Code bytes

Jan 17

Character Arrays

/*
Character Arrays

whilst this is a useless example
it demonstrates the use of a string
as a character array
*/

var foo = "this is a string";


for (var i = 0, len = foo.length; i < len; ++i)
    console.log(foo[i]);


/*
Result:
t
h
i
s
 
i
s
 
a
 
s
t
r
i
n
g
*/

Jan 16

Short hand timestamp

/*
Short hand timestamp

As far as I know, this is
the quickest shortest method 
to get the current timestamp
*/
+new Date;

Jan 14

Shortest conditional statement

/*
Short hand conditional

This is similar to Optional constructor arguments
utilising right hand evaluation if left hand results 
in boolean true
*/

var foo = 2, bar;
foo == 2 && (bar = 3);


/*
Can also be used to call functions conditonally
*/
foo == 2 && baz();

Jan 13

Object properties to Array

/*
Collecting object properties into
an Array
*/

var i = 0, arr = [];
var foo = {bar: "value bar", baz: "value baz"};

for(arr[i++] in foo)


/* 
Result:
arr == ["bar", "baz"] 
*/

Jan 10

Optional constructor arguments

/*
Setting object parameters 
optionally in the constructor

bar is required, baz is optional


Note:
false or 0 will result in no value being 
used. Better to use conditions in this case.
*/

function foo(bar, baz) {
    this.bar = bar;
    baz && (this.baz = baz);
}

foo.prototype = {
    bar: "",
    baz: ""
};

Function arguments with defaults

/*
Function with defaulted arguments
bar is required, baz is optional with a default


Note:
false or 0 will result in the default value being 
used. Better to use conditions in this case.
*/
function foo(bar, baz) {
    baz = baz || 'default value';
}