JavaScript syntax: Difference between revisions

Revision as of 15:49, 26 April 2006

Revision as of 11:48, 3 May 2006

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{{"|JavaScript borrows most of its syntax from [[Java_(Programming_language)|Java]], but also inherits from [[Awk]] and [[Perl]], with some indirect influence from [[Self_programming_language|Self]] in its object prototype system.}}

===VariablesScope===

[[Variable]]s in standard JavaScript have no type attached, and any value can be stored in any variable. Variables can be declared with a <code>var</code> statement. These variables are [[Variable#Scope_and_extent|lexically scoped]] and once a variable is declared, it may be accessed anywhere inside the function where it is declared. Variables declared outside any function, and variables used without being declared with 'var', are global (can be used by the entire program).