How to call another components function in angular2

📝 Calling Another Component's Function in Angular 2: A Simple Guide

Have you ever found yourself in a situation where you needed to call a function from one component to another in Angular 2? If so, you're in the right place! In this article, we'll explore some common issues and provide easy solutions to help you accomplish this task effortlessly. So, let's get started! 🚀

📦 Understanding the Components

Before diving deep into how to call another component's function, let's first understand the components involved in our example:

Component 1:

@Component({
    selector: 'com1'
})
export class Com1 {
    function1() {
        // Function 1 implementation
    }
}

Component 2:

@Component({
    selector: 'com2'
})
export class Com2 {
    function2() {
        // Function 2 implementation
        // Here, we want to call function1 from Com1
    }
}

In our example, we have two components, Com1 and Com2. Both components are included in a third parent component using a directive.

🤔 The Problem: Calling a Function from Another Component

The issue at hand is that you want to call function1 from Com1 within function2 of Com2.

💡 The Solution: Using @ViewChild

To solve this problem, we can use the @ViewChild decorator in Angular. The @ViewChild decorator allows us to query the child component and access its properties and methods.

Step 1: Importing ViewChild and Com1 Component

import { Component, ViewChild } from '@angular/core';
import { Com1 } from './com1.component';

Step 2: Adding @ViewChild Decorator

Next, we need to add the @ViewChild decorator to the Com2 component, specifying Com1 as the target.

@Component({
    selector: 'com2',
    template: '<p>Component 2</p>'
})
export class Com2 {
    @ViewChild(Com1) com1: Com1;

    function2() {
        // Function 2 implementation
        // Now we can call function1 from Com1 using this.com1.function1()
        this.com1.function1();
    }
}

Here, we are using @ViewChild(Com1) to query the Com1 component and assign it to the com1 property. Now, we can call function1 from Com1 using this.com1.function1() within function2 of Com2.

🎉 Problem Solved! Let's Recap:

By following these easy steps, you can now call a function from one component to another in Angular 2:

1. Import ViewChild and the component you want to access the function from.

2. Add the @ViewChild decorator to the component you want to call the function within.

3. Specify the component you want to access as the argument to @ViewChild.

4. Assign the queried component to a property.

5. Call the desired function using the assigned property.

📣 Get Involved: Share Your Experience

We hope this guide has helped you solve the problem of calling another component's function in Angular 2. But our journey doesn't end here!

We value your experience and would love to hear from you. Have you encountered any other issues related to this topic? Or do you have a different solution that works well? Share your thoughts and suggestions in the comments below. Let's grow together as a community! 👇

Happy coding! 💻