Discussion on: Generate a CSS selector path of a DOM element.

function generateSelector(context) {
    let index, pathSelector, localName;

    if (context == "null") throw "not an dom reference";
    // call getIndex function
    index = getIndex(context);

    while (context.tagName) {
        // selector path

        const className = context.className
        const idName = context.id

        pathSelector = context.localName + 
                        ( className ? `.${className}` : "") + 
                        ( idName ? `#${idName}` : "") +
                        (pathSelector ? ">" + pathSelector : "");

        context = context.parentNode;
    }
    // selector path for nth of type
    pathSelector = pathSelector + `:nth-of-type(${index})`;
    return pathSelector;
}

// get index for nth of type element
function getIndex(node) {
    let i = 1;
    let tagName = node.tagName;

    while (node.previousSibling) {
    node = node.previousSibling;
    if (
        node.nodeType === 1 &&
        tagName.toLowerCase() == node.tagName.toLowerCase()
    ) {
        i++;
    }
    }
    return i;
}

// load document
document.addEventListener("DOMContentLoaded", () => {
    // click on element to get output
    document.body.addEventListener("click", (e) => {
        // let selector = document.querySelector(".selector");
        // selector output
        let output = generateSelector(e.target);

        // selector.innerHTML = `<strong>Selector:</strong> ${output}`;

        // element that you select
        let element = document.querySelector(output);
        console.log(output);                
        console.log("Element:", element);                
    });
});