javascript - Angular2 表单重置，表单重置或提交后取消选中 radio

Question

如何在 ng2 中重置表单，我已经使用方法 form.reset()，但重置后我仍然选中了表单上的复选框。问题是，如何取消选中表单中的复选框？

<form #f="ngForm" [formGroup]="taskCreate" (submit)="onSubmit(taskCreate)">
          <fieldset class="form-group">
            <label for="goal">Cel: </label>
            <select name="goal" class="form-control" formControlName="goal" ngControl="goal">
                <option *ngFor="let goal of goals" [value]="goal.key" [selected]="key === 'first'">{{ goal.value }}</option>
            </select>
            <div class="alert alert-danger" *ngIf="this.formValid.goalErr">You must select a goal.</div>
          </fieldset>

          <fieldset class="form-group">
            <label for="p">Priorytet:</label>
            <div name="p">
              <input class="priority" style="display: table-cell; vertical-align: text-bottom;" type="radio" value="PML" name="priority" formControlName="priority">
              <img style="margin-right: 5px;" [src]="this.minustwo" alt="minustwo" />
              <input class="priority" style="display: table-cell; vertical-align: text-bottom;" type="radio" value="PL" name="priority" formControlName="priority">
              <img style="margin-right: 5px;" [src]="this.minusone" alt="minusone" />
              <input class="priority" style="display: table-cell; vertical-align: text-bottom;" type="radio" value="PN" name="priority" formControlName="priority">
              <img style="margin-right: 5px;" [src]="this.zero" alt="zero" />
              <input class="priority" style="display: table-cell; vertical-align: text-bottom;" type="radio" value="PH" name="priority" formControlName="priority">
              <img style="margin-right: 5px;" [src]="this.plusone" alt="plusone" />
              <input class="priority" style="display: table-cell; vertical-align: text-bottom;" type="radio" value="PMH" name="priority" formControlName="priority">
              <img style="margin-right: 5px;" [src]="this.plustwo" alt="plustwo" />
            </div>
            <div class="alert alert-danger" *ngIf="this.formValid.priorityErr">You must select a priority.</div>
          </fieldset>

          <fieldset class="form-group">
            <label for="note">Uwagi do zadania:</label>
            <textarea maxlength="2000" class="form-control" name="note" rows="8" cols="40" formControlName="note"></textarea>
          <div class="alert alert-danger" *ngIf="this.formValid.noteErr">You must draw a note.</div>
          </fieldset>
[...]

TS:

constructor(private appService: AppService, public cartBox: CartBox, public attachments: AttachmentList, private elementRef: ElementRef, private renderer: Renderer) {
        super();

        this.taskCreate = new FormGroup({
            goal: new FormControl("", Validators.required),
            prodCodeList: new FormControl("", Validators.required),
            note: new FormControl("", Validators.required),
            priority: new FormControl("", Validators.required),
            attachmentList: new FormControl("")
        });

问候! 博斯珀

Answer 1

您可能需要重置每个表单控件。

form.reset() 可以采用由所有表单控件组成的对象。由于您尚未发布如何使用 form.reset，请尝试以下操作。

例如，尝试这样的事情:

this.taskCreate.reset({
goal: '',
prodCodeList: '',
note: '',
priority: '',
attachmentList: ''
})

这应该会重置您拥有的每个表单控件，这意味着它们将保持原样且保持原始状态。

文档 here .