![]() ![]() Here's the syntax: string.substring(startIndex, endIndex) This means that the extracted substring will include the character at the start index but not the character at the end index. The start index is inclusive, while the end index is exclusive. The substring() method allows you to extract a substring from a given string by specifying the start and end indices. ![]() JavaScript provides two methods for this purpose: substring() and substr(). Now that we know what a substring is, let's learn how to extract one from a given string in JavaScript. How to Extract a Substring in JavaScript? In the mainString above, some examples of substrings could be: - "I love" - "JavaScript" - "ve Java" - "t"Īs you can see, a substring can be any smaller part of the main string. Let's look at an example: let mainString = "I love JavaScript!" Think of a substring as a smaller "piece" of the bigger "cake" (which is the whole string). It can be as short as one character or as long as the entire string itself. Now that we have a basic understanding of strings let's discuss substrings. They are just a sequence of characters, and we can manipulate them in various ways. For example: let string1 = 'Hello, World!' īoth string1 and string2 are examples of strings. ![]() Strings in JavaScript are enclosed in quotes, either single or double. A character can be a letter, number, symbol, punctuation, or even a space. In programming, a string is a sequence of characters. What is a String?īefore we start talking about substrings, let's quickly go over what a string is. We'll dive deeper into this concept, learn how to work with substrings in JavaScript, and understand why they are useful. In simple terms, a substring is a smaller part of a larger string. If you are learning programming or just getting started with JavaScript, you might have come across the term "substring" and wondered what it means. In this blog post, we will explore a concept in JavaScript called "substring". ![]()
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