实例代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>js获取随机数</title>
</head>
<body>
ceil:<br />
<input type="text" id="ceil" /><br />
round:<br />
<input type="text" id="round" /><br />
floor:<br />
<input type="text" id="floor" /><br />
round2:<br />
<input type="text" id="round2" /><br />
<button onclick="clickMath()">生成随机数</button>
<script>
function clickMath(){
var ceil = Math.ceil(Math.random()*10);
document.getElementById("ceil").value = ceil;
var round = Math.round(Math.random());
document.getElementById("round").value = round;
var floor= Math.floor(Math.random()*10);
document.getElementById("floor").value = floor;
var round2 = Math.round(Math.random()*10);
document.getElementById("round2").value = round2;
}
</script>
</body>
</html>
