javascript - 用 jQuery Knob Dial 包围输入元素

Question

以下代码片段将 <input>元素变成 jQuery-knob拨号:

<input type="text" value="12" class="dial">

<script>
    $(function() {
        $(".dial").knob();
    });
</script>

看起来如下:

问题:我想将 jQuery 旋钮中的输入栏(上面显示为 12)用作普通输入栏(即，用户应该能够输入其中的正常文本)。然后，我想使用 javascript 从其他地方以编程方式调整旋钮值。有办法做到这一点吗？

Answer 1

尝试使用 .clone() , .off() ;另请参阅 Set the value 处的文档

$(function() {
  var elem = $(".dial");
  elem.knob();
  var clone = elem.clone(); // clone `elem` 
  clone.removeClass("dial") // remove `.dial` `class` from `clone`
  .attr("type", "text") // set `clone` `type` to `text`
  .val("") // set `clone` `value` to `""`
  .off("**") // remove all delegated events
  .appendTo(elem.parent()) // append `clone` to `elem.parent()`
  .focus(); // call `.focus()` on `clone`
  elem.css("opacity", "0"); // set `elem` `opacity` to `0`

  // change `.dial` `value` , 
  // https://github.com/aterrien/jQuery-Knob#set-the-value
  elem
  .val(27)
  .trigger("change");

});

$(function() {
      var elem = $(".dial");
      elem.knob();
      var clone = elem.clone(false)    
      .removeClass("dial")
      .attr("type", "text")
      .val("")
      .off("**")
      .appendTo(elem.parent())
      .focus();
      elem.css("opacity", 0);      
  
      // change `.dial` `value`
      elem
      .val(27)
      .trigger("change");
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
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  </script>
<input type="text" value="12" class="dial" />