In Python, you can easily check whether a number is odd or even by using the modulus operator (%). A number is considered even if it produces a remainder of 0 when divided by 2. On the other hand, if a number produces a remainder of 1 when divided by 2, it is considered odd. To check if a number is even or odd using an if conditional, you can follow these steps:...
Checking if a string contains a substring is a common task in JavaScript programming. In this blog, we will explore different ways to accomplish this and find the best approach to use. The simplest and preferred method is to use the includes() method on a string. Introduced in ES6/ES2015, this method returns true if the string contains the specified substring, and false otherwise. 'a nice string'.includes('nice') // true Please note that includes() is supported in all modern browsers except Internet Explorer....
Checking if a string starts with another substring is a common task in JavaScript. In this article, we will explore how to perform this check efficiently using the startsWith() method introduced in ES6. ES6, released in 2015, introduced the startsWith() method, making it easier to check if a string starts with a specified substring. This method is now the preferred approach in modern JavaScript. To use startsWith(), simply call the method on any string instance and pass in the substring you want to check....
When working with variables in Python, it’s often necessary to determine whether a variable is a number. There are a few simple methods you can use to achieve this. Method 1: Using the Type Function One way to check if a variable is an integer is by using the type() function. This function takes the variable as an argument and returns its type. To check if a variable is an integer, you can compare the result of type() to the int class....
When working with events in JavaScript, you may need to determine if a clicked element is a descendant of a specific parent element. In this tutorial, I will show you how to accomplish this task using a loop. To begin, assign an id to the parent element that you want to check against. For this example, let’s assume the parent element has an id of “mycontainer”. Next, create a function called isDescendant that takes two parameters: the clicked element (el) and the id of the parent element (parentId)....
Learn how to determine if a variable corresponds to an empty object. If you need to check whether a value is equal to an empty object created using the object literal syntax const emptyObject = {}, there are several ways to do it. One method is by using the Object.entries() function, which returns an array containing the enumerable properties of an object. By calling Object.entries(objectToCheck), you can check if it returns an empty array....
Are you looking to determine if two date object instances in JavaScript refer to the same day? JavaScript doesn’t come with built-in functionality for this, but you can easily implement it using a few methods. The getDate() method returns the day, the getMonth() method returns the month, and the getFullYear() method returns the four-digit year. By comparing these values between two date objects, you can check if they represent the same day....
To check the current Node.js version at runtime, you have a few options. The first option is to use the version property of the process object. By running process.version, you will receive a string that represents the current Node.js version. Here is an example: console.log(process.version); However, please note that this approach will result in a ReferenceError in the browser, as the process object is not defined there. Alternatively, you can use process....
Knowing the version of Python your program is running on can be essential for compatibility and debugging purposes. In this article, we will explore how to check the current Python version at runtime. To get started, you need to import the sys module from the standard library: import sys Once you have imported the sys module, you can access the sys.version_info property to retrieve the Python version. This property returns the version as a tuple....
If you’re familiar with TypeScript, you know that it’s a language introduced by Microsoft that adds types to JavaScript. While TypeScript can be beneficial, especially for larger projects, it may not always be the best choice for beginners or for those who prefer to stick to the fundamentals of the Web Platform. However, there are times when having types in JavaScript can be helpful. Fortunately, there is a way to add types to JavaScript without using TypeScript, and it involves using VS Code....