welcome to XRM blog

Keep in touch with latest CRM/ERP articles

To remain competitive your organisation must be efficient across the business process spectrum. To do so you need to take sound decisions based on a balance between the cost and risk. To do so you will be heavily dependent on your content management in itself needs...

image
Blog

About HTML5 Web Storage

By Rajesh on 1/1/2014

 

With HTML 5 now Web pages can store data locally on the user's browser so that performance can be improved. Local storage can make page load faster. Web storage works using cookies. However, Web Storage is more secure and faster than cookies. Data stored using cookies is server request dependent. In other word if a data is stored against a server request (action) then that data will be available for that for that server request (action) not for the other server request (action). Browser can be store large volumes of data, without affecting the website performance.

On the web page data is stored in Key/value pairs and data can be access by the web page. 

For efficiency there are two types objects that can be used for storing data on the client 

 
  • Local Storage:  stores data with no time limits it will never expire. 
  • Session Storage - stores data for one session (for example- We can use session storage object for login information of a user). 

If you want to use “web storage” methodology then first check if the browser supports session and local Storage. 

Local storage stores data with no time limits, hence the data will never be expiring. In other words  stored data will not be deleted when the browser is closed or system is restarted and data will always be available (for example- if you want to store the current city of the s user presuming that it will never change i.e. next day, week, month or years city remains the same). You can use the following code to store the city in the local storage. 

localStorage.city="melbourne";

document.getElementById("result").innerHTML="City: "+ localStorage.city; 

Example explained: 

Make a localStorage key and value pair with key="city" and value="melbourne"

Retrieve the value of the "city" key and insert it into the element with id="result" 

The following example will count the total number of times a user has been clicked a button. In this code the value string will be converted to a number and counter will be increase. 

if (localStorage.clickcount)

  {

  localStorage.clickcount=Number(localStorage.clickcount)+1;

  }

else

  {

  localStorage.clickcount=1;

  }

document.getElementById("result").innerHTML="You have been total clicked on button " + localStorage.clickcount + " time(s)."; 

The session Storage Object

A sessionStorage object works as a localStorage object, but the difference it has with  localStorage object is  that session data will be deleted when the user closes their browser window.

The following example will be counts the number of times when a user has been clicked on button, in the working session:

if (sessionStorage.clickcount)

  {

  sessionStorage.clickcount=Number(sessionStorage.clickcount)+1;

  }

else

  {

  sessionStorage.clickcount=1;

  }

document.getElementById("result").innerHTML=" You have been total clicked on button " + sessionStorage.clickcount + " time(s) in this session.";

 

HTML 5
Cookies
Javascript
Local Storage
Session Storage
Author
Blog Calendar
Blog Calendar List
2018 Nov  26  3
2018 Oct  7  3
2018 Sep  13  11
2018 Aug  2  2
2018 Jun  11  1
2018 Jan  41  2
2017 Sep  348  5
2017 Aug  14  1
2017 Jul  15  2
2017 Jun  36  2
2017 May  17  1
2017 Apr  31  2
2017 Mar  104  4
2017 Feb  269  4
2016 Dec  171  3
2016 Nov  267  8
2016 Oct  197  10
2016 Sep  341  6
2016 Aug  38  1
2016 Jun  1580  6
2016 May  102  3
2016 Jan  68  2
2015 Dec  373  6
2015 Nov  3  1
2015 Oct  11  1
2015 Sep  1105  6
2015 Aug  10  1
2015 Jul  101  2
2015 Jun  7  1
2015 May  20  1
2015 Apr  21  2
2015 Mar  67  3
2015 Jan  4998  4
2014 Dec  14  1
2014 Nov  2159  4
2014 Oct  74  2
2014 Sep  95  2
2014 Aug  2848  1
2014 Jul  40  2
2014 Apr  2401  12
2014 Mar  268  19
2014 Feb  216  8
2014 Jan  1490  16
2013 Dec  21  2
2013 Nov  607  2
2013 Oct  239  3
2013 Sep  10  1
2013 Aug  29  3
2013 Jul  202  1
2013 Apr  43  6
2013 Mar  1634  10
2013 Feb  272  4
2013 Jan  244  2
2012 Nov  24  2
2012 Oct  394  10
Tag Cloud
Interested in our services? Still not sure about project details? get a quote