Question

My app pulls images from instagram, and I am wondering how I can use JS to cycle through the document and simply look for every item that has a # hashtag and append a URL to it.

i.e.

My instagram photo contains the following tags #instagram #photo #tags

and the result ends up looking like

My instagram photo contains the following tags #instagram #photo #tags

Answer 1

Try this

var x = "My instagram photo contains the following tags #instagram #photo #tags";

var split = x.split(" ");
for(var i=0; i< split.length; i++){
    if(split[i].indexOf('#') >= 0){
        split[i] = '<a href=\"http://myapp.com/tag/'+split[i].substring(1)+'\">'+split[i]+'</a>';
    }
}
console.log(split.join(" "));

Here is fiddle
http://jsfiddle.net/9XQBC/