随机代码生成器 - WebCat - 常规

<!DOCTYPE html>
<html>
  <head>
	<meta charset="utf-8" name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
	<title>WebCat</title>
	<script src="js/jquery.min.js"></script>
	<script src="js/wc-3.0.6.min.js"></script>
  </head>
  <body>	
	<h1 id="title">Hello world</h1>
	<p id="p1">工程创建成功！</p>
	<button id="btn">Click me</button>
	<script>
		const options = ['1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
		let selected = [];
		while(selected.length < 12) {
			let randomIndex = Math.floor(Math.random() * options.length);
			let randomChar = options[randomIndex];
			if(selected.indexOf(randomChar) === -1) {
				selected.push(randomChar);
			}
		}
	    p1.onclick=function(){
			$("#title").text(selected.join(""));
		}
	    btn.onclick=function(){
			selected = [];
			while(selected.length < 12) {
				let randomIndex = Math.floor(Math.random() * options.length);
				let randomChar = options[randomIndex];
				if(selected.indexOf(randomChar) === -1) {
					selected.push(randomChar);
				}
			}
			$("#title").text("Hello world");
		}
	</script>  
  </body>
</html>