I'm pretty new to jquery so am not too knowledgeable on it, I asked a question on using jquery to change the class of certain elements to specific classes if another certain element is present 

It seems that an event listener is needed for this, I have a basic understanding of event handlers but this is generally to do with actions such as click etc what I need however is one to Id if certain elements innerhtml has a text value (e.g. 'go') to run a function on near by elements (example below).

This is for a blog, which will use certain tags to change layout of posts, below there is some repeated html to illustrate how the targetting needs to work

classes are spans (using bootstrap)

html

    <div class="container">

    <div  class="span6">

    </div>

    

    <div class="span6">

    <a class="taglink">text</a>

    </div>

    </div>

    

    <div class="container">

    <div class="span6">

    </div>

    

    <div class="span6">

    <a class="taglink">text</a>

    </div>

    </div>

What I'd like is for a & b's and *only* a & b's classes to change from span 6 to 12 when the text inside one of the a classes 'taglink' that is *within* the same container div is equal to 'go'.

This is so that only 'go' tag will affect only 'a' and 'b' divs classes and only that of a and b within its own 'container' div.