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web_page_production_exercises
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0820练习2.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript">
			var suiji=parseInt((Math.random()*100+1));
			console.log(suiji);
			function panduan(){
				var num = parseInt(document.getElementById("num").value);
				var span =document.getElementById("span");
				if (num>suiji) {
					span.innerHTML="猜大了";
				}else if(num<suiji){
					span.innerHTML="猜小了";
				}else{
					span.innerHTML="猜对了";
				}
			}
		</script>
	</head>
	<body>
		<input type="text" id="num"/>
		<input type="button"  value="猜" onclick="panduan()"/>
		<span id="span"></span>
	</body>
</html>