Javascript 如何在localstorage中存储多个数据
我需要什么 我需要在数组中存储更多的数据,这样用户单击div时,相应的数据必须存储在数组中。 像 身份证号码:1223,城市:'芝加哥' 身份证号码:12333,纽约市 代码 第二步Javascript 如何在localstorage中存储多个数据,javascript,jquery,Javascript,Jquery,我需要什么 我需要在数组中存储更多的数据,这样用户单击div时,相应的数据必须存储在数组中。 像 身份证号码:1223,城市:'芝加哥' 身份证号码:12333,纽约市 代码 第二步 /* fetch the data using from localstorage */ var id= []; var name= []; var city = []; var country =[]; var event_
/* fetch the data using from localstorage */
var id= [];
var name= [];
var city = [];
var country =[];
var event_url= [];
// Retrieve the object from storage
//var id, city, country,event_url;
var id = localStorage.getItem('id');
console.log(id);
id = JSON.parse(id);
var name = localStorage.getItem('name');
name = JSON.parse(name);
console.log(name);
var name = localStorage.getItem('name');
name = JSON.parse(name);
var city = localStorage.getItem('city');
city = JSON.parse(city);
console.log(city);
var country = localStorage.getItem('country');
country = JSON.parse(country);
console.log(country);
var event_url = localStorage.getItem('event_url');
event_url = JSON.parse(event_url);
///console.log(event_url);
var image_url = localStorage.getItem('imageUrl');
//event_url = JSON.parse(event_url);
alert(image_url);
console.log(image_url);
以下是快照:
我需要在数组中存储更多字符串。
我已尝试使用console.logid.length//undefined。
我还希望在localstoarge中存储更多的值
for (var i = 0; i < localStorage.length; i++) {
console.log(localStorage.key(i))
};
可以对整个对象进行字符串化并立即保存所有内容:
localStorage.setItem('event', JSON.stringify({
id: sess_id,
name: name,
city: city,
country: country,
event_url: event_url,
imageUrl: imageUrl
}));
它还将使代码更简单、更短:
function favaorite(sess_id, name, city, country, event_url, pointer) {
/* store imageurl in localstorage */
var imageUrl = '/images/star1_phonehover.png';
// Save data to the current local store//
if (typeof (localStorage) == 'undefined') {
console.log('Your browser does not support HTML5 localStorage. Try upgrading.');
} else {
try {
// Put the object into storage
localStorage.setItem('event', JSON.stringify({
id: sess_id,
name: name,
city: city,
country: country,
event_url: event_url,
imageUrl: imageUrl
}));
} catch (e) {
if (e == QUOTA_EXCEEDED_ERR) {
console.log('Quota exceeded!'); //data wasn't successfully saved due to quota exceed so throw an error
}
}
}
}
检索保存的事件数据时,只需执行相反的操作:
var eventData = JSON.parse(localStorage.getItem('event'));
可以对整个对象进行字符串化并立即保存所有内容:
localStorage.setItem('event', JSON.stringify({
id: sess_id,
name: name,
city: city,
country: country,
event_url: event_url,
imageUrl: imageUrl
}));
它还将使代码更简单、更短:
function favaorite(sess_id, name, city, country, event_url, pointer) {
/* store imageurl in localstorage */
var imageUrl = '/images/star1_phonehover.png';
// Save data to the current local store//
if (typeof (localStorage) == 'undefined') {
console.log('Your browser does not support HTML5 localStorage. Try upgrading.');
} else {
try {
// Put the object into storage
localStorage.setItem('event', JSON.stringify({
id: sess_id,
name: name,
city: city,
country: country,
event_url: event_url,
imageUrl: imageUrl
}));
} catch (e) {
if (e == QUOTA_EXCEEDED_ERR) {
console.log('Quota exceeded!'); //data wasn't successfully saved due to quota exceed so throw an error
}
}
}
}
检索保存的事件数据时,只需执行相反的操作:
var eventData = JSON.parse(localStorage.getItem('event'));
试着这样,
您必须创建一个对象并在每次单击时填写详细信息,将该对象推送到一个数组中,并使用JSON.stringify将该数组存储在本地存储中
再次检索时,使用JSON.parse解析该JSON
function favaorite(sess_id,name,city,country,event_url,pointer){
var eventData = JSON.parse(localStorage.getItem('eventData '));
if(eventData ==null){
eventData=[];
}
Var details={};
details["sess_id"]=sess_id;
details["name"]=name;
details["city"]=city;
details["country"]=country;
details["event_url"]=event_url;
details["pointer"]=pointer;
eventData.push(details);
localStorage.setItem('eventData', JSON.stringify(eventData));
}
在检索并将字符串解析为json时,您将获得这些单击事件详细信息的数组
var EventDetails=JSON.parse(localStorage.getItem('eventData '));
试着这样,
您必须创建一个对象并在每次单击时填写详细信息,将该对象推送到一个数组中,并使用JSON.stringify将该数组存储在本地存储中
再次检索时,使用JSON.parse解析该JSON
function favaorite(sess_id,name,city,country,event_url,pointer){
var eventData = JSON.parse(localStorage.getItem('eventData '));
if(eventData ==null){
eventData=[];
}
Var details={};
details["sess_id"]=sess_id;
details["name"]=name;
details["city"]=city;
details["country"]=country;
details["event_url"]=event_url;
details["pointer"]=pointer;
eventData.push(details);
localStorage.setItem('eventData', JSON.stringify(eventData));
}
在检索并将字符串解析为json时,您将获得这些单击事件详细信息的数组
var EventDetails=JSON.parse(localStorage.getItem('eventData '));
ist可能事件{id:1223,},{id:333},{id:222}应该存储在localstoargyes中吗?是的,可能。只需存储一个对象数组。stringify[{id:1223},{id:333},{id:222}]。我怎么能像JSON那样存储呢条件,然后显示图像对不起,我不明白你的意思。请为事件添加相关代码。id!=问题,所以我可以看一看。是否有可能事件{id:1223,},{id:333},{id:222}应该存储在localstoargyes中,这是可能的。只需存储一个对象数组。stringify[{id:1223},{id:333},{id:222}]。我怎么能像JSON那样存储呢条件,然后显示图像对不起,我不明白你的意思。请为事件添加相关代码。id!=问题,以便我可以看一看。完美答案,我期待着这伟大的欢呼:完美答案,我期待着这伟大的欢呼: