In this video, we are going to have a look at undefined and not defined in JavaScript. These terms might seem to be similar, but they have a very simple difference. Basically, when we are creating a variable, and not assigning any value to it, in such a situation, the type of the variable is […]
Undefined vs not defined in javascript Read More »
In this video, we are comparing the two comparison operators in JavaScript, which are the == and === operators. These operators are used for checking the equalness of the operands. When we are using the == operator, we get true if the operands are equal. On the other hand, we use === for strict equalness,
Difference between == and === in JavaScript Read More »
Javascript Date Objects Many times, there might be a requirement of working with dates on our website or web application. In such situations, we can make use of the JavaScript date objects. Now, we are going to explore the data objects in javascript. Javascript Date Objects We will have a look at how can we
Javascript Date Objects Read More »
Deleting some specified element from the map (delete method) At times, there might be some situations, when we need to delete some element from the map object. In such situations, we can make use of the delete method. Here, we need to pass the key, which we want to delete. If the key-value pair was
JavaScript Map delete() Method Read More »
Getting a new iterator object containing values from the Map(values method) Now, we are going to have a look at a method, with which, we can get an iterator object, which contains the values for each element in the map object in the insertion order. The method that we are going to have a look
JavaScript Map values() Method Read More »
Getting a new iterator object containing keys from the Map (keys method) Now, we are going to have another method, through which, we get a new iterator object, which contains the keys for each element in the map, in their original insertion order. In short, we are going to get an iterator object, which contains
JavaScript Map keys() Method Read More »
Checking if the Map has the specified key (has method) Now, let’s have a look at another method, which is going to help us find whether or not, some key is there on the map, associated with some value. So, we are going to give some key name as input, and then it is going
JavaScript Map has() Method Read More »
Getting the value associated with the key(get method) Now, we have the key-value pairs on the Map, and now we are going to concentrate on how can we get the value associated with the key from the Map. We got a method for this, which is the get method. With this method, we just have
JavaScript Map get() Method Read More »
Setting the key-value pairs in the Map (set method) Now, we know how to create the Map object, and we have created one, but how about adding some key-value pairs to the Map? Well, we can do this, using the set method. Let’s have a look at the program now, through which, we are going
JavaScript Map set() Method Read More »
Map in JavaScript A map is an object that holds key-value pairs, in the original insertion order of the keys. We can use any value(value of any type) as a key, and as valuable as well. To understand this, let’s take an informal example, which would give us an idea, about what are the key-value
