JavaScript - Revision history

ChickenHacker: add category

2019-08-29T01:34:47Z

add category

DavidB4-bot: /* External links */clean up

2016-06-23T15:06:18Z

External links: clean up

KevinPas at 14:17, October 15, 2013

2013-10-15T14:17:57Z

JlHawkwell: Added example code. Taken from one of my own projects where double-posting was a real problem.

2010-08-02T19:10:47Z

Added example code. Taken from one of my own projects where double-posting was a real problem.

JlHawkwell: /* Arrays */ minor grammatical correction

2010-08-02T18:54:06Z

Arrays: minor grammatical correction

Ed Poor: JavaScript has access to the content of HTML documents

2010-02-08T13:37:48Z

JavaScript has access to the content of HTML documents

Ed Poor: arrays and hashtables

2010-02-08T13:31:28Z

arrays and hashtables

Ed Poor: used only for client-side programming

2010-02-08T13:29:29Z

used only for client-side programming

Ed Poor: Visibility of class members

2009-12-17T16:15:39Z

Visibility of class members

Ed Poor: public and private variable

2009-12-17T16:14:50Z

public and private variable

@@ Line 53: / Line 53: @@
 ==External links==
 * [http://www.webteacher.com/javascript/ Javascript Tutorial]
-[[Category:Scripting Languages]]
+[[Category:Scripting Languages]][[Category:Internet]]

@@ Line 51: / Line 51: @@
 <references />
-==External Links==
+==External links==
-[http://www.webteacher.com/javascript/ Javascript Tutorial]
+* [http://www.webteacher.com/javascript/ Javascript Tutorial]
 [[Category:Scripting Languages]]

← Older revision		Revision as of 14:17, October 15, 2013
Line 1:		Line 1:
−	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used ~~only~~ for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].	+	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used mainly<ref>For server side and desktop usage see http://vertx.io/ and http://nodejs.org/</ref> for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].
	In a [[web browser]], JavaScript has access to the content of [[HTML]] documents.<ref>David Flanagan, ''Javascript: The definitive guide'', page 6</ref>		In a [[web browser]], JavaScript has access to the content of [[HTML]] documents.<ref>David Flanagan, ''Javascript: The definitive guide'', page 6</ref>

← Older revision		Revision as of 19:10, August 2, 2010
Line 16:		Line 16:
	Within class functions, use this to get a public variable, and '''omit''' to get a private variable!		Within class functions, use this to get a public variable, and '''omit''' to get a private variable!

		+	== Example Code ==
		+	The following example can be used to disable a form button, for example, to prevent double-posting on a forum.
		+	<pre>// Following code licensed CC-SA
		+
		+	function ref(object)
		+	{
		+	if (document.getElementById) { return document.getElementById(object); }
		+	else if (document.all) { return eval('document.all.' + object); }
		+	else { return false; }
		+	}
		+
		+
		+	function setButton(btnObject)
		+	{
		+	if ( document.post.btnName && document.post.btnValue )
		+	{
		+	document.post.btnName.value = btnObject.name;
		+	document.post.btnValue.value = btnObject.value;
		+	}
		+	else if ( document.all.btnName && document.all.btnValue )
		+	{
		+	document.all.btnName.value = btnObject.name;
		+	document.all.btnValue.value = btnObject.value;
		+	}
		+
		+	var postForm = ref('post');
		+	postForm.submit();
		+	return true;
		+	}</pre>
		+	To make use of this function, add it to the JavaScript used by your form, and then add the following to the button you wish to disable:
		+	<pre>onClick="setButton(this);"</pre>

	==Notes==		==Notes==

@@ Line 5: / Line 5: @@
 JavaScript doesn't have the same kind of arrays as [[Java]]; this is one of the differences between the two languages.
-In JavaScript, the standard array notation is used, but internally data are stored in a [[hash table]].
+In JavaScript, the standard array notation is used, but internally data is stored in a [[hash table]].
 ==Visibility of class members==

← Older revision		Revision as of 13:37, February 8, 2010
Line 1:		Line 1:
	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used only for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].		'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used only for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].
		+	In a [[web browser]], JavaScript has access to the content of [[HTML]] documents.<ref>David Flanagan, ''Javascript: The definitive guide'', page 6</ref>

	==Arrays==		==Arrays==

← Older revision		Revision as of 13:31, February 8, 2010
Line 1:		Line 1:
	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used only for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].		'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used only for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].
		+
		+	==Arrays==
		+
		+	JavaScript doesn't have the same kind of arrays as [[Java]]; this is one of the differences between the two languages.
		+	In JavaScript, the standard array notation is used, but internally data are stored in a [[hash table]].

	==Visibility of class members==		==Visibility of class members==

← Older revision		Revision as of 13:29, February 8, 2010
Line 1:		Line 1:
−	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref>	+	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref> It is used only for [[client-side]] programming; for a good [[server-side]] language, see [[PHP]].

	==Visibility of class members==		==Visibility of class members==

@@ Line 1: / Line 1: @@
 '''JavaScript''' is a [[programming language]] used for [[website|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref>
-==Lessons in scope==
+==Visibility of class members==
 There are two sets of variables associated with any object you define in JavaScript.
 The first set of variables defined with the <code>this</code> keyword, are all public. The second set of variables, defined with the <code>var</code> keyword, are private. You can even use the same name for a public and private variable, and JavaScript can tell them apart.

← Older revision		Revision as of 16:14, December 17, 2009
Line 1:		Line 1:
	'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref>		'''JavaScript''' is a [[programming language]] used for [[website\|web]] development. While it is primarily used as a scripting language, it has some [[object-oriented]] features.<ref>[http://mckoss.com/jscript/object.htm Object Oriented Programming in JavaScript] - Mike Koss</ref>
		+
		+	==Lessons in scope==
		+	There are two sets of variables associated with any object you define in JavaScript.
		+	The first set of variables defined with the <code>this</code> keyword, are all public. The second set of variables, defined with the <code>var</code> keyword, are private. You can even use the same name for a public and private variable, and JavaScript can tell them apart.
		+
		+	===Accessing public and private variables===
		+	Use regular dot notation to get the public variables of an object
		+	* shape.size
		+	Within class functions, use this to get a public variable, and '''omit''' to get a private variable!
		+

	==Notes==		==Notes==