本地存储

一、cookie

//设置cookie
function setcookie(name,value){
    var iDate=10*24*60*60*1000;
    var oDate = new Date;
    oDate.setDate(oDate.getDate() + iDate);
    document.cookie = name+'='+value+';expires='+oDate;
}
//获取cookie
function getcookie(name){
    var str = document.cookie;
    var arr = str.split('; ');
    for(var i=0;i<arr.length;i++){
        var arr1 = arr[i].split('=');
        if(arr1[0] == name){
            return arr1[1];
        }
    }
    return '';
}
//删除cookie
function removecookie(name){
    setcookie(name, "", -1);
}

　　二、localStorage

存储到本地：window.localStorage.setItem(key,value)
获取本地存储：window.localStorage.getItem(key)
清除本地缓存：window.localStorage.removeItem(key)

 

三、因为safari浏览器无痕模式，对localStorage不兼容，可以用cookie

//判断是否支持localStorage
function isLocalStorageSupport(){
    try {
        var isSupport = 'localStorage' in window && window['localStorage'] !== null;
        if (isSupport) {
            localStorage.setItem('__test', '1');
            localStorage.removeItem('__test');
        }
        return isSupport;
    } catch (e) {
        return false;
    }
}

　

//获取本地存取
function getAccountInfo(key){
    if(isLocalStorageSupport()){
        return window.localStorage.getItem(key);
    }else if(window.navigator.cookieEnabled){
        return getcookie(key);
    }
    return null
}
//存储到本地
function setAccountInfo(key,value){
    if(isLocalStorageSupport()){
         return  window.localStorage.setItem(key,value);
    }else if(window.navigator.cookieEnabled){
         return setcookie(key,value);
    }
    return null
}

//清除本地存储
function clearAccountInfo(key){
    if(isLocalStorageSupport()){
        return  window.localStorage.removeItem(key);
    }else if(window.navigator.cookieEnabled){
        return removecookie(key);
    }
    return null
}