Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    function fn1(arg1, arg2, arg3) {
        switch(arguments.length) {
            case 2:
                arg3 = 'sample';
            case 1:
                arg2 = 310;
            case 0:
                arg1 = /five/;
        }
    }
    
    function fn2(arg1, arg2, arg3) {
        if(arg1 === undefined) arg1 = /five/;
        if(arg2 === undefined) arg2 = 310;
        if(arg3 === undefined) arg3 = 'sample'
    }
    
    function fn3(arg1, arg2, arg3) {
        if(typeof arg1 === 'undefined') arg1 = /five/;
        if(typeof arg2 === 'undefined') arg2 = 310;
        if(typeof arg3 === 'undefined') arg3 = 'sample'
    }
    
    function fn4(arg1, arg2, arg3) {
        if(arguments.length === 0) arg1 = /five/;
        if(arguments.length <= 1) arg2 = 310;
        if(arguments.length <= 2) arg3 = 'sample'
    }
  };
</script>

Test runner

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Java applet disabled.

fn1();
fn1('');
fn1('', 5);
 

fn2();
fn2('');
fn2('', 5);
 

fn3();
fn3('');
fn3('', 5);
 

fn4();
fn4('');
fn4('', 5);
 

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 7th February 2013
• Revision 2: published on 7th February 2013

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