Question

我正在将Angular 6与Angular材质7.1.1一起使用而且我正在尝试使用具有自动完成功能的芯片。但是问题在于，当我选择一个选项时，该选项会自动应用于所有芯片。

`<mat-form-field class="example-chip-list">
  <mat-chip-list #chipList>
    <mat-chip
      *ngFor="let fruit of fruits"
      [selectable]="selectable"
      [removable]="removable"
      (removed)="remove(fruit)">
      {{fruit}}
      <mat-icon matChipRemove *ngIf="removable">cancel</mat-icon>
    </mat-chip>
    <input
      placeholder="New fruit..."
      #fruitInput
      [formControl]="fruitCtrl"
      [matAutocomplete]="auto1"
      [matChipInputFor]="chipList"
      [matChipInputSeparatorKeyCodes]="separatorKeysCodes"
      [matChipInputAddOnBlur]="addOnBlur"
      (matChipInputTokenEnd)="add($event)">
  </mat-chip-list>
  <mat-autocomplete #auto="matAutocomplete" (optionSelected)="selected($event)">
    <mat-option *ngFor="let fruit of filteredFruits | async" [value]="fruit">
      {{fruit}}
    </mat-option>
  </mat-autocomplete>
</mat-form-field>`

如何获取仅应用于特定输入字段的信息？

Answer 1

每个芯片列表必须使用不同的列表，[matAutocomplete]还要使用两个不同的属性

HTML代码：

<mat-form-field class="example-chip-list">
    <mat-chip-list #chipList>
        <mat-chip *ngFor="let fruit of fruits" [selectable]="selectable" [removable]="removable" (removed)="remove(fruit)">
            {{fruit}}
            <mat-icon matChipRemove *ngIf="removable">cancel</mat-icon>
        </mat-chip>
        <input
      placeholder="New fruit..."
      #fruitInput
      [formControl]="fruitCtrl"
      [matAutocomplete]="auto"
      [matChipInputFor]="chipList"
      [matChipInputSeparatorKeyCodes]="separatorKeysCodes"
      [matChipInputAddOnBlur]="addOnBlur"
      (matChipInputTokenEnd)="add($event)">
  </mat-chip-list>
  <mat-autocomplete #auto="matAutocomplete" (optionSelected)="selected($event)">
    <mat-option *ngFor="let fruit of filteredFruits | async" [value]="fruit">
      {{fruit}}
    </mat-option>
  </mat-autocomplete>
</mat-form-field>

<h2>Second Chips List</h2>

<mat-form-field class="example-chip-list">
  <mat-chip-list #chipList>
    <mat-chip
      *ngFor="let fruit of fruits1"
      [selectable]="selectable"
      [removable]="removable"
      (removed)="remove1(fruit)">
      {{fruit}}
      <mat-icon matChipRemove *ngIf="removable">cancel</mat-icon>
    </mat-chip>
    <input
      placeholder="New fruit..."
      #fruitInput1
      [formControl]="fruitCtrl1"
      [matAutocomplete]="auto1"
      [matChipInputFor]="chipList"
      [matChipInputSeparatorKeyCodes]="separatorKeysCodes"
      [matChipInputAddOnBlur]="addOnBlur"
      (matChipInputTokenEnd)="add1($event)">
  </mat-chip-list>
  <mat-autocomplete #auto1="matAutocomplete" (optionSelected)="selected1($event)">
    <mat-option *ngFor="let fruit of filteredFruits | async" [value]="fruit">
      {{fruit}}
    </mat-option>
  </mat-autocomplete>
</mat-form-field>

A Working StackBlitz Example

Answer 2

我认为您只需要更改mat-chip-list的ID即可。

因此，第一次设置ID

<mat-chip-list #chipList>

第二秒钟设置ID

<mat-chip-list #chipList2>

然后设置

[matChipInputFor]="chipList"

和[matChipInputFor]="chipList2"

现在应该可以正常工作了。

如何使用Angular材质7.1.1在同一页面上具有多个芯片自动完成功能？

2 个答案: