nodelist-foreach-polyfill/test.html

Simple polyfill for the NodeList.forEach method.

<div class="test-item">
    Test item #1
</div>

<div class="test-item">
    Test item #2
</div>

<div class="test-item">
    Test item #3
</div>

<div class="result">
    <strong>Text content of all items:</strong>
</div>

<script>
    NodeList.prototype.forEach = undefined
</script>

<script src="index.js"></script>

<script>
    document.querySelectorAll(".test-item").forEach((item) => {
        document.querySelector(".result").innerHTML += "<br />" + item.innerText;
    });
</script>