Script to count how many nodes are inside a parent element

js-element-node-counter.js

// Function that runs and counts children inside a parent
function getCount(parent, getChildrensChildren){
    var relevantChildren = 0;
    var children = parent.childNodes.length;
    for(var i=0; i < children; i++){
        if(parent.childNodes[i].nodeType != 3){
            if(getChildrensChildren)
                relevantChildren += getCount(parent.childNodes[i],true);
            relevantChildren++;
        }
    }
    return relevantChildren;
}


// template to use to check a selector and it's children
var element = document.querySelector("element");
alert(getCount(element, false)); // Simply one level
alert(getCount(element, true)); // Get all child node count


// Example: check body dom nodes
var element = document.querySelector("body");
alert(getCount(element, false)); // Simply one level
alert(getCount(element, true)); // Get all child node count


// Example: check parent class for it's children
var element = document.querySelector(".exampleclass");
alert(getCount(element, false)); // Simply one level
alert(getCount(element, true)); // Get all child node count