Should vars or methods be called with "this" inside the component template for optimal practice?

Question

Should vars or methods be called with "this" inside the component template for optimal practice?

Understanding that "this" refers to the instance method is crucial.

Utilizing "this" when calling variables and methods can produce the same results as doing so without it.

Example layout (sample.html):

<p> {{ this.getName() }} </p>

Sample component structure (sample.component.ts):

@Component({
  templateUrl: 'sample.html'
})

export class SampleComponent {

   public name: string;

   constructor() {
      this.name = 'John'; 
   }

   getName():string {
     return this.name;
   }
}

Observing the provided code snippets,

both {{ this.getName() }} and {{ getName() }} will show the value John.

Is incorporating "this" recommended for better coding practices?

Are there any concerns related to performance or other factors if it is used?

angular typescript

Answer 1

Answer №1

Is it advisable to include "this" for better coding practices?

In the context of angular templates, using this is not typically recommended. It's preferable to use {{ getName() }} instead.

Learn More

For more information on coding conventions, refer to the official tutorial: https://angular.io/tutorial/toh-pt1

Answer 2

Is it advisable to include "this" for better coding practices?

In the context of angular templates, using this is not typically recommended. It's preferable to use {{ getName() }} instead.

Learn More

For more information on coding conventions, refer to the official tutorial: https://angular.io/tutorial/toh-pt1

Answer 3

Answer №2

this in Angular template DSL can be used to reference the component instance. Both {{ this.getName() }} and {{ getName() }} are equivalent.

this is typically used to specify property names using bracket notation.

For dynamic usage:

{{ this[methodName]() }}

Or for static usage:

{{ this['foo bar'] }}

Using this for component property names that can already be specified with dot notation serves no significant purpose.

Answer 4

this in Angular template DSL can be used to reference the component instance. Both {{ this.getName() }} and {{ getName() }} are equivalent.

this is typically used to specify property names using bracket notation.

For dynamic usage:

{{ this[methodName]() }}

Or for static usage:

{{ this['foo bar'] }}

Using this for component property names that can already be specified with dot notation serves no significant purpose.

Answer 5

Answer №3

There are numerous ways in which "this" can be used, beyond just promoting good coding practices. As you pointed out, "this" typically refers to the instance method. This allows it to reference a variable or parameter, informing the system of its usage within a specific line of code (primarily seen in C# and Java).

For example:

public class NewClass
{
   private string test;
    public string Test
    {
     get{return test;}
     set{test = value;}
    }
   //constructor with 1 parameter
   //also utilized in Angular, albeit with different syntaxes
   //as demonstrated in Angular 5 for enhanced simplicity and clarity
   public NewClass(string test) 
   {
        this.test = test;
   }
   public void SomeFunction(string test)
   {
     //variable class test on the left side
     //parameter test on the right side
     this.test = test;
   }
}

In Angular, the constructor mentioned is similar to:

export class someClassComponent{
    constructor(private router : Router){
    }
    someFunction(var router){
       //router from the constructor on the left side
       //parameter on the right side
       this.router = router;
    }
}

Answer 6

There are numerous ways in which "this" can be used, beyond just promoting good coding practices. As you pointed out, "this" typically refers to the instance method. This allows it to reference a variable or parameter, informing the system of its usage within a specific line of code (primarily seen in C# and Java).

For example:

public class NewClass
{
   private string test;
    public string Test
    {
     get{return test;}
     set{test = value;}
    }
   //constructor with 1 parameter
   //also utilized in Angular, albeit with different syntaxes
   //as demonstrated in Angular 5 for enhanced simplicity and clarity
   public NewClass(string test) 
   {
        this.test = test;
   }
   public void SomeFunction(string test)
   {
     //variable class test on the left side
     //parameter test on the right side
     this.test = test;
   }
}

In Angular, the constructor mentioned is similar to:

export class someClassComponent{
    constructor(private router : Router){
    }
    someFunction(var router){
       //router from the constructor on the left side
       //parameter on the right side
       this.router = router;
    }
}

Should vars or methods be called with "this" inside the component template for optimal practice?

Answer №1

Learn More

Answer №2

Answer №3

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