javascript - 防止事件冒泡 dom 树

Question

我有一个卡片组件如下

<div
      onClick={e => {
        console.log("DEMAND CARD CLICKED");
        if (isSelectionActive) {
          setSelected();
        }
      }}
>  
      <DemandCardFooter
        demandId={id}
        totalBooked={totalBooked}
        totalDemand={totalDemand}
      />    
</div>

这<DemandCardFooter/>看起来像：

<div className="vt-card-footer d-flex justify-content-between align-items-baseline px-3">
      <DemandSelector demandId={demandId} />
      <p className="lead font-weight-bold mb-0">
        <span className="text-success">{totalBooked}</span> / {totalDemand}{" "}
        <small className="text-muted font-weight-normal">Units.</small>
      </p>
</div>

最后是<DemandSelector/>这样的：

const DemandSelector = ({ demandId }) => {
  const [isChecked, setChecked] = useRowSelector({
    path: "demands",
    payload: { id: demandId }
  });
  return (
    <Checkbox
      checked={isChecked ? true : false}
      onClick={e => {
        console.log("CHECKBOX CLICKED");
        e.stopPropagation();
        e.nativeEvent.stopImmediatePropagation();
        setChecked();
      }}
    />
  );
};

我的问题是当我单击复选框时，复选框onClick和卡片onClick都被触发，有什么办法可以将回调限制在最低级别？

标签： javascriptreactjsevent-handlingdom-eventsevent-bubbling

Answer 1

一段时间后想通了。解决方案是放入stopPropogation()DOM 元素封装<DemandSelector/>

所以这段代码有效

 <div
      className="vt-card-footer d-flex justify-content-between align-items-baseline px-3"
      onClick={e => {
        e.stopPropagation();
      }}
    >
      <DemandSelector demandId={demandId} />
      <p className="lead font-weight-bold mb-0">
        <span className="text-success">{totalBooked}</span> / {totalDemand}{" "}
        <small className="text-muted font-weight-normal">Units.</small>
      </p>
    </div>

也别忘了把它一路放下

const DemandSelector = ({ demandId }) => {
  const [isChecked, setChecked] = useRowSelector({
    path: "demands",
    payload: { id: demandId }
  });

  return (
    <Checkbox
      checked={isChecked ? true : false}
      onClick={e => {
        e.stopPropagation();
        setChecked();
      }}
    />
  );
};