31. März 2017

Javascript Life Saver of the Week – uniqueID

Simple way to make sure you are assigning unique IDs to a series of elements.

var seedNum = 1;
function uniqueID(myKey, seedNum){
     var key = myKey + seedNum;
     if (document.getElementById(key) != null){
         return uniqueID(myKey, ++seedNum);
     }
     else{
         return key;
     }
 }

var seedNum = 1;

function uniqueID(myKey, seedNum){

var key = myKey + seedNum;

if (document.getElementById(key) != null){

return uniqueID(myKey, ++seedNum);

}

else{

return key;

}

USAGE

uniqueID('state-',seedNum);

1	uniqueID('state-',seedNum);

If you want to do IETF RFC-4122 compliant Universally Unique Identifiers (UUID), checkout Pure UUID.

Seems to be all about unique IDs this week ;)

Enjoy coding…

31. März 2017

PHP Life Saver of the Week – preg_replace_callback

I am currently building a custom slides / template builder for a project, with a lot of moving parts and dynamic logic.

As there are repeating patterns within the slides, each pattern and its logic needs to be neatly separated. As the slides can be reordered and dropzones can be changed, I need to make sure logic doesn’t break and IDs get updated.

Before reassembling all templates, I am making sure that IDs match the slide and dropzone using a preg_replace_callback

One of the patterns is a simple tab setup, each has its unique ID defined like vl-tab_U1_S1_D1.

The function below passes the found matches through to the anonymous callback function in preg_replace_callback and offers outside data to the function using use($foo). The $dropzone object holds the current unit, slide and dropzone of the pattern, which can be used to replace the current ID with the correct one.

$dropzone->region_content = preg_replace_callback('/vl-tab_[^"]++/',function($hit) use($dropzone){
	$oldID = explode("_",$hit[0]);
	$newID = array(
		"vl-tab", 
		"U".$oldID[1], 
		"S".$dropzone->slide,
		"D".$dropzone->dropzone
	);	
	return implode("_", $newID);
							
},$dropzone->region_content);

$dropzone->region_content = preg_replace_callback('/vl-tab_[^"]++/',function($hit) use($dropzone){

$oldID = explode("_",$hit[0]);

$newID = array(

"vl-tab",

"U".$oldID[1],

"S".$dropzone->slide,

"D".$dropzone->dropzone

);

return implode("_", $newID);

},$dropzone->region_content);

Really nice combo to make magic happen ;)

BTW here a nice website to testdrive and tweak your Regex : https://regex101.com/

Enjoy coding …

29. März 2017

Smart CSS viewer for Chrome – CSS Peeper

Inspect styles in a simple, well-organized & beautiful way with this Chrome extension. You can select any object to get more specific information about them. Also a nice way to browse color palettes of websites you visit.

CSSPeeper

24. März 2017

Datamuse … a word-finding query engine for developers

“The Datamuse API is a word-finding query engine for developers. You can use it in your apps to find words that match a given set of constraints and that are likely in a given context. You can specify a wide variety of constraints on meaning, spelling, sound, and vocabulary in your queries, in any combination.”

words with a meaning similar to ringing in the ears
/words?ml=ringing+in+the+ears

Datamuse API

24. März 2017

Do Literature no Lorem Ipsums

Read passages from literature’s greatest such as H.G. Wells, instead the old boring Lorem Ipsums ;)

Fillerati

24. März 2017

Pirate IPSUM

The Lorem Ipsum Generator for all us pirates …ARG!

Pirateipsum.me

15. März 2017

DOM-to-Image … turn a DOM node into an image

dom-to-image is a library which can turn an arbitrary DOM node into a vector (SVG) or raster (PNG or JPEG) image, written in JavaScript.

var node = document.getElementById('my-node');

domtoimage.toPng(node)
    .then(function (dataUrl) {
        var img = new Image();
        img.src = dataUrl;
        document.body.appendChild(img);
    })
    .catch(function (error) {
        console.error('oops, something went wrong!', error);
    });