JavaScript External Scripting Example

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<h2 class="main-heading" id="main-heading">What is JavaScript External Scripting?</h2>
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<p>We can include JavaScript in a web page by <a href="https://www.tutsinsider.com/javascript/javascript-how-to/">three methods</a>, and external scripting is the third method.</p>
<h3>Click the Button to Shuffle the letter colors</h3>
<h2 id="shuffleString" style="letter-spacing: 2px; margin-bottom: 10px; margin-top: 50px;">External JavaScript</h2>

<button id="shuffleButton" class="main-button">Shuffle Colors</button>

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