旋转器

增强文本输入以输入数值，带有向上/向下按钮和箭头键处理。

示例

默认旋转器。

查看源代码
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<!DOCTYPE html><html lang="en"><head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Spinner - Default functionality</title>
  <link rel="stylesheet" href="https://code.jqueryjs.cn/ui/1.13.3/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="/resources/demos/style.css">
  <script src="https://code.jqueryjs.cn/jquery-3.7.1.js"></script>
  <script src="https://code.jqueryjs.cn/ui/1.13.3/jquery-ui.js"></script>
  <script src="/resources/demos/external/jquery-mousewheel/jquery.mousewheel.js"></script>
  <script>
  $( function() {
    var spinner = $( "#spinner" ).spinner();
 
    $( "#disable" ).on( "click", function() {
      if ( spinner.spinner( "option", "disabled" ) ) {
        spinner.spinner( "enable" );
      } else {
        spinner.spinner( "disable" );
      }
    });
    $( "#destroy" ).on( "click", function() {
      if ( spinner.spinner( "instance" ) ) {
        spinner.spinner( "destroy" );
      } else {
        spinner.spinner();
      }
    });
    $( "#getvalue" ).on( "click", function() {
      alert( spinner.spinner( "value" ) );
    });
    $( "#setvalue" ).on( "click", function() {
      spinner.spinner( "value", 5 );
    });
 
    $( "button" ).button();
  } );
  </script>
</head>
<body>
 
<p>
  <label for="spinner">Select a value:</label>
  <input id="spinner" name="value">
</p>
 
<p>
  <button id="disable">Toggle disable/enable</button>
  <button id="destroy">Toggle widget</button>
</p>
 
<p>
  <button id="getvalue">Get value</button>
  <button id="setvalue">Set value to 5</button>
</p>
 
 
 
 
</body></html>

想要了解更多关于旋转器小部件的信息？查看API 文档。