gistfile1.txt

function asdf(a,b) {
	
	for (var i=0; i < a.length; i++) {
		
		if ( a[i] === b ) {
			return i;
		};	
		
		
	};
	
	return -1;
};


var ar;
ar=[];

ar= ["test", 12, 12, 1.5, 17];

result = asdf (ar,100);

alert (result);