efw.contains

The contains function is established to check whether a key has been registered in efw.

Sample

if (!efw.contains("PDFLib")){
	load(_eventfolder+"/pdf-lib.min.js");
	load(_eventfolder+"/fontkit.umd.min.js");
	efw.register("PDFLib");
	efw.register("fontkit");
};

API

Calling	Returning
`efw. contains ( key )`	`boolean`

Parameters	Type	Description
`key`	`String`	The name of the global variable to be registered.