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Imran Alam has Published 54 Articles

Imran Alam
2K+ Views
In this tutorial, we'll be implementing a queue using only two stacks. This is a pretty common interview question so it's good to know how to do it. Algorithm STEP 1 − We have two stacks, one for enqueueing and one for dequeueing. STEP 2 − We enqueue by ... Read More

Imran Alam
3K+ Views
JavaScript has a built-in function called replace() that can be used to replace characters in a string. This function takes two arguments: the first argument is the character or characters to be replaced, and the second argument is the character or characters to replace them with. Syntax Following is the ... Read More

Imran Alam
6K+ Views
With a little bit of JavaScript and DOM manipulation, you can create all sorts of interesting patterns on a webpage. In this tutorial, we'll show you how to create a chessboard pattern using JavaScript and the DOM.ApproachSTEP 1 − We start by creating a element with an id of ... Read More

Imran Alam
502 Views
Function.prototype.apply and Function.prototype.call are methods that allow you to call a function with a specific this value and arguments. The main difference between the two is that apply lets you pass in an array of arguments, while call requires you to list the arguments one by one.Function.prototype.applyFunction.prototype.apply is a method ... Read More

Imran Alam
1K+ Views
The CSV (Comma Separated Values) file format is a popular way of exchanging data between applications and data stores. The CSV file format is simple and easy to understand, and many applications and programming languages support it.In JavaScript, there are a number of ways to convert an array of data ... Read More

Imran Alam
491 Views
In JavaScript, We can use the reduce() method to apply a function against an accumulator and each key of an object (from left to right).The reduce() method is called on a given array and takes in a callback function as its first argument. Please refer to Array reduce() for more ... Read More

Imran Alam
533 Views
In this tutorial, we'll be discussing how to get the sum of the powers of all the numbers from start to end in JavaScript. We'll be using the built-in Math.pow() method to calculate the powers and the Array reduce() method to sum up the values.Using the Math.pow() methodThe Math.pow() method ... Read More

Imran Alam
2K+ Views
We could apply String split(), Array sort() and Array join() methods to write a function that returns a passed string with letters in alphabetical order in JavaScript. A JavaScript function is a block of code that is executed when it is invoked. A string is a sequence of characters. In ... Read More

Imran Alam
2K+ Views
JavaScript provides two functions for dealing with encoded strings: escape() and unescape(). The escape() function is used to encode a string, making it safe for use in a URL. The unescape() function is used to decode an encoded string.The differencesThe main difference between the two functions is that escape() encodes ... Read More

Imran Alam
7K+ Views
In JavaScript, there are two main ways that a variable can be "undefined". The first is when you declare a variable without giving it a value. The second is when you try to access a variable that does not exist.Undefined in JavaScript When a variable is declared without a value, it ... Read More