Alternative to the "switch" Statement

Question

I do not want to use Switch in my code, so I'm looking for some alternative

Example with Switch:

function write(what) {    switch(what) {      case 'Blue':       alert ('Blue');     break;      ...      case 'Red':       alert ('Red');     break;    }  } 

Example without Switch:

colors = [];  colors['Blue'] = function() { alert('Blue'); }; colors['Red'] = function() { alert('Red'); };   function write(what) {    colors[what]();  } 

My questions are:

1. Do you know any other alternatives?
2. Is this best solution?

Answer 1

I have only a note about your second approach, you shouldn't use an Array to store non-numeric indexes (that you would call in other languages an associative array).

You should use a simple Object.

Also, you might want to check if the what argument passed to your write function exists as a property of your colors object and see if it's a function, so you can invoke it without having run-time errors:

var colors = {};  colors['Blue'] = function() { alert('Blue'); }; colors['Red'] = function() { alert('Red'); };   function write(what) {   if (typeof colors[what] == 'function') {     colors[what]();     return;   }   // not a function, default case   // ... }