Performance of if-else, switch or map based conditioning

I was wondering about the performances of the following implementations of conditional structs in javascript.

Method 1:

 if(id==="camelCase"){
    window.location.href = "http://www.thecamelcase.com";
}else if (id==="jsFiddle"){
    window.location.href = "http://jsfiddle.net/";
}else if (id==="cricInfo"){
    window.location.href = "http://cricinfo.com/";
}else if (id==="apple"){
    window.location.href = "http://apple.com/";
}else if (id==="yahoo"){
    window.location.href = "http://yahoo.com/";
}           

Method 2:

switch (id) {
case 'camelCase':
    window.location.href = "http://www.thecamelcase.com";
    break;
case 'jsFiddle':
    window.location.href = "http://www.jsfiddle.net";
    break;
case 'cricInfo':
    window.location.href = "http://www.cricinfo.com";
    break;
case 'apple':
    window.location.href = "http://www.apple.com";
    break;
case 'yahoo':
    window.location.href = "http://www.yahoo.com";
    break;

}

Method 3

var hrefMap = {
camelCase : "http://www.thecamelcase.com",
jsFiddle: "http://www.jsfiddle.net",
cricInfo: "http://www.cricinfo.com",
apple: "http://www.apple.com",
yahoo: "http://www.yahoo.com"
};
window.location.href = hrefMap[id];

Method 4

window.location.href = {
    camelCase : "http://www.thecamelcase.com",
    jsFiddle: "http://www.jsfiddle.net",
    cricInfo: "http://www.cricinfo.com",
    apple: "http://www.apple.com",
    yahoo: "http://www.yahoo.com"
}[id];

Probably Method 3 and 4 might have almost the same performance but just posting to confirm.

Answer

According to this JSBen.ch test, the switch setup is the fastest out of the provided methods (Firefox 8.0 and Chromium 15).

Methods 3 and 4 are slightly less fast, but it’s hardly noticeable. Clearly, the if-elseif method is significantly slower (FireFox 8.0).

The same test in Chromium 15 does not show significant differences in performance between these methods. In fact, the if-elseif method seems to be the fastest method in Chrome.

Update

I have run the test cases again, with 10 additional entries. The hrefmap (methods 3 and 4) show a better performance.

If you want to implement the compare method in a function, method 3 would definitely win: Store the map in a variable, and refer to this variable at a later point, instead of reconstructing it.