If a span element like below has to be read in jquery then .html() function comes to the rescue .
//in the jsf code
// in html
in the script read the span value using .html() function .
If it is a DOM element it can be read using .get() function
var max = jQuery(".resOutputMaxTeor").get(0) ;
//in the jsf code
<h:outputText value="100.12" styleClass="resOutputMaxTeor">
// in html
<span class="resOutputMaxTeor">100.12</span>
var max = jQuery(".resOutputMaxTeor").html();
If it is a DOM element it can be read using .get() function
var max = jQuery(".resOutputMaxTeor").get(0) ;