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Javascript Articles
Page 196 of 534
Is it possible to change the value of the function parameter in JavaScript?
In this article we are going to find out whetehr it is possibleto change the value of the function parameter in JavaScript. A function accepts a certain values as parameters an later while calling this function we need to pass values for these parameters as arguments. Typically a function definition contains the name of the function, parameters (optional) and the body of the function.Syntax Following is the syntax for function parameter − function Name(paramet1, paramet2, paramet3, paramet4) { // Statements } Yes, it is possible to change the value of the function parameter in JavaScript. ...
Read More10 Interesting things you can do with a few lines of JavaScript
In this tutorial, let us discuss some fascinating things that a few lines of Javascript can do. Almost every website uses JavaScript. JavaScript was born in 1995, and it is a programming language similar to other languages, but it runs faster because it doesn't have many predefined functions. JavaScript can create programs, libraries, and scripts for websites or desktop applications. A lot of web developers are also good at writing JavaScript. Some JavaScript codes are fascinating if you observe how it behaves. Let us discuss what are these fascinating things in JavaScript. Fascinating things about the semicolon The end of ...
Read MoreHow to assign a PHP variable to JavaScript?
PHP tags with single or double quotes assign a PHP value to a JavaScript variable when setting a PHP variable. Several times you might need to put PHP variable values in JavaScript. You may easily echo on the JS variable with a PHP tag if there are only simple variables, such as a string or any integer. Understanding the sequence of actions when you access a PHP website is necessary before passing a variable from PHP to JavaScript. To create the HTML, the PHP will first run your.php file. Your code will be delivered to the client's browser when PHP ...
Read MoreExtract unique objects by attribute from an array of objects in JavaScript
We will learn to extract unique objects by attribute from an array of objects in this tutorial. Sometimes, we need to filter objects from the array of objects based on a particular attribute. For example, we have an id as a key to identify the object. So, we need to ensure that the array contains only a single object with a single id. If two or more objects contain the same primary key value, it can cause the problem of uniquely identifying objects. Here, we will learn different approaches to filter all unique objects from the array based on a ...
Read MoreExplore the concept of JavaScript Function Scope and different types of JavaScript Functions
In JavaScript, various scopes allow us to access the functions and variables from different places in our code. We will learn about the function scope in this tutorial. Also, we will explore the different types of function expressions in JavaScript. Function Scope When we create a new function in JavaScript, it also creates the scope for that particular function. It means that whatever variables we declare inside the function or define the nested function inside it, we can only access it inside the function block. If we try to access the variables defined inside the function block from outside the ...
Read MoreExplain the purpose of the ‘in’ operator in JavaScript
This tutorial will teach about the ‘in’ operator in JavaScript. There are many operators available in JavaScript, such as arithmetic operators to perform mathematical operations, assignment operators, equality operators, etc. The ‘in’ operator is also one of them, which we can use to find properties from the object. Before we start, let me ask you a question. Have you ever needed to check for the existence of the object's properties while coding with JavaScript? If yes, how did you deal with it? The answer is simple you can use the ‘in’ operator, which returns the Boolean value based on whether ...
Read MoreExplain sub-classes and inheritance in ES6
In JavaScript, developers used the prototype to inherit the function with another function in ES5. In the ES6, classes introduced in JavaScript can be used for inheritance as other programming language does. What are sub-classes and inheritance? As the subclass word represents, it is a child class of another class. We can use inheritance to create or derive a subclass from the superclass, and we can call the class to a superclass from which we derive the class and the sub-class to the derived class. The subclass contains all the properties and methods of the superclass, and we can access ...
Read MoreCan JavaScript be used for Android Development?
Since smartphones are so close to people, mobile app development has begun to influence the world. A combination of languages, primarily JavaScript, CSS, and HTML, is utilized to construct all types of coding. The development of mobile apps is now one of the most crucial areas of current technology developments. The process of creating a mobile app involves a variety of technologies and procedures. Coding, which uses a range of languages to accomplish the process, is one of the most crucial components. JavaScript is a computer language that developers like due to a wide range of advantages. Major developers always ...
Read MoreTop JavaScript Best Practices and Standards to Know
JavaScript is a popular programming language that is widely used for building web applications. It is a powerful and flexible language that can be used to create a wide variety of applications, from simple scripts to complex programs. Some common practices for writing JavaScript code − Name things by their name. It is easy because they are short and easy to read. Avoid using global variables. These are general variables in a program. It is tough to understand what is happening in the code. It also leads to problems when the code is changed. Coding style is significant so that ...
Read MoreTop Reasons to Learn JavaScript
Learning a new programming language is an additional advantage to a developer. Before learning JavaScript, developers should get a basic idea of HTML and CSS. You will be wondering why it is essential to learn JavaScript. Other programming languages are also available in Information Technology. Of course, all programming languages are necessary for a developer. But JavaScript is the foundation for all. Knowing HTML, CSS and JavaScript make you an adaptable developer. Popular Both front-end developers and back-end developers use JavaScript. Among 1.8 billion websites in the world, 95% of the websites use JavaScript. Easy JavaScript is easy for those ...
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