Question

JS用localStorage存储天气数据问题

下面是weather.js中一段获取天气数据的代码，现在我想将获得的数据用localStorage存储在本地，这样就不至于每次启动都去获取数据，而且希望能够实现定时刷新这个天气数据。天气是在HTML中显示的

function GetXmlFeed() {

var lang = (typeof language == "string")?language.replace(/-/g, "_"):language;

var sc = document.createElement("script");

sc.src='http://wxdata.weather.com/wxdata/mobile/mobagg/' + code + '.js?key=e88d1560-a740-102c-bafd-001321203584&units=' + sUnit + '&locale=' + lang + '&cb=XmlFeedCB';

//alert(sc.src);
document.body.appendChild(sc);

}

function XmlFeedCB(going){

json = going[0]; //json is XML

ShowContent();

}

。。。。。。

目前知道可以类似下面这样修改

var locale = "32118";
Here is a location code for a weather widget. We need to save it so it doesn't reset.
Make a variable
var locale = prompt("Enter your ZipCode", "");
save it to LocalStorage
localStorage.setItem('nameoffile', locale);

how to get the file

var getitems = localStorage.getItem("nameoffile");

You can either alert(getitems); console.log or set it to variable

Now we need var locale to be dynamic. We cannot have it just a prompt.

For example. if(getitems != null){
var locale =getitems;
}

If get items is not empty, then var locale is equal to getitems, which is your LocalStorage
Below its saying if the getitems is empty then show a prompt, then save to localstorage.

else{
var locale = prompt("Enter your ZipCode", "");
localStorage.setItem('nameoffile', locale);
}

我没有修改成功，且代码没有刷新功能，请问大神该怎么解决呢？

Answer 1

首先localStorage只有在html5中才有，所以要确保浏览器支持html5，建议用谷歌浏览器。
其次创建一个js文件如 tempcache.js
//临时存储
var TempCache = {
cache: function (value) {
localStorage.setItem("EasyWayTempCache", value);
},
getCache: function () {
return localStorage.getItem("EasyWayTempCache");
},
setItem: function (key, value) {
localStorage.setItem(key, value);
},
getItem: function (key) {
return localStorage.getItem(key);
},
removeItem: function (key) {
return localStorage.removeItem(key);
}
};

调用时先引用该js文件 然后看下面的示例
设置值
TempCache.setItem("name","张三");
取值
var name=TempCache.getItem("name")；
移除设置的值
TempCache.removeItem("name");

希望对你有帮助