caja-safe roots javascript utils
var foreach = function(collection, callback){//tested: ff 3 mac
if(collection.length){//array or node list
for(var i = 0; i < collection.length; i++){
callback(i, collection[i]);
}
}else if(collection.hasOwnProperty){
for(var key in collection){
if(collection.hasOwnProperty(key)){
callback(key, collection[key]);
}
}
}else{
throw('each() error: collection (' + collection + ') is neither an array nor an object');
}
},
getElementsByClassName = function(elements, className){
var nodes = [];
foreach(elements, function(i,element){
if(className === element.className){
nodes.push(element);
}
});
return nodes;
},
hasClass = function(node, className){//tested: ff 2/3 win/mac, ie 6/7 win
return new RegExp('[\b]*' + className + '[\b]*').test(node.className);
},
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