getElemtnByText.js

Array.prototype.lastOrDefault = function(cond, defaultValue) {
    if (!this.length)
        return defaultValue;
    if (!cond)
        return this[this.length - 1];

    for (var i = this.length - 1; i >= 0; --i) {
        if (cond(this[i]))
            return this[i];
    }

    return defaultValue;
}
;

try {
    if (!window.lastElems)
        window.lastElems = new Set();
    if (!window.lastFullLength)
        window.lastFullLength = 0;

    function findLinkByTextCached(text) {
        let currElems = [...document.querySelectorAll("body *")];
        if (lastFullLength !== currElems.length) {
            console.log("save", lastFullLength, currElems.length, document.querySelectorAll(`[class*="item_"]`).length);
            lastFullLength = currElems.length;
            for (let e of currElems) {
                if (!window.lastElems.has(e) && e.offsetParent && e.innerText && !["STYLE", "SCRIPT"].includes(e?.tagName))
                    window.lastElems.add(e);
                if (!e.offsetParent)
                    window.lastElems.delete(e);
            }
        }
        const elemWithText = [...window.lastElems.values()].lastOrDefault((e)=>e.innerText.includes(text));
        return elemWithText;
    }

    function findElemByTextDirect(text) {
        return [...document.querySelectorAll("body *")].filter((e)=>e.offsetParent && e.innerText && !["STYLE", "SCRIPT"].includes(e?.tagName)).filter((e)=>e.innerText.includes(text)).splice(-1)[0];
    }

    function findElemByTextXPath(text) {
        const xPath = `//*[text()[contains(.,'${text}')] and not(self::script or self::style)]`;
        const it = document.evaluate(xPath, document, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
        
        // get the last item of the iterator
        let elem = null;
        let curElem = it.iterateNext()
        while (curElem !== null) {
            elem = curElem;
            curElem = it.iterateNext();
        }
        return elem;
    }

    console.time("findLinkByTextCached");
    console.log(findLinkByTextCached("Growth"));
    console.timeEnd("findLinkByTextCached");

    console.time("findElemByTextDirect");
    console.log(findElemByTextDirect("Growth"));
    console.timeEnd("findElemByTextDirect");

    console.time("findElemByTextXPath");
    console.log(findElemByTextXPath("Growth"));
    console.timeEnd("findElemByTextXPath");
} catch (e) {
    console.log(e);
}