Category: JavaScript
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How to use for…of loop with an Object in JavaScript
In my last post, I discussed Always Use the for…of loop to iterate in JavaScript. After this post, I got a question that, is it possible to use for…of loop with an object? Means, can you use the for…of loop to iterates properties of an object. Let us try this, let Product = { Id: 1, Title: 'Pen', Price: 1000, sendDetail: () => { } […]
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Always Use the for…of loop to iterate in JavaScript
In JavaScript to iterate over the values of an array, map, object, etc. use the for…of loop. In a specified order, it iterates over the set of values of an iterable object such that array. It would be best if you use a for…of loop for looping. You must have used the for…in loop to […]
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The simplest way to Remove Duplicate Items from a JavaScript Array
You may have often come across a requirement to remove duplicate items from a JavaScript array. There are multiple ways to achieve it. Such that, Using the forEach loop and manually checking for the duplicate values Using the array’s filter method and others Using the Set object Let us say; you have an array as […]
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Using Spread Syntax to Merge Objects in JavaScript
Have you come across a requirement to merge two or more object in another object? Most simply, you can achieve it by using JavaScript Spread syntax (…). Due to its multi functionalities purpose, JavaScript Spread Syntax is one of the most useful operators. You can use it, Rest parameters to a function To merge two […]
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Four Ways to Create a Function in JavaScript
There are four ways a function can be created in JavaScript. They are as follows: A function as a statement A function as an expression A function as an arrow function A function created using the Function constructor All four ways of function creation have distinct features such as an arrow function that does not […]
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A JavaScript function inside a Block Scope: Simplified
Scoping determines the visibility of a variable, an object, or a function. For example, a variable defined inside a function is visible or can be accessed only inside that particular function. JavaScript has 4 types of scope. Global scope Functional scope Lexical Scope Block Scope Out of the above four scoping, Block Scoping became […]
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How to manually pass the value of ‘this’ object in a JavaScript function
Every JavaScript function has a ‘this’ object, and the value of ‘this’ object depends on the way you call the function. To pass the value of ‘this’ manually, you need to call the function indirectly. In JavaScript, you call a function indirectly to pass the value of ‘this’ object manually. Manually calling a function is […]
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How to make a property non-enumerable in JavaScript?
By default, all the properties of JavaScript objects are enumerable. That means you can enumerate them in a for loop or read them using the Object.values(). Let us consider an object Dog as shown below, You can enumerate all properties and read their values using the for loop or Object.values() method as shown below, Now […]
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How to merge arrays using spread operator in JavaScript?
Have you come across a requirement to merge two or more arrays into another array? Let us say, you have two arrays as shown below, You need to merge them in another array with optional extra elements in the resultant array. JavaScript array spread operator makes it very simple to merge arrays. You can merge […]
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How to create Private Properties in JavaScript.
We don’t have Access Modifiers in JavaScript, and all properties of an object are public, which means you can read and modify them outside the object. But what if you have a requirement to create private properties? Consider Product object as mentioned below, By default, JavaScript allows you to read and modify all the properties. […]
Dhananjay Kumar 