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<html>
<head>
<title>The JavaScript Encyclopedia: H</title>
<link rel="stylesheet" href="encyclopedia.css" type="text/css">
</head>
<body>
<h1>H</h1>
<h2 id="hasOwnProperty">hasOwnProperty</h2>
<h3 id="hasOwnProperty Object prototype function"><code>hasOwnProperty</code> object prototype function</h3>
<p>Blah.</p>
<h2 id="hexadecimal">hexadecimal <dfn>base 16</dfn></h2>
<p>The hexadecimal digits are <code>0</code>, <code>1</code>, <code>2</code>, <code>3</code>, <code>4</code>, <code>5</code>, <code>6</code>, <code>7</code>, <code>8</code>, <code>9</code>, <code>a</code>, <code>b</code>, <code>c</code>, <code>d</code>, <code>e</code>, and <code>f</code>. The hexadecimal digits <code>a</code> <code>b</code> <code>c</code> <code>d</code> <code>e</code> and <code>f</code> can also be represented in uppercase. The lowercase form is slightly preferred because it is easier to confuse <code>B</code> with <code>8</code> than <code>b</code> with <code>6</code>.</p>
<p>Unlike the <a href="D.html#decimal">decimal</a> system which uses base 10, the hexadecimal system uses base 16, where each hexadecimal digit represents exactly 4 bits. In olden times, programming was closer to the machine so a format that was trivially convertable to binary was highly desirable. Today, hexadecimal is mainly used to encode a code value in a <a href="U.html#Unicode escape sequence">Unicode escape sequence</a> and to encode colors in <a href="C.html#CSS">CSS</a>.</p>
<p>Also see <a href="N.html#number literal">number literal</a>, <a href="P.html#parseInt global function"><code>parseInt</code> global function</a>, and <a href="T.html#toString Number prototype function"><code>toString</code> <code>Number</code> prototype function</a>.</p>
<h2 id="higher order function">higher order function</h2>
<p>Blah.</p>
<h2><a href="H.html#hoisting">hoisting</a></h2>
<p>Blah.</p>
<h2 id="host object">host object</h2>
<p>A host object is an object that is not a ECMAScript object, but that can be interacted with by ECMAScript programs. It might be provided by the host operating system. The ECMAScript standard does not require that there be any host objects, but implementations are allowed to provide them. Host objects, because they are not JavaScript objects, might act funny. You know, funny. Also see <a href="N.html#native object">native object</a>. </p>
<h2 id="HTML">HTML</h2>
<p>Blah.</p>
</body>
</html>