===

===(strict equal operator)

“Tests two expressions for equality; the strict equality (===)operator performs in the same way as the equality (==) operator, except that data types are not converted. The result is true if both expressions, including their data types, are equal. ”

Usage:

var tfrmt:TextFormat = new TextFormat();

var attr:String = “font”;

trace( tfrmt[attr]==null); //”true”

trace( tfrmt[attr]==undefined); //”true”

trace( tfrmt[attr]===null); //”true”

trace( tfrmt[attr]===undefined); //”false”

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