Tips for dynamically altering the bound variable in Angular

Most people understand the concept of interpolation and how to interpolate a single variable with ease. However, what if we need to dynamically switch between two different variables? Let's say we have two class properties:

public first: string = '"first" variable activated';
public second: string = '"second" variable activated';

And we also have two radio buttons that are bound to the activeVariableName class property:

<input type="radio" value="first" [(ngModel)]="activeVariableName">
<input type="radio" value="second" [(ngModel)]="activeVariableName">

Typically, we would interpolate like this:

<h1>{{activeVariableName}}</h1>

However, this will only display the names first or second, which are the class property names.

So, the question arises: "How can we display the values of these properties instead of just their names?"

For a live example, check out this STACKBLITZ

Answer №1

Ensure to include the binding brackets [] to correctly assign the values as first and second. Here is the updated code snippet:

<input type="radio" [value]="first" [(ngModel)]="activeVariableName">
<input type="radio" [value]="second" [(ngModel)]="activeVariableName">

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