有沒有辦法在數組中獲取復選框的選中值？ [陣營]

Question

此復選框[看起來像切換按鈕]基於數據生成。 我想在數組中獲取選中的值。

碼

{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

如果單擊該按鈕，我將獲得該按鈕的名稱。

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

我的customersmsselect數組看起來像

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"}

問題

我想在單擊按鈕時獲取數組中的所有選中值。

Answer 1

你可以試試這樣使用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>
  );

那么你可以將this.checkBoxes稱為常規數組

Answer 2

您的輸入字段：

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

你的onChange活動：

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
    )
  });
}

這將為您提供當前打開的對象數組：

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

這將為您提供當前為ON的ID數組，我假設它是您想要的值？

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

---

演示： https ： //codesandbox.io/s/quiet-morning-j6dbx？ fontize = 14

Answer 3

在這里，我們可以使用受控輸入。 然后我們需要綁定checked屬性並在onChange處理程序中設置狀態。 checked={e.isactive === "ON"}根據值檢查復選框。 onChange={()=>this.onChangeFavorite(e)}將附加事件處理程序以及正在映射的customersmsselect項。

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

是否需要檢查輸入。

{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
    });
};