Javascript for PHP developers: Part I: Static Class

Here is how I would code a static class in Javascript by borrowing from my PHP experience:

Javascript

PHP

<br />// Function declaration<br />// Serves as "static class" declaration<br />// Will be attached to the 'window' object<br />// by default.<br />JLD = function() {<br /> // Static variable<br /> // Only accessible within 'JLD' <br /> var var1 = 666;<br />}<br /> <br />// Static Function declaration<br />// under the "static class" JLD<br />// Typeof JLD.fnc1 = "function"<br />JLD.fnc1 = function() {<br /><br /> // can't access var1 inside function JLD<br /> alert( "JLD.fnc1 called. var1= " + JLD.var1 );<br />}<br /><br />// 'fields' of JLD<br />JLD.var2 = 777; //typeof JLD.var2 = "number"<br />JLD.var3 = "some string"; //typeof JLD.var3 = "string"<br /><br />// Static Function declaration<br />// under the "class" JLD<br />JLD.fnc2 = function() {<br /> <br /> // can access var2 though<br /> alert( "JLD.fnc2 called. var2= " + JLD.var2 );<br />}<br /><br />

<br /> class JLD {<br /> <br /> function JLD() {<br /> var $var1 = 666;<br /> }<br /><br /> function fnc1() {<br /> // of course can't access $var1<br /> }<br /><br /> static $var2 = 777;<br /> static $var3 = "some string";<br /><br /> function fnc2() {<br /> // can access $var2 & $var3<br /> echo self::$var2;<br /> echo self::$var3;<br /> }<br />}<br />