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The article looks at the different ways to get the keys of an object in JavaScript. You will become intimately familiar with the necessary toolkit for extracting keys. It allows us to use varied techniques like Object.getOwnPropertyNames() and Object.keys() that make the solution of the task possible. In the sections below, we will analyze their drawbacks and advantages,…

In this article, we’ll look at different ways to get part of a string in JavaScript. substring(startIndex, endIndex) and slice(startIndex, endIndex) are the build-in methods we’ll use to get part of a string in JavaScript: Get part of a string in JavaScript by index As you can see in the above table, slice() and substring()…

In this article, we’ll look at how to capitalize the first letter of each word in a string in Javascript according to its characteristics. We’ll investigate different ways of approaching the task and how we can divide it to find the solution that best fits our needs. Related articles: Consider the peculiarities of the input…

Check if a number is a whole number in JavaScript The Number.isInteger() method determines whether the passed value is an integer. It returns true if the value is a whole number, and false otherwise. In the example above, we defined a variable `number` with the number you want to check and passed it to the…

To capitalize the first letter of a string use the charAt() method to get the first character, save it in a new variable, then call toUpperCase() to capitalize it. Extract the other part of the string in another variable using the slice() method, then concatenate the new variables.

Remove a Specific Item From an Array in JavaScript remove approach description occurrence the first item shift() Removes the first item of an array. — the last item pop() Removes the last item of an array. — an item by index splice() Removes an item by index and the method takes the index as an…

1. Find the Smallest Number in an Array in Javascript The shortest way to find the smallest number in an array in JavaScript is to use the built-in static method Math.min(). Math.min() returns the smallest of the numbers which it takes as input parameters. The arguments are given separated with commas, for example, Math.min(1, 2,…

1. Find the Largest Number in an Array in Javascript The shortest way to find the largest number in an array in JavaScript is to use the built-in static method Math.max(). Math.max() returns the largest of the numbers which it takes as input parameters. The arguments are given separated with commas, for example, Math.max(1, 2,…