Angular 4 Get the Text of Selected option of Select control

Angular 4 Get the Text of Selected option of Select control

In Angular (including Angular 4 and later versions), you can retrieve the text of the selected option from a <select> control using template reference variables and event binding. Here's how you can achieve this:

HTML Template Approach

  1. HTML Template: Use two-way data binding (ngModel) to bind the selected value to a component property, and bind to the (change) event to capture changes in the selected option.

    <select [(ngModel)]="selectedOption" (change)="onSelectChange($event)"> <option *ngFor="let option of options" [value]="option.value">{{ option.text }}</option> </select>
    • Replace options with your array of options, where each option object has value and text properties.
    • selectedOption is a component property bound to ngModel to store the selected value.

  2. Component Class: Define the selectedOption property in your component class and implement the onSelectChange() method to retrieve the text of the selected option.

    import { Component } from '@angular/core'; @Component({ selector: 'app-select-example', template: ` <select [(ngModel)]="selectedOption" (change)="onSelectChange($event)"> <option *ngFor="let option of options" [value]="option.value">{{ option.text }}</option> </select> <p>Selected Option Text: {{ selectedOptionText }}</p> ` }) export class SelectExampleComponent { options = [ { value: '1', text: 'Option 1' }, { value: '2', text: 'Option 2' }, { value: '3', text: 'Option 3' } ]; selectedOption: string; // Property to store selected option value selectedOptionText: string; // Property to store selected option text onSelectChange(event: any) { // Retrieve selected option text this.selectedOptionText = this.options.find(option => option.value === this.selectedOption)?.text; } }
    • Explanation:
      • selectedOption: Holds the value of the currently selected option.
      • selectedOptionText: Stores the text of the selected option.
      • onSelectChange(event: any): Event handler method triggered on change event of the <select> element.
      • this.options.find(option => option.value === this.selectedOption)?.text: Uses Array.prototype.find() to locate the selected option object and retrieve its text property.

  3. Display Selected Option Text: Use selectedOptionText in your template to display the text of the selected option.

    <p>Selected Option Text: {{ selectedOptionText }}</p>

Notes:

  • Ensure that the ngModel directive is imported from @angular/forms in your module file (app.module.ts) and added to the imports array of @NgModule.
  • Adjust the options array structure (value and text properties) based on your application's specific requirements.
  • Handle edge cases, such as when no option is selected or when the selected option's text is not found in the options array.

By following these steps, you can effectively retrieve and display the text of the selected option from a <select> control in your Angular application. Adjust the example to fit your specific use case and styling requirements.

Examples

  1. How to bind the selected option text to a variable in Angular? Description: Use two-way data binding with ngModel to capture the selected option's text.

    <select [(ngModel)]="selectedOption" (change)="onSelectChange()"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> <p>Selected: {{ selectedOption }}</p>

  2. How to get selected option text in a form? Description: Access the selected option's text from a form control using reactive forms.

    <form [formGroup]="myForm"> <select formControlName="mySelect" (change)="onSelectChange()"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> </form> <p>Selected: {{ myForm.get('mySelect').value }}</p>

  3. How to get selected option text in the component? Description: Create a method to retrieve the selected option text when the selection changes.

    onSelectChange() { const selectedText = this.selectedOption; console.log('Selected Text:', selectedText); }

  4. How to handle option selection in Angular? Description: Use the change event to trigger a method that captures the selected option.

    <select (change)="onSelectChange($event)"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> 
    onSelectChange(event: Event) { const selectedText = (event.target as HTMLSelectElement).value; console.log('Selected Text:', selectedText); }

  5. How to use ngModel to get selected option text? Description: Use ngModel to bind the select control and retrieve the selected option.

    <select [(ngModel)]="selectedOption"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> <p>Selected: {{ selectedOption }}</p>

  6. How to get the selected option using a reference variable? Description: Use a template reference variable to access the selected option directly.

    <select #mySelect (change)="onSelectChange(mySelect)"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> 
    onSelectChange(select: HTMLSelectElement) { const selectedText = select.value; console.log('Selected Text:', selectedText); }

  7. How to display selected option text in a label? Description: Bind the selected option's text to a label for display.

    <select [(ngModel)]="selectedOption"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> <label>Selected Option: {{ selectedOption }}</label>

  8. How to filter selected options in Angular? Description: Filter the options based on the selected value to display additional information.

    <select [(ngModel)]="selectedOption" (change)="onSelectChange()"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> <p *ngIf="selectedOption">You selected: {{ selectedOption }}</p>

  9. How to retrieve selected option in a dropdown component? Description: Create a custom dropdown component that retrieves the selected option text.

    <app-custom-dropdown [options]="options" (selectionChange)="onSelectChange($event)"></app-custom-dropdown> 
    onSelectChange(selected: string) { console.log('Selected Option:', selected); }

  10. How to dynamically populate a select list in Angular? Description: Populate the select list dynamically and capture the selected option's text.

    <select [(ngModel)]="selectedOption"> <option *ngFor="let option of options" [value]="option">{{ option }}</option> </select> <p>Selected: {{ selectedOption }}</p>

More Tags

headless hdmi azureportal gnu-make sh actionmode drupal-7 statistics special-characters notification-icons

More Programming Questions

More Various Measurements Units Calculators

More Fitness Calculators

More Physical chemistry Calculators

More Everyday Utility Calculators