Chapter 12, Intermediate JavaScript

Practice exercises

Practice exercise 12.1

    <script>
        const output = document.getElementById("output");
        const findValue = document.getElementById("sText");
        const replaceValue = document.getElementById("rText");
        document.querySelector("button").addEventListener("click", lookUp);
        function lookUp() {
            const s = output.textContent;
            const rt = replaceValue.value;
            const re = new RegExp(findValue.value, "gi");
            if (s.match(re)) {
                let newValue = s.replace(re, rt);
                output.textContent = newValue;
            }
        }
    </script>

Practice exercise 12.2

    <script>
        const output = document.querySelector(".output");
        const emailVal = document.querySelector("input");
        const btn = document.querySelector...