find if value exists in object in javascript

There are a couple of ways to check if a value exists in an object in JavaScript:

1. Using the hasOwnProperty method: This method checks whether the object has a property with the specified name.

index.tsx
const obj = { name: "John", age: 30 };
if (obj.hasOwnProperty("name")) {
  console.log("Name exists in obj");
}
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2. Using the in operator: This operator checks whether the specified property is in the specified object or its prototype chain.

index.tsx
const obj = { name: "John", age: 30 };
if ("name" in obj) {
  console.log("Name exists in obj");
}
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3. Using the Array.prototype.includes method: This method checks whether the specified value is in the array of object property names.

index.tsx
const obj = { name: "John", age: 30 };
if (Object.keys(obj).includes("name")) {
  console.log("Name exists in obj");
}
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