tryjsref_ceil2 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<body>
<p id="demo">单击按钮,不同数值上升到最近的整数。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
    var a=Math.ceil(0.60);
    var b=Math.ceil(0.40);
    var c=Math.ceil(5);
    var d=Math.ceil(5.1);
    var e=Math.ceil(-5.1);
    var f=Math.ceil(-5.9);
    var x=document.getElementById("demo");
    x.innerHTML=a + "<br>" + b + "<br>" + c + "<br>" + d + "<br>" + e + "<br>" + f; 
}
</script>
</body>
</html>
 
 
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运行结果
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