如何阻止 alertController 再次打开

Question

我已经构建了一种将自定义文本插入 ion-select multi 的方法。我使用警报框在 select 数组和输入字段中插入自定义测试，以关闭警报框。一切正常，但在将数据插入输入字段后警告框将再次打开。我如何确保异步 inputCustomValuesMulti 只运行一次。

html

<ion-item class="ion-text-wrap">
    <ion-label position="stacked">{{fromItem.Question}}</ion-label>
    <ion-select multiple="true" #c (ionChange)="selectChangedMulti(c.value, i)" name="{{fromItem.name}}" [(ngModel)]="fromItem.input">
        <ion-select-option *ngFor="let item of importQuestions[i].values" value="{{item.value}}" >{{ item.value }}</ion-select-option>
    </ion-select>
</ion-item>

ts

selectChangedMulti(selectedValue: string[], index: string ) {
  this.index = index;
  if (selectedValue.includes("other")) {
    this.inputCustomValuesMulti(selectedValue);
  } else {
  this.currentValue = selectedValue;
  };
};

async inputCustomValuesMulti(selectedValue) {
    const inputAlert = await this.alertController.create({
    header: 'Enter your custom text:',
    inputs: [ { type: 'text', placeholder: 'type in' } ],
    buttons: [ { text: 'Cancel' }, { text: 'Ok' } ]
    });
    await inputAlert.present();
    await inputAlert.onDidDismiss().then((data) => {
    let customValueName: string = data.data.values[0]; 
    if (customValueName) {
        let indexFound = this.importQuestions[this.index].values.findIndex((item: string) => item === customValueName)
        if (indexFound === -1) {
        this.importQuestions[this.index].values.push({value: customValueName});
        let importQuestion = selectedValue;
        importQuestion.push(customValueName);
        let passData = importQuestion;
        let newArray = Array.from(passData);
        // inserts new text into input field
        this.importQuestions[this.index].input = newArray; 
        } else {
        console.log("else");
        };
    }; 
    })
};

Answer 1

我最后做的是从传递数据中过滤掉其他数据。

let passData = importQuestion.filter(e => e !== "other");

现在该方法不再在 ionChange 上看到 "other"。

如何阻止 alertController 再次打开

how do I stop alertController from opening a second time

javascript

ionic4

ion-select