In this article, we will cover how to check if a Set contains an object in JavaScript. To achieve this, we need to use the `has()` method on our `Set` and pass the object as an argument. The `has()` method returns `true` if the object exists inside the `Set` or `false` if the object does … Read more
In this article, we will cover how to check if a JavaScript object contains a function as one of its properties. To achieve this, we will use the `typeof` operator on the object property and check if it returns a string result that is equal to `function`. First, let’s create an object and initialize it … Read more
In this article, we will cover how to access object with space in key in JavaScript. To achieve this, we will use the `[]` bracket notation in order to access the property of the object in `string` format and to be able to add the space in the key name. First, let’s create an object … Read more
In this article, we will cover how to check if a JavaScript object is of type Set. To achieve this, we will use the `instanceof` operator. We will check if the `prototype` property of the object `constructor` matches the `prototype` of `Set` object. Check If A JavaScript Object Is Of Type Set First, let’s create … Read more
In this article, we will cover how to get a data attribute from the event object in JavaScript. To achieve this, we need to use the `target.dataset` property to access data attributes from the `event` object. The `dataset` property returns a `Map` of strings. For this tutorial, we can use some HTML code, to create … Read more
In this article, we will cover how to swap a JavaScript object’s keys and values. To achieve this, we will use the `Object.entries()` method to get an array of the object’s key-value pairs. Then, we will need loop over the array using the `map()` method and swap keys with values and store the output in … Read more
In this article, we will cover how to set all properties inside a JavaScript object to false. To achieve this, we need to generate an array from the object keys using the `Object.keys()` method and then iterate over the generated array and change the corresponding value for each key to `false`. Set All Properties Inside … Read more
In this article, we will cover how to access an object’s key that contains hyphen `-`. To achieve this, we will use the `[]` bracket notation in order to access the property of the object in `string` format and to able to add the hyphen `-` in the key name. Access An Object’s Key That … Read more
In this article, we will cover how to get random property from a JavaScript object. To achieve this, we need to create an array from the object keys using the `Object.keys()` method and then get a random value using the `random()` method from the `Math` object. Then, we can use the `floor()` method from `Math` … Read more
In this article, we will cover how to convert object values to comma separated string in JavaScript. To achieve this, we need to create an array from the object values using the `Object.values()` method and then use the `join()` method on the generated array passing in `,` as an argument to specify the join character. … Read more