hasAttribute and hasChildNodes()
<!DOCTYPE html>
<html lang="en" id="hello">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Test Page</title>
<link rel="stylesheet" href="latesttest.css">
</head>
<body>
<div id="outer">
<h1 id="selector"> RUSTIC TRAVEL JUNKIE</h1>
<p id="para">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum ipsam blanditiis voluptatibus et, cumque expedita, quam ea! Dolorem obcaecati, fuga, culpa neque, repellat laudantium libero sed sint veritatis praesentium vitae cumque ratione eveniet optio, aspernatur ab.</p>
<div id="abc"></div>
<button id="inner">CLICK ME</button>
</div>
<script>
var a = document.getElementById('outer');
var b = a.hasAttribute("class");
// var b= a.hasChildNodes("inner");
console.log(b);
</script>
</div>
</body>
</html>
<html lang="en" id="hello">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Test Page</title>
<link rel="stylesheet" href="latesttest.css">
</head>
<body>
<div id="outer">
<h1 id="selector"> RUSTIC TRAVEL JUNKIE</h1>
<p id="para">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Illum ipsam blanditiis voluptatibus et, cumque expedita, quam ea! Dolorem obcaecati, fuga, culpa neque, repellat laudantium libero sed sint veritatis praesentium vitae cumque ratione eveniet optio, aspernatur ab.</p>
<div id="abc"></div>
<button id="inner">CLICK ME</button>
</div>
<script>
var a = document.getElementById('outer');
var b = a.hasAttribute("class");
// var b= a.hasChildNodes("inner");
console.log(b);
</script>
</div>
</body>
</html>
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