"Yes", but it won't do what you expect.
The expression used for the switch is evaluated once - in this case contains evaluates to true/false as the result (e.g. switch(true) or switch(false)), not a string that can be matched in a case.
As such, the above approach won't work. Unless this pattern is much larger/extensible, just use simple if/else-if statements.
var loc = ..if (loc.contains("google")) { ..} else if (loc.contains("yahoo")) { ..} else { ..}However, consider if there was a classify function that returned "google" or "yahoo", etc, perhaps using conditionals as above. Then it could be used as so, but is likely overkill in this case.
switch (classify(loc)) { case "google": .. case "yahoo": .. ..}While the above discusses such in JavaScript, Ruby and Scala (and likely others) provide mechanisms to handle some more "advanced switch" usage.