I am working with Angular 2 and typescript. I have a requirement where I only want to display the Save button if a new option is selected, and then hide the Save button after it is clicked. I'm not sure how to approach this problem. Below is the code snippet:
HTML
<select>
<option *ngFor="let option of optionArray" [value]="option">{{option}}</option>
</select>
<span class="input-group-btn">
<button class="btn btn-primary save-button" type="submit">Save</button>
</span>
To make a dynamic change to the submission button based on the value selected in a select field, you can use ngModel.
<select [(ngModel)]="selectedValue">
<option *ngFor="let option of optionArray" [value]="option">{{option}}</option>
</select>
<span class="input-group-btn" *ngIf="selectedValue">
<button class="btn btn-primary save-button" type="submit">Save</button>
</span>
Please Note: Don't forget to import and include
FormsModuleinside your AppModule'sNgModule.
If you find yourself in this situation, consider using *ngIf.
<select [(ngModel)]="selected">
<option *ngFor="let option of optionArray" [value]="option">{{option}}</option>
</select>
<span *ngIf="selected" class="input-group-btn">
<button class="btn btn-primary save-button" type="submit">Save</button>
</span>
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