这篇文章主要为大家详细介绍了javascript制作计算器的方法，文章中的示例代码非常详细，若有兴趣可以学习参考，闲言少叙直接上代码：

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>JS计算器</title>

<style>body,p,input{ margin: 0; padding: 0;}.wp{ width: 500px; height: 500px; border:10px solid black; margin: 0 auto; margin-top: 100px;}#text{ width: 480px; height: 90px; border-bottom: 10px solid black; font-size: 50px; line-height: 100px; text-align: left; padding-left: 20px; background: #ffffff;}input{ width: 125px; height: 100px; background: #c0c0c0; float: left; font-size: 40px; line-height: 100px; text-align: center;}</style><script>window.onload = function () { var oText = document.getElementById('text'); var aBtn = document.getElementsByTagName('input'); var aText = oText.value for(i=0;i<aBtn.length;i++){ aBtn[i].onclick = conunt; }; function conunt(value){ if(this.value == 'C'){ oText.value =''; }else if(this.value == '='){ oText.value = eval(oText.value) }else if(this.value == 'x'){ oText.value -= oText.value.substring( oText.value.length); } else{ oText.value += this.value; }; };};</script>

</head>
<body>
<div class="wp">
<input type="text" id="text">
<input type="button" id="btn1" value="C" >
<input type="button" id="btn2" value="/">
<input type="button" id="btn3" value="*">
<input type="button" id="btn4" value="-">
<input type="button" id="btn5" value="1">
<input type="button" id="btn6" value="2">
<input type="button" id="btn7" value="3">
<input type="button" id="btn8" value="+">
<input type="button" id="btn9" value="4">
<input type="button" id="btn10" value="5">
<input type="button" id="btn11" value="6">
<input type="button" id="btn12" value=".">
<input type="button" id="btn13" value="7">
<input type="button" id="btn14" value="8">
<input type="button" id="btn15" value="9">
<input type="button" id="btn16" value="=">
</div>
</body>
</html>

以上就是javascript制作计算器的详细内容，代码示例简单明了，如果在日常工作遇到此问题。通过这篇文章，希望你能有所收获，更多详情敬请关注亿速云行业资讯频道！