The filter is an array function in vanilla.js which returns a new array by filtering the filter item provided to the filter function.
Here is ES6 syntax for this function:
This function basically executes a given function provided to it. It Read more…
The “this” keyword of JavaScript causes confusion for people, who start to use Javascript language and mainly for those who start after using the other languages. Here the main question is how to use “this” in the right way in a callback function.
function Read more…
Many browsers now have the facility to access video and audio input from the user. However, relying on the browser, it would be a full dynamic and inline experience, or it’d be delegated to a special app on the user’s device.
Many browsers now have the power to access video and audio input from the user. However, counting on the browser, it’d be a full dynamic and inline experience, or it might be delegated to a different app on the user’s device. Here we will learn Read more…
RxJS is a popular library among web developers. It provides some features like functional and reactive programming patterns that support working with events and streams. Rxjs provides the functionality to write asynchronous code. The current stable version is Rxjs v6.
RxJS 6 has many advantages Read more…
In javascript, equality operator == or === can be used to compare numerics and strings. But when we will compare objects using these operators, then it will not work as expected because objects use references. So, equality operators Read more…
Arrow function was introduced in ES6, which provides a better and shorter way to write functions in JavaScript. Its another advantage is that it does not bind its own “this”. We can also say that the context inside arrow functions is lexically or statically set.
Syntax Read more…
I have already written a blog on this topic. Please refer to the following link for detail: Click This Link
I will show another solution to add a number of days to a date string. The solution provided in the above link works well and gives an Read more…
Open the Developer Options setting on your Android Device. If you are not able to see the developer option then you need to enable it.
a. Go to your Read more…
A Javascript module is a collection of Javascript code. It enhances the reusability of this code. As a result, it is called/used from alternative javascript files.
These modules are written by using the AMD(Asynchronous Read more…
The various methods I am going to discuss below are a part of functional programming in Javascript. In functional programming output of the method depends on the arguments passed to the method. In Javascript, we have Read more…
Here is a simple approach to invoke file download operation in the browser for bytes array available on the server:
I am receiving the file in the format of bytes array from Read more…
Selenium is an open source automation testing tool. It is used to test the web application. Selenium supports multiple languages to create an automation script such as Java, Python, PHP, C#, Ruby.
In case we want to test with Read more…
A callback is a function that can be called on the completion of a given task to prevent blocking. As a result of it other code will run without waiting for a task to complete. This feature makes node.js highly scalable as it Read more…
