CrossBrowdy - Examples


Cookies and local storage

This is an example managing cookies and local storage:


<!DOCTYPE html>
		<!-- This file belongs to a example, made by Joan Alba Maldonado. -->
		<meta http-equiv="content-type" content="text/html; charset=utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
		<link rel="canonical" href="" />
		<title>Data: Cookies and local storage - Example</title>
		<!-- Loads the needed CSS files: -->
		<link rel="stylesheet" type="text/css" href="main.css" />
		<!-- Loads CrossBrowdy.js (main file): -->
		<!-- Note: it is recommended to download CrossBrowdy instead of hotlinking the online version. This is just for the example! -->
		<script src="" type="text/javascript" language="javascript"></script><!-- "type" and "language" parameters for legacy clients. -->
		<!-- Loads the other needed script files: -->
		<script src="main.js" type="text/javascript" language="javascript"></script>
		<br />
		<span id="container"></span>
		<br />
		<!-- The "CB_console" element will be used automatically in the case that the client does not support console: -->
		<div id="CB_console" style="display:none; visibility:hidden; overflow:scroll;">
			<span style="font-weight:bold;">Console:</span><br />
		<div id="crossbrowdy_info"><a href="/guides#examples" target="_blank"></a> example</div>


/* This file belongs to a example, made by Joan Alba Maldonado. */

body { background-color:#aaddee; word-wrap:break-word; }
#crossbrowdy_info { position:fixed; bottom:2px; right:2px; }
#crossbrowdy_info a { color:#00aadd; }
#crossbrowdy_info a:hover { color:#0033aa; }
span { color:#aa0000; }


/* This file belongs to a example, made by Joan Alba Maldonado. */

CB_init(main); //It will call the "main" function when ready.

//This function will be called when CrossBrowdy is ready:
function main()
	//Sets data in local storage (uses Web Storage API or fallbacks automatically to localStorage or cookies otherwise):
	CB_setDatum("my_index", "my_value"); //Stores data using the best storage method automatically.
	CB_setDatum("my_index_2", "my_value_2", undefined, undefined, true); //Stores data forcing it to use cookies (without 'days' nor 'path set).
	CB_setDatum("my_index_3", "my_value_3", 20, "/subfolder"); //Stores data using the best storage method automatically. If it finally uses cookies, they will last 20 days and use "/subfolder" path (otherwise, these parameter will be ignored).
	CB_setDatum("my_index_4", "my_value_4", 30, undefined, true); //Stores data forcing it to use cookies. They will last 30 days.
	CB_setDatum("my_index_5", "my_value_5", 25, "/subfolder", true); //Stores data forcing it to use cookies. They will last 30 days and use the "/subfolder" path.

	//Recovers the data set previously. If not found through Web Storage API or localStorage, it will search in the cookies:
	var myDatum = CB_getDatum("my_index"); //Returns "my_value".
	var myDatum_2 = CB_getDatum("my_index_2"); //Returns "my_value_2".
	var myDatum_3 = CB_getDatum("my_index_3"); //Returns "my_value_3" (if cookies were finally used, only if we are in "/subfolder").
	var myDatum_4 = CB_getDatum("my_index_4"); //Returns "my_value_4".
	var myDatum_5 = CB_getDatum("my_index_5"); //Returns "my_value_5" (only if we are in "/subfolder").
	if (myDatum_3) { outputExpected = "my_valuemy_value_2my_value_3my_value_4" + null; } //If cookies where not used for 'myDatum_3'.
	else { outputExpected = "my_valuemy_value_2" + null + "my_value_4" + null; }
	outputReal = myDatum + myDatum_2 + myDatum_3 + myDatum_4 + myDatum_5;
	checkOutput(outputExpected, outputReal);

	//Sets data in a cookie:
	CB_setCookie("my_index_6", "my_value_6"); //Stores the data in a cookie (without 'days' nor 'path' set).
	CB_setCookie("my_index_7", "my_value_7", 365); //Stores the data in a cookie (using 365 days storage).
	CB_setCookie("my_index_8", "my_value_8", 5, "/subfolder"); //Stores the data in a cookie (using 5 days storage and "/subfolder" path).

	//Recovers the data set previously, from the cookies:
	var myDatum_6 = CB_getCookie("my_index_6"); //Returns "my_value_6".
	var myDatum_7 = CB_getCookie("my_index_7"); //Returns "my_value_7".
	var myDatum_8 = CB_getCookie("my_index_8"); //Returns "my_value_8" (only if we are in "/subfolder").
	outputExpected = "my_value_6my_value_7" + null;
	outputReal = myDatum_6 + myDatum_7 + myDatum_8;
	checkOutput(outputExpected, outputReal);

//Checks expected output compared with real one and prints the result:
function checkOutput(outputExpected, outputReal)
	printMessage("* Expected output:\n" + outputExpected + "\n* Real output:\n" + outputReal + "\n*** " + ((outputExpected === outputReal) ? "[CORRECT!]" : "[FAILED!]") + " ***");

//Prints the desired message:
function printMessage(message)
	message = message + "\n\n";
	message = //Escapes some characters for HTML.
			message.replace(CB_regularExpressionString("&", true, true), "&amp;")
			.replace(CB_regularExpressionString("<br />", true, true), "&lt;br /&gt;")
			.replace(CB_regularExpressionString(" ", true, true), "&nbsp;")
	CB_Elements.appendContentById("container", message);

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You can check the Guides & Tutorials category as well as the API documentation in the case you need more information.

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