Created
May 24, 2012 19:00
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Functional Javascript Programming
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var util = (function( getElementById, | |
createElement, | |
argumentsToArray, | |
innerHTML, | |
style, | |
inside, | |
after, | |
undefined ){ | |
var cache = function( key, value ){ | |
var rtn, func = arguments.callee; | |
rtn = func._cache = func._cache || {}; | |
if( arguments.length < 1 ) { rtn = func._cache; } | |
else if( arguments.length < 2 ) { rtn = func._cache[ key ]; } | |
else if( arguments.length > 1 ) { func._cache[ key ] = value; } | |
return rtn; | |
}, chain = function(){ | |
var scope, func, args = argumentsToArray( arguments ); | |
scope = args.shift(); | |
func = args.shift(); | |
if (func) { func.apply( scope, args ); } | |
return scope; | |
}, map = function( obj, func ){ | |
for( var i in obj ){ | |
if ( obj.hasOwnProperty(i) ) { | |
func.apply( this, [ i, obj[i] ] ); | |
} | |
} | |
}; | |
return { | |
cache: cache, | |
id: function( id ){ | |
return chain( this, function(){ | |
cache( 'id', id ); | |
cache( 'target', getElementById( id ) ); | |
}); | |
}, | |
target: function( target ){ | |
return chain(this, function( type, func ){ | |
if(type==='function') { | |
func.apply( this, [ cache('target') ] ); | |
} else { | |
cache( 'target', target ); | |
} | |
}, typeof( target ), target); | |
}, | |
content:function( content ){ | |
return chain(this, function(){ | |
cache( 'content', content ); | |
innerHTML( cache( 'target' ), content ); | |
}); | |
}, | |
css:function( css ){ | |
return chain( this, function(){ | |
cache( 'css', css ); | |
map( css, function( i, item ){ | |
style( cache( 'target' ), i, css[i] ); | |
}); | |
}); | |
}, | |
container: function( container ){ | |
return chain( this, function(){ | |
cache( 'container', container ); | |
}); | |
}, | |
html: function( html ){ | |
return chain( this, function(){ | |
cache( 'html', html ); | |
}); | |
}, | |
insert: function( insert ){ | |
return chain( this, function(){ | |
if( insert != null ){ cache( 'insert', insert ) }; | |
cache( 'element', createElement( cache( 'container' ) ) ); | |
innerHTML( cache( 'element' ), cache( 'html' ) ); | |
switch ( cache( 'insert' ) ) { | |
case 'inside': | |
inside( cache( 'target' ), cache( 'element' ) ); | |
break; | |
case 'after': | |
after( cache( 'target' ), cache( 'element' ) ); | |
break; | |
} | |
cache( 'target' , cache( 'element' )); | |
}); | |
}, | |
style: function( style ){ | |
return chain( this, function(){ | |
cache( 'style', style ); | |
}); | |
}, | |
format: function( format ){ | |
return chain( this, function(){ | |
cache( 'format', format ); | |
style( cache( 'target' ), cache( 'style' ), format ); | |
}); | |
} | |
}; | |
}( function( id ){ return document.getElementById( id ); }, //getElementById | |
function( tag ){ return document.createElement( tag ); }, //createElement | |
function( arguments ){ return Array.prototype.slice.apply( arguments ); }, //argumentsToArray | |
function( target, html ){ target.innerHTML = html; }, //innerHTML | |
function( target, style, format ){ target.style[style] = format; }, //style | |
function( target, node ){ target.appendChild( node ); }, //inside | |
function( target, node ){ target.parentNode.insertBefore( node, target.nextSibling ); } )); //after | |
util.id('lga').content('<div id="myStuff"></div>').id('myStuff').css({'font-size':'100px','font-family':'serif','text-align':'center'}).container('span').html('B').insert('inside').style('color').format('blue').html('o').insert('after').format('red').insert().format('orange').html('g').insert().format('blue').html('i').insert().format('green').html('e').insert().format('red').id('gbqfq').target(function(t){t.value='all night long'}); |
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