Can I combine two decimal values using ngModel in Angular?

Question

Can I combine two decimal values using ngModel in Angular?

I am working with an input field that has the variable name sipmaximum. This variable is expected to contain a numeric value.

Here's an example:

Here is the template:

<tr>
   <th>SIP maximum </th>
   <td>
     <input id="sipmaximum" name="sipmaximum" type="text" class="form-control" [(ngModel)]="sipmaximum" style="width: 70%" required greaterThanZero />
   </td>
</tr>

https://i.sstatic.net/cwm64rpg.png

In normal scenarios, the variable sipmaximum should display as follows:

9999.00

Below is the JSON data:

{
   "AANBOD": {
      "ISINAANBOD": "Y",
      "RISK": "3",
      // other key-value pairs
      "SIPMINIMUM": 50,
      "SIPMAXIMUM": 9999
   }
}

How can I ensure that the .00 is always added to the displayed value of the sipmaximum variable?

// TypeScript code will not be replicated for demonstration purposes

Interface section...

export interface PurchasableSecuritieResponse extends ApiResponse {
    TIT: Tit[];
  }
  
  export interface Tit {
    ADVTITRE: {
      BASIQUETITRE: {
        // nested object structure
      };
      EXIST: number;
      SECE: number;
      // more fields...
    };
    TITARG: {
      COMPLEXITY: string;
      CREATTIME: string;
      // additional properties...
    };
    AANBOD: {
      ISINAANBOD: string;
      RISK: string;
      // relevant fields including SIPMINIMUM and SIPMAXIMUM
    };
    ...

angular typescript

Answer 1

Answer №1

Although the solution I provided in the comment works, it fails when the input is greater than 999. However, this issue can be easily resolved with a simple modification in the template:

<tr>
    <th>SIP maximum</th>
    <td>
       <input id="sipmaximum" name="sipmaximum" type="text" class="form-control"
        [(ngModel)]="sipmaximum" (focus)="fetchSip()"
        (blur)="formatNumber()" style="width: 70%" required greaterThanZero />
    </td>
 </tr>

In the TypeScript file, simply update the datatype of sipmaximum and add a method to handle the formatting:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-test',
  templateUrl: './test.component.html',
  styleUrls: ['./test.component.scss']
})
export class TestComponent implements OnInit {
  
  public sipmaximum: number | string = 9999;

  public ngOnInit(): void {
    this.formatNumber();
  }

  public fetchSip(): void {
    this.sipmaximum = +this.sipmaximum;
  }

  public formatNumber(): void {
    this.sipmaximum = (+this.sipmaximum).toFixed(2);
  }
}

This adjustment will effectively address the issue and successfully handle inputs exceeding 999. Good luck! :)

Answer 2

Although the solution I provided in the comment works, it fails when the input is greater than 999. However, this issue can be easily resolved with a simple modification in the template:

<tr>
    <th>SIP maximum</th>
    <td>
       <input id="sipmaximum" name="sipmaximum" type="text" class="form-control"
        [(ngModel)]="sipmaximum" (focus)="fetchSip()"
        (blur)="formatNumber()" style="width: 70%" required greaterThanZero />
    </td>
 </tr>

In the TypeScript file, simply update the datatype of sipmaximum and add a method to handle the formatting:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-test',
  templateUrl: './test.component.html',
  styleUrls: ['./test.component.scss']
})
export class TestComponent implements OnInit {
  
  public sipmaximum: number | string = 9999;

  public ngOnInit(): void {
    this.formatNumber();
  }

  public fetchSip(): void {
    this.sipmaximum = +this.sipmaximum;
  }

  public formatNumber(): void {
    this.sipmaximum = (+this.sipmaximum).toFixed(2);
  }
}

This adjustment will effectively address the issue and successfully handle inputs exceeding 999. Good luck! :)

Can I combine two decimal values using ngModel in Angular?

Answer №1

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