d3.js simple nothing

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<!DOCTYPE html>
<html>
    <head>
        <title>1</title>
    </head>
    <body>
        <h1>some testing</h1>
        <ul>
            <ol>item 1</ol>
            <ol>item 2</ol>
            <ol>item 3</ol>
        </ul>
        
</html> 
    