JavaScript

When iterating through an array in JavaScript, the fastest method will depend on the specific use case and the size of the array. In general, if you are looking for a specific element in an array and you want to know if the element exists in the array, the Array.prototype.includes() method will be faster than …

Is using includes() faster than do-while when iterating trhough an array in Javascript? Read More »

JavaScript provides the localStorage and sessionStorage objects, which can be used to store key-value pairs of data in the browser. The difference between the two is that localStorage stores data permanently, while sessionStorage stores data for a single session (data is lost when the browser tab is closed). Here are a few examples of how …

Using localStorage in Javascript Read More »

In JavaScript, the Object object has several methods available to it, including: Please note that this list is not exhaustive, and there are some additional methods that you can use depending on the JavaScript engine and environment you are running.

In JavaScript, let and const are used to declare variables. The main difference between them is that variables declared with let can be reassigned new values, while variables declared with const cannot be reassigned after they are initialized. Here are a few examples: Using let: Using const: In summary, you should use const to declare …

Difference between let and const in Javascript Read More »

The map() method in JavaScript is used to create a new array with the results of calling a provided function on every element in the calling array. Here are a few examples: Note that the map() method does not modify the original array, it returns a new array with the modified elements.