[英]Getting the value of a variable from localStorage from a different javascript file
having a problem using localstorage in javascript. 在javascript中使用localstorage时遇到问题。 I have two javascript files and one multi-page html file. 我有两个javascript文件和一个多页html文件。 I'm setting the value of a variable to store in local storage in the home.js class and I then want to get the value of the same variable in my editCase.js class. 我将变量的值设置为存储在home.js类的本地存储中,然后我想在editCase.js类中获取相同变量的值。 Is this possible? 这可能吗? The goal here is to use the variable several places in the html file. 这里的目标是在html文件中使用变量的几个位置。
home.js: home.js:
var _NSCaseId;
var nsId;
$("#listOfCases li").click(function(){
nsId = $(this).attr('id');
LocalStorage.save(_NSCaseId, nsId);
alert(nsId);
});
As you can see, the value is the id of a listview item. 如您所见,该值是listview项的id。 This works fine and the alert shows the correct value every time. 此工作正常,警报每次都显示正确的值。
I then want to use the same variable in the editCase.js file: 然后我想在editCase.js文件中使用相同的变量:
var id = LocalStorage.get(_NSCaseId);
alert(id);
But I get an error in logcat saying _NSCaseId is undefined in editCase.js 但我在logcat中收到错误,说在editCase.js中未定义_NSCaseId
Any suggestions? 有什么建议?
This shouldn't be working at all. 这应该根本不起作用。 Its localStorage
(JS is very case sensitive), and to save an item, you use setItem
, change your syntax to: 它的localStorage
(JS非常区分大小写),为了保存项目,你使用setItem
,将你的语法更改为:
//You would not define var _NSCaseId and save the var, you save a string key
localStorage.setItem('_NSCaseId', nsId); //set
And to get 得到
localStorage.getItem('_NSCaseId');
See DOM Storage: https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage 请参阅DOM存储: https : //developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage
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