how to use the hasownproperty function from the rxjs library in javascript

To use the hasOwnProperty function from the RxJS library in JavaScript, you can follow these steps:

1. Import the hasOwnProperty function from the rxjs/util/hasOwnProperty module:

index.tsx
import { hasOwnProperty } from 'rxjs/util/hasOwnProperty';
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2. Use the hasOwnProperty function in your code:

index.tsx
const obj = { prop1: 'value1', prop2: 'value2' };

if (hasOwnProperty.call(obj, 'prop1')) {
  console.log('obj has prop1');
} else {
  console.log('obj does not have prop1');
}

if (hasOwnProperty.call(obj, 'prop3')) {
  console.log('obj has prop3');
} else {
  console.log('obj does not have prop3');
}
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In this example, we import the hasOwnProperty function from the rxjs/util/hasOwnProperty module and then use it to check if the obj object has the prop1 and prop3 properties. The call method is used to call the hasOwnProperty function with the obj object and the property name as arguments.

Note that the hasOwnProperty function is used to check if an object has a property that it owns. If the property is inherited from the object's prototype chain, the function will return false.