jQuery Simple Example

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<div class="content" style="display:none">Content1 goes here</div>
    <div class="content" style="display:none">Content1 goes here too</div>
    <div class="content" style="display:none">Content1 goes here again</div>
    <div class="content" style="display:none">extra node</div>

JavaScript

var nodes = $(".content");
var filterarray = ["Content1", "goes"];
var total = 0;

for(var i = 0; i < nodes.length; i++){
    var current = $(nodes[i]);
    var text = current.text();
    var res = filterarray.reduce(function(p, a){
        return p && (text.indexOf(a) != -1);
    }, true);
    if(res) total++;
}

console.log(total)