我想创建一个文本生成器，但是当我点击链接时，它只能生成一些存储在数组中的示例文本。我试过使用多个字符串，但我无法让它工作。这是代码：
HTML：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>Text generate 2 - copy</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<a href="#" id="link">Generate</a>
<h1 id="head"></h1>
<p id="para"></p>
<script src="js/script.js"></script>
</body>
</html>
JS：
var heading = document.getElementById('head');
var paragraph = document.getElementById('para');
var head = ["Sample heading one"];
var para = ["Sample paragraph one"];
document.getElementById("link").onclick = function visible() {
if (heading.style.display = "none")
{
heading.style.display = "block";
}
else
{
heading.style.display = "block";
}
if (paragraph.style.display = "none")
{
paragraph.style.display = "block";
}
else
{
paragraph.style.display = "block";
}
heading.innerHTML = head;
paragraph.innerHTML = para;
}