how to strike through a text using jQuery onclick method code example

Example 1: javscript insert element after another

//insert new Element after some reference Element
function insertAfter(newElement, referenceElement) {
    referenceElement.parentNode.insertBefore(newElement, referenceElement.nextSibling);
}

//example usage
var newElement = document.createElement("div");
    newElement.innerHTML = "my New Div Text";
var myCurrentElement= document.getElementById("myElementID");
    insertAfter(newElement, myCurrentElement);

Example 2: how to call javascript method using selectlist on change in vf page

<apex:selectList size="1" styleclass="chartBlock">
      <apex:selectOptions value="{!dynamiclist}"></apex:selectOptions>
 </apex:selectList>