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In this article we are going to learn how to clear the JavaScript Console in Google Chrome. We have various methods to clear the console; but our question is why do we need to clear the console? Sometimes we have lots of commands and logs printed in any browser console which makes it look substandard and packed with output. So, we need to clear the console. And there are multiple ways to clear the console of google chrome. Using the console.clear() method This method will clear the console and display the message on the console that the console was clear. ... Read More
In this article, we are going to discuss how to create keys in a JavaScript associative array dynamically. Associative arrays are dynamic objects that are user defined as needed. When you assign values to keys in a variable of types array, then the array is transformed into an object, and it loses the attributes and methods or array. i.e. the length attributes have no effect because the variables are no longer of the type array. JavaScript associative arrays are same as any other literals. You can add keys to these using the square brackets notation you can add keys to ... Read More
In this article we will discuss about how a variable scope works in Python function. The scope of a name is the area of a program in which you can clearly access a name, such as variables. Hence, a variable scope is the region in which we can access a variable as shown in the following example - def multiplication(): product = 7*9 Here, the “product” variable is created inside the function, therefore it can only be accessed within it. In general, the python scope concept is presented using the rule called as the ... Read More
Ember.js is the best framework. The user of Ember.js is increasing day by day. The popularity of ember.js is 6.3% of JavaScript developers currently using ember. Its popularity has stood over the last two years. Ranked 4th most popular JavaScript framework. Ember.js is an MVVM (Model−view−view−model) model framework for complex and multiple-page applications and it is an open-source framework. It is a very redefined control system that helps you to integrate with the new version without any problems. Ember.js is a free javascript client-side framework it is used for developing web applications. It is providing the complete solution which contains ... Read More
The preload attribute specifies how the author thinks about the media file should be loaded when the page loads. The preload attributes allow the author to provide hints to the browser about how much time should take to load a page, it will lead to the best user experience. Preload also tells the browser about critical resources that you want to load as soon as possible. This is especially useful for resources that are not easily appreciable, such as fonts included in stylesheets, background images, or resources loaded from a script. Using preload helps here because the images start loading ... Read More
We can set a countdown timer in JavaScript using the setInterval() method. This method continuously calls a function or executes a code snippet with a fixed time delay between every call. The setInterval() method calls a function at described intervals in milliseconds. It continues calling the function until the clearInterval() is called, or the window is closed. SyntaxFollowing is the syntax of this method − setInterval(function, milliseconds); The setInterval method accepts two parameter functions and milliseconds. function − A function containing a block of code designed to perform a particular task. milliseconds − it is the time interval ... Read More
In this article, we will learn about various methods to get the size of a JSON object in JavaScript. Getting the size of the object in JavaScript is same as the counting the total number of keys of an object. In general, we can get the size or number of keys of a JSON object in JavaScript by using two methods. Using object.keys() The object.keys() method returns an array of the given object of its countable properties name with the same order as we get as a normal loop. Following is the syntax of this method − Object.keys(name_of_object).length; ... Read More
In JavaScript, there are various approaches to add a class to an element. We can use the .className attribute or the .add() method to add a class name to the specific element. The class attribute can be used in CSS to perform some tasks for the elements with the parallel class name. Using the className Property We can use this property to add a class to an HTML element without restoring its existing class. This property can be used to execute the value of the class attribute of an element. If a class is already declared for an element, ... Read More
The JavaScript Map is the data structure that helps us to store the data in the form of pairs. The pairs consist of a unique key and value mapped to the key. It helps to prevent duplicity. The JavaScript Object also follows the same concept as that of a map i.e. key−value pairs for storing data. But there are slight differences that make the map a better performer in certain situations Let us look into these differences between a Map and an Object further in this article. Map vs Object Following are the major differences between Map and Object ... Read More
In this article, we are going to discuss how to detect the version of a browser using JavaScript. These days, most browsers are JavaScript−enabled. But still, there are some browsers that don’t support JavaScript; or, some versions of some browsers don’t support certain features of JavaScript. Therefore, in certain instances, there is a need to know the details of the client’s web browser so that the applications can deliver appropriate content. Detecting the Version of a Browser You can detect the details of the current browser using navigator.appName and navigator.appVersion properties. To detect the version of the browser in the ... Read More