javascript

CHAPTER 4 ■ CONTROLLING FLOW
120
Figure 4–9. Culling elements containing "" or undefined from looseLeafTea
Replacing Break with Return in a Function
Now just as you can abort a switch with return rather than break whenever the switch appears in a
function, you can abort a loop (while, do while, for, for in) with return rather than break whenever the
loop appears in a function. So, click Clear in both Firebug panels, and let’s rewrite our while loop inside
a function, replacing break with return:
var looseLeafTea = [
"Ghillidary",
"Kenilworth",
"Milima",
"Keemun",
"Boisahabi",
"Manohari",
"Borpatra",
"Lukwah",
"Khongea"
];
function findTea(tea) {
var i = 0;
while (i < looseLeafTea.length) {
if (looseLeafTea[i] === tea) {
return "cheery";