​x
 
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<!DOCTYPE html>
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<title>My Example</title>
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​
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<style>
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  p {
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    background: gold;
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    padding: 20px;
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  }
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</style>
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​
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<!-- Load jQuery -->
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
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​
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<!-- Use jQuery -->
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<script>
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// Wait for DOM to load and be ready
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$(document).ready(function(){
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  // Click event handler for the 'toggle' button
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  $( "#toggleContent" ).click(function() {
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    // Toggle the element
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    $( "p" ).fadeToggle( "fast" );
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  });
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​
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});
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</script>
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<button id="toggleContent">Toggle</button>
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<p>Toggle me!</p>