How to get the Text value of Anchor tag inside this li class

Sorry for the noob question, I’m still learning in Javascript. I just want to get the “Welcome” text when the page load and save it to a variable so I could make a string compare.

<nav id="top-menu-nav">
    <ul id="top-menu" class="nav">
        <li id="menu-item-103" class="menu-item">
            <a href="#">About Us</a>
        </li>
        <li id="menu-item-25417" class="menu-item">
            <a href="#">Offers</a>
        </li>
        <li id="menu-item-102" class="menu-item">
            <a href="#">FAQ</a></li>
        <li id="menu-item-104" class="menu-item">
            <a href="#">Corporate</a></li>
        <li id="menu-item-100" class="menu-item">
            <a href="#">Contact Us</a></li>
        <li class="login">
            <a href="#">Welcome</a>
        </li>
    </ul>
</nav>

How to get the Text value of Anchor tag inside this li class