Question

此复选框[看起来像切换按钮]是根据数据生成的。我想在数组中获取检查值。

代码

{this.state.customersmsselect.map((e, key) => {

  if(e.isactive == "ON"){
  return (
    <div key={key}>
      <div className="form-group col-md-8">
        <label className="col-md-4 control-label">{e.notificationtype}</label>
        <div className="col-md-4 smart-form">
          <label className="toggle">
            <input type="checkbox" id={"smscheckbox" + key} value={e.isactive + "," + e.smstemplateid} name={"checkbox-toggle"+e.smstemplateid} onChange={this.onChangeFavorite} defaultChecked />
            <i data-swchoff-text='OFF' data-swchon-text='ON' ></i>
        </label>
      </div>
    </div>
    <div style={{ margin: 10 }}>&nbsp;</div>
    </div>
  );

我的onChange方法

如果单击该按钮，那么我会得到该按钮的名称。

   onChangeFavorite(event) {
     if(!event.target.checked){
        console.log(event.target.name);
     }
   };

我的客户msselect阵列看起来像

0: {smstemplateid: "1", notificationtype: "Invoice Details", isactive: "ON"}
1: {smstemplateid: "2", notificationtype: "Payment Thank-You", isactive: "ON"}
2: {smstemplateid: "3", notificationtype: "Daily Closing Balance", isactive: "OFF"}
3: {smstemplateid: "4", notificationtype: "Monthly Closing Balance", isactive: "ON"}

问题

我想在单击按钮时获取数组中所有检查的值。

Answer 1

您可以尝试像这样使用ref：

{this.state.customersmsselect.map((e, key) => {
  $('#s').val(key);
  if(e.isactive == "ON"){
  return (
    <div key={key}>
      <div className="form-group col-md-8">
        <label className="col-md-4 control-label">{e.notificationtype}</label>
        <div className="col-md-4 smart-form">
          <label className="toggle">
            <input type="checkbox" id={"smscheckbox" + key} value={e.isactive + "," + e.smstemplateid} name={"checkbox-toggle"+e.smstemplateid} onChange={this.onChangeFavorite} defaultChecked ref={node => { this.checkBoxes[key] = node; }} />
            <i data-swchoff-text='OFF' data-swchon-text='ON' ></i>
        </label>
      </div>
    </div>
    <div style={{ margin: 10 }}>&nbsp;</div>
    </div>
  );

然后您可以将this.checkBoxes称为常规数组

Answer 2

您的输入字段：

<input type="checkbox" id={"smscheckbox" + key} value={e.isactive} name={"checkbox-toggle"+e.smstemplateid} onChange={(event) => this.onChangeFavorite(event, key)} checked={e.isactive === "ON"} />

您的onChange事件：

onChangeFavorite(event, index) {
  const shouldBeOnOrOff =
    this.state.customersmsselect[index].isactive === "ON" ? "OFF" : "ON";
  this.setState({
    customersmsselect: this.state.customersmsselect.map((item, i) =>
      index === i ? { ...item, isactive: shouldBeOnOrOff } : item
    )
  });
}

这将为您提供一系列当前处于打开状态的对象：

this.state.customersmsselect.filter((item) => item.isactive === "ON");

这将为您提供一个当前为ON的ID数组，我认为这是您想要的值？

this.state.customersmsselect.filter((item) => item.isactive === "ON").map((item) => item.smstemplateid);

演示：

Answer 3

在这里，我们可以改用受控输入。然后，我们需要绑定选中的属性，并在onChange处理程序中设置状态。 checked={e.isactive === "ON"}根据值检查复选框。 onChange={()=>this.onChangeFavorite(e)}将附加事件处理程序以及正在映射的customermsselect项。

x.isactive = x.isactive === "OFF" ? "ON" : "OFF";
        this.setState({
          customersmsselect: this.state.customersmsselect
});

对输入进行必要的检查。

{this.state.customersmsselect.map((e, key) => {
  $('#s').val(key);
  if(e.isactive == "ON"){
  return (
    <div key={key}>
      <div className="form-group col-md-8">
        <label className="col-md-4 control-label">{e.notificationtype}</label>
        <div className="col-md-4 smart-form">
          <label className="toggle">
            <input type="checkbox" id={"smscheckbox" + key} value={e.isactive + "," + e.smstemplateid} name={"checkbox-toggle"+e.smstemplateid} onChange={()=>this.onChangeFavorite(e)} checked={e.isactive === "ON"} />
            <i data-swchoff-text='OFF' data-swchon-text='ON' ></i>
        </label>
      </div>
    </div>
    <div style={{ margin: 10 }}>&nbsp;</div>
    </div>
  );

然后

onChangeFavorite(x) {
     //Here now we are directly changing the array element value. 
     //Since its in the state when we change and assign it will automatically
     //update the controlled components.


    x.isactive = x.isactive === "OFF" ? "ON" : "OFF";
    this.setState({
      customersmsselect: this.state.customersmsselect
    });
};

有没有办法获取数组中复选框的选中值？ [反应]

3 个答案: