HTML/index.html at master · lailahgrant/HTML · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>jQuery enable / disable button</title>

    <link rel="stylesheet" type="text/css" href="styles.css" />
  </head>
  <body>
    <div id="frame">
      <div class="search">
        <h1>jQuery enable / disable button</h1>
        <form method="POST" action="index.php">
          <input type="text" name="searchQuery" id="searchInput" />
          <input
            type="submit"
            name="submit"
            id="submitBtn"
            class="enableOnInput"
            disabled="disabled"
          />
        </form>
      </div>
    </div>

    <!-- jquery library-->
    <script
      type="text/javascript"
      src="http://code.jquery.com/jquery.min.js"
    ></script>

    <!-- 1st thing. we need to ctch the user interaction event,
    there are many events to choose but here we are going to use "keyup" - this means you can trigger  a set of code to run everytime the user presses & releases a key within the searchInput textbox.
    -->
    <script type="text/javascript" src="script.js"></script>
  </body>
</html>