclick="find()" value="查找网站"/>  
        p id="find_result">br/>p>  
    div>  
    br/>  
    div id="list">  
    div>  
    script>
    //保存数据  
    function save(){  
        var site = new Object;
        site.keyname = document.getElementById("keyname").value;
        site.sitename = document.getElementById("sitename").value;  
        site.siteurl = document.getElementById("siteurl").value;
        var str = JSON.stringify(site); // 将对象转换为字符串
        localStorage.setItem(site.keyname,str);  
        alert("保存成功");
    }  
    //查找数据  
    function find(){  
        var search_site = document.getElementById("search_site").value;  
        var str = localStorage.getItem(search_site);  
        var find_result = document.getElementById("find_result");
        var site = JSON.parse(str);  
        find_result.innerHTML = search_site + "的网站名是：" + site.sitename + "，网址是：" + site.siteurl;  
    }  
    
    //将所有存储在localStorage中的对象提取出来，并展现到界面上
    // 确保存储的 keyname 对应的值为转换对象，否则JSON.parse会报错
    function loadAll(){  
        var list = document.getElementById("list");  
        if(localStorage.length>0){  
            var result = "";  
            result +="";  
            for(var i=0;ilocalStorage.length;i++){ 
                var keyname = localStorage.key(i);  
                var str = localStorage.getItem(keyname);  
                var site = JSON.parse(str);  
                result += "";  
            }  
            result +="

 

别名
网站名
网址


"+site.keyname+"


"+site.sitename+"


"+site.siteurl+"

 
";  
            list.innerHTML = result;  
        }else{  
            list.innerHTML = "数据为空...";  
        }  
    }  
    script>
body>  
html>