HTML DOM Input Number step 属性

htmlweb developmentfront end technology更新于 2025/6/2 13:32:17

HTML DOM Input Number step 属性返回并修改 HTML 文档中输入数字字段 step 属性的值。

语法

以下是语法 −

返回 step

object.step

修改 step

object.step = “number”

示例

让我们看一个 HTML DOM 输入月份 step 属性的示例 −

<!DOCTYPE html>
<html>
<head>
<style>
   html{
      height:100%;
   }
   body{
      text-align:center;
      color:#fff;
      background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) center/cover no-repeat;
      height:100%;
   }
   p{
      font-weight:700;
      font-size:1.1rem;
   }
   input{
      display:block;
      width:35%;
      border:2px solid #fff;
      background-color:transparent;
      color:#fff;
      font-weight:bold;
      padding:8px;
      margin:1rem auto;
   }
   .btn{
      background:#0197F6;
      border:none;
      height:2rem;
      border-radius:2px;
      width:35%;
      margin:2rem auto;
      display:block;
      color:#fff;
      outline:none;
      cursor:pointer;
   }
   .show{
      font-size:1.5rem;
      color:#db133a;
      font-weight:bold;
   }
</style>
</head>
<body>
<h1>DOM Input number step property Demo</h1>
<p>Hi, Enter any number & then try to increment/decrement its value</p>
<input type="number" class="numberInput">
<button type="button" onclick="setStep()" class="btn">Set step to 5</button>
<button type="button" onclick="getStep()" class="btn">Click me to show step value</button>
<div class="show"></div>
<script>
   function setStep(){
      var numberInput = document.querySelector(".numberInput");
      numberInput.step="5";
   }
   function getStep() {
      var numberInput = document.querySelector(".numberInput");
      var showMsg = document.querySelector(".show");
      showMsg.innerHTML = numberInput.step;
   }
</script>
</body>
</html>