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jsRemember

Celso Jr

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4.67/5 (4 votes)

11 Aug 2013CPOL1 min read

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Save the form entries to local storage preventing loss of data on browser crashing

Download source - 46.9 KB

Introduction

The jsRemember plugin saves form entries to local storage preventing loss of data on browser crashing. It will work with most common form elements such as Text, Textarea, Password, Select (Combobox), Radio, and Checkbox.

Supported browsers include IE6+, FF2+, Safari4+, Chrome4+, Android 2+, and Opera 10.5+.

In short, if you fill in a form and close the browser, when you come back again, your data will be still there. But when the page is submitted, all stored data is cleared.

It requires jStorage by Andris Reinman to work (included with the download package above).

Using the Code

Using jsRemember is quite easy! Just call it like any other JavaScript code like this:

HTML

<head>
...
<script src="js/json2.js"></script>
<script src="js/jquery-1.10.2.min.js"></script>
<script src="js/jstorage.js"></script>
<script src="js/jsRemember.js"></script> 
... 
</head>

And then, all you need to do is get free writing your HTML forms because jsRemember doesn't depend on an element's name, ID, or CSS class to work. Just call it and you are done!

HTML

...
<form>
    Text field: <input type="text" size="30">
</form>
...

See the online demo page here.

That's it! Hope this saves your time dealing with cookies, view state, or something. Enjoy!

Thanks for your time reading this.

Points of Interest

I have not tested it with the newer HTML5 input types. Anyways, it's easy to extend by using the right jQuery selectors. Please see the jQuery selectors API documentation here.

History

07-26-2013: Original tip.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

Celso Jr

Software Developer

Brazil

MCPS | MCSA | MS | MCSD | Software Engenieer Student | Startups Lover | Small-Cap Stock Investor | Small Shark

Comments and Discussions

Suggestion for improvement

Celso Jr25-Aug-13 8:07

25-Aug-13 8:07

By the way, I'm trying to keep jsRemember as simple as possible. The main idea is "call once and never mind" but I hope improve this plugin even more. So any suggestion for improvement will be greatly appreciated.

Thanks!
CelsoJr

modified 27-Aug-13 19:15pm.

Can some form input be saved after submit, in case of a bad CAPTCHA?

Dan Knauss22-Aug-13 12:09

22-Aug-13 12:09

Is there an easy way to conditionally clear out the local storage or retain some fields but not others?

A successful form submit may come back and need to be redone in cases where a CAPTCHA type of field is required. If the user gets it wrong, they have to redo the whole form

Re: Can some form input be saved after submit, in case of a bad CAPTCHA?

Celso Jr25-Aug-13 8:03

25-Aug-13 8:03

Dan Knauss,
Sorry for the late reply, but...

First of all, thank you for your comment. And...

Nope. jsRemember will clear all form entries even if you try use onsubmit event or the preventdefault function to prevent it, and there isn't a work around.

If you want to retain some fields but not other before submiting, you can try "override" the jQuery change function of your fields. To do that, use some browser LocalStorage viewer tool to know what field is being stored with it specific name+index which you will have to clear.

Talking about validation with CAPTCHA, maybe you can search the internet for an option with Ajax like this[^] (but not exactly this)

Hope this help Wink | ;)

Wink | ;)

Tridip Bhattacharjee29-Jul-13 4:43

Tridip Bhattacharjee

29-Jul-13 4:43

u did not mention how to call jsRemember. please come with sample code. thanks

tbhattacharjee

Celso Jr29-Jul-13 7:05

29-Jul-13 7:05

tbhattacharjee,

download the source files and uncompress it.

open up the notepad and type this:

HTML

<!doctype html>
<html>
<head>

<title>My Form Test</title>

<script src="js/json2.js"></script>
<script src="js/jquery-1.10.2.min.js"></script>
<script src="js/jstorage.js"></script>
<script src="js/jsRemember.js"></script> 

</head>
<body>
<form>
    Text field: <input type="text" size="30"> <br />
	Password field: <input type="password" size="30">
</form>
</body>
</html>

Now, type "myFormTest.html" and save it in the same place of the "index.html" from the source files you downloaded.

This should work for you. Otherwise, let me know if it isn't working.

PS.: It will not work with IE for local files. Only the online ones. But you can open it with other browser if you want as well.

Tk cr, man Wink | ;)

Wink | ;)

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