H5的LocalStorage如何在本地存储刷新值

<script type="text/javascript">

    if(window.sessionStorage){

        alert('ok');

    }else{

        alert('fail');

    }

    // 设置值

    sessionStorage.setItem('key_a', 1);

    // 取值

    var key_a = sessionStorage.getItem('key_a');

    console.log(key_a);

    // 删除

    sessionStorage.removeItem('key_a');

    console.log(sessionStorage.getItem('key_a'));// null

    sessionStorage.setItem('key_b', 1);

    sessionStorage.setItem('key_c', 2);

    // 清除所有键值

    sessionStorage.clear();

    console.log(sessionStorage.key_b);

    console.log(sessionStorage.key_c);

    console.log('==================');

    // 设置值和取值也可以使用.符号，类似于取对象属性

    // 设置值

    sessionStorage.key_d = 12;

    // 取值

    var key_d = sessionStorage.key_d;

    console.log(key_d);

    // 有个小区别，如果这个key没有了。一个返回值undefined，一个是null

    console.log(sessionStorage.key_null);// undefined

    console.log(sessionStorage.getItem('key_null'));// null

    console.log('==========简单演示一个存放对象的例子========');

    var obj = {

        a : 12,

        b : [1,2,3,4,5],

        c : {

            x : 'a',

            y : ['bb', 12, 'cc', {a:1,b:2}],

            z : 1333

        }

    };

    sessionStorage.setItem('page', JSON.stringify(obj));

    // 取值

    var page = JSON.parse(sessionStorage.getItem('page'));

    console.log(page);

    // 遍历下数组

    for(var i=0;i< page.b.length;i++){

        console.log(page.b[i]);

    }

    // 遍历对象，通常用in

    for(var j in page.c){

        console.log(page.c[j])

    }

    // 删除key

    sessionStorage.removeItem('page');

</script>

<p id="test"></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.getElementById("test").innerHTML = storage.pageLoadCount;

//showStorage();

</script>