​x
 
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<!DOCTYPE html>
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<title>My Example</title>
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​
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
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<script>
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  $( function() {
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    $( "button" ).click( function() {
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      $( "img" ).attr( "src", "/pix/samples/10m.jpg" );
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    });
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  });
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</script>
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​
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<p><button>Change Image</button></p>
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<img src="/pix/samples/8m.jpg" alt="Photo of bird">