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jQuery: Reading an alt attribute

This is an image of flowers. This is also an image of flowers.
The jQuery Code START
    <script type="text/javascript" src=""></script>
    <script type="text/javascript">
      function getAlt() {
        alert($("img").slice(1, 2).attr("alt"));

    <h1>jQuery: Reading an alt attribute</h1>
    <img src="images/image1.jpg" alt="This is an image of flowers."></img>
    <img src="images/image2.jpg" alt="This is also an image of flowers."></img>
    <form action="">
    <input type = "button" value="1st IMG get alt attribute" onclick="getAlt()"></input>
    <input type = "button" value="2nd IMG get alt attribute" onclick="getAlt2()"></input>
    <input type = "button" value="3rd IMG get alt attribute" onclick="getAlt3()"></input>