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letterer.js
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letterer.js
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function letterer(element){
if( !document.createTreeWalker ) return false;
var letter, letterElm, parent, wordElm, letters, walker, node,
supportsTrim = String.prototype.trim;
walker = document.createTreeWalker(element, NodeFilter.SHOW_TEXT, null, false);
while( node = walker.nextNode() ){
if( node.nodeType == 3 ){
if( supportsTrim ? node.nodeValue.trim() : node.nodeValue ){
letters = node.nodeValue.split('').reverse();
wordElm = document.createElement('word');
node.nodeValue = '';
parent = node.parentNode;
// do this for every letter in this text-node
while( letter = letters.pop() ){
letterElm = document.createElement('letter');
letterElm.className = 'initial'; // add a class for transition purposes
letterElm.innerHTML = letter;
// check for a space
if( letter == ' ' ){
parent.insertBefore( wordElm, node );
wordElm = document.createElement('word');
parent.insertBefore( letterElm, node );
}
else
wordElm.appendChild(letterElm);
}
parent.insertBefore( wordElm, node );
}
}
}
}