web-storage | 易学教程

Web Storage (sessionStorage and localStorage) in private browsing mode (incognito)

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问题 BACKGROUND The HTML5 Web Storage feature in modern browsers is accessed through Javascript commands such as: sessionStorage.setItem("username", "John"); localStorage.setItem("username", "John") The site Can I use indicates that browser support is near 90%. However , in the "Known Issues" tab, Can I use says: In private browsing mode, Safari, iOS Safari and the Android browsers do not support setting localStorage. MY QUESTION In private browsing mode, do Safari, iOS Safari and the Android

Workaround for not being able to save booleans with HTML5 Web Storage

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问题 I'm currently making a Mario-esque game with Javascript, or more precisely, CraftyJS. I've looked here as reference, and understand how to save values inputed by the user. But what I want to accomplish is to save certain booleans(is that what they are called?) automatically, or when the player presses a save button or something. For example, I have a dungeon called dungeon1, and I create a variable to represent whether or not the dungeon has been completed. It's var dungeon1 = false; by

Access web storage from server side - possible?

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问题 I've stored some strings in web storage (session and/or local), and am wondering if it is possible to check for such stored strings on page load or init on the server-side (asp.net c# in my case)... So, for example, I will know not to re-fetch data from the db and use what is already resident in the browser from the last page load. 回答1: No, that's not possible. sessionStorage lives on the client. If you want to access it on the server you will have to write javascript that reads the value,

PhoneGap iOS 7 and localStorage

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问题 I’m currently building a PhoneGap 3.3.0 iOS application which uses Ember.js/EmberData with a LocalStorage adapter to persist data. After reading some articles like this StackOverflow question I’d like to know how the LocalStorage data is handled by iOS 7. Is it stored permanently or still stored in a cache folder which is note backed up to iTunes/iCloud? Unfortunately, the PhoneGap documentation on LocalStorage only refers to the official W3C spec. The only thing said about the handling of

How secure is JWT

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问题 I know this question is not anything new, possibly already been discuss all over the internet. I'm new to it but after some study, I agree that it is safe as anonymous could sniff the Token but unable to append anything on it. I'm planning to store JWT in HTML5Storage, and decode the payload for some in-sensitive information: DisplayName, email_address, and role_info and etc. Here is my question, could anonymous sniff my JWT Token and act on-behalf of me? If that is possible, how can I avoid

HTML5 web storage: can different websites overwrite each other’s data on a user’s computer?

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问题 I have a few questions regarding the concept of HTML5 storage. I went through the w3c specification, books and tutorials on the same, but still I am a bit unclear about certain concepts: Assume that I access Website A. Some JavaScript runs in my browser that sets a key value pair, say ('username','deepak') . Then I access Website B which also adds a key,value pair in the localstorage as ('username','mahalingam') . How will they both be differentiated? Will Website B override the value set by

HTML5SQL retrieve records from web databases using SELECT statements

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问题 I am creating an iphone webapp using jquery mobile/phonegap and I am trying to use web database. I have about 700 records to insert and want to have a separate file with the sql statements to create the table and insert the records the fist time the app runs. I decided to use an small javascript module called html5sql because It gives me the advantage of executing several sql statements in one single transaction. for example I can execute sql = "CREATE TABLE milestones ( ID INT( 10 ) NOT NULL

HTML5SQL retrieve records from web databases using SELECT statements

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I am creating an iphone webapp using jquery mobile/phonegap and I am trying to use web database. I have about 700 records to insert and want to have a separate file with the sql statements to create the table and insert the records the fist time the app runs. I decided to use an small javascript module called html5sql because It gives me the advantage of executing several sql statements in one single transaction. for example I can execute sql = "CREATE TABLE milestones ( ID INT( 10 ) NOT NULL, Title VARCHAR( 50 ) DEFAULT NULL, mYear INT( 11 ) NOT NULL); INSERT INTO `milestones` VALUES ('2',

PhoneGap iOS 7 and localStorage

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I’m currently building a PhoneGap 3.3.0 iOS application which uses Ember.js/EmberData with a LocalStorage adapter to persist data. After reading some articles like this StackOverflow question I’d like to know how the LocalStorage data is handled by iOS 7. Is it stored permanently or still stored in a cache folder which is note backed up to iTunes/iCloud? Unfortunately, the PhoneGap documentation on LocalStorage only refers to the official W3C spec. The only thing said about the handling of the web storage is a description of a flag in the config.xml : BackupWebStorage (string, either none,

Access web storage from server side - possible?

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I've stored some strings in web storage (session and/or local), and am wondering if it is possible to check for such stored strings on page load or init on the server-side (asp.net c# in my case)... So, for example, I will know not to re-fetch data from the db and use what is already resident in the browser from the last page load. No, that's not possible. sessionStorage lives on the client. If you want to access it on the server you will have to write javascript that reads the value, puts it in a hidden field so that it is sent to the server. Or javascript that will read the value from the