How do I make the first letter of a string uppercase in JavaScript? Ask Question Asked 14 years, 6 months ago Modified 7 days ago Viewed 4.0m times 5172 How do I make the first character of a string uppercase if it's a letter, but not change the case of any of the other letters? For example: "this is a test" → "This is a test" toUpperCase is a string method that returns the uppercased version of a specified string. We will use this to capitalize the first letter: const firstLetter = "f" const firstLetterCap = firstLetter.toUpperCase() // F How to capitalize the first letter of a word in JavaScript
JavaScript Uppercase the First Letter of a String
JavaScript toUpperCase () Function: This function applies on a string and changes all letters to uppercase. Approach 1 : JavaScript slice () Function This function applies to a string and slices it according to the passed parameter. Syntax: string.slice (start, end) It's one of the most common operations with strings in JavaScript: uppercase its first letter, and leave the rest of the string as-is. The best way to make the first character uppercase is through a combination of two functions. In JavaScript, we have a method called toUpperCase (), which we can call on strings, or words. As we can imply from the name, you call it on a string/word, and it is going to return the same thing but as an uppercase. For instance: const publication = "freeCodeCamp"; publication[0].toUpperCase(); Capitalizing the first letter of a JavaScript string is easy if you combine the string toUpperCase () method with the string slice () method. const str = 'captain Picard'; const caps = str.charAt (0).toUpperCase () + str.slice (1); caps; // 'Captain Picard'
Javascript uppercase first letters
JavaScript Program to Convert the First Letter of a String into UpperCase To understand this example, you should have the knowledge of the following JavaScript programming topics: JavaScript String Javascript String toUpperCase () JavaScript Function and Function Expressions Example 1: Convert First letter to UpperCase To capitalize the first letter of a random string, you should follow these steps: 1. Get the first letter of the string; 2. Convert the first letter to uppercase; 3. Get the remainder of the string; 4. Concatenate the first letter capitalized with the remainder of To capitalize the first letter of a string in JavaScript: Use the charAt () function to isolate and uppercase the first character from the left of the string. Use the slice () method to slice the string leaving the first character. Concatenate the output of both functions to form a capitalized string. const phrase = 'example' const output. importance: 5 Write a function ucFirst (str) that returns the string str with the uppercased first character, for instance: ucFirst("john") == "John"; Open a sandbox with tests. solution
How to uppercase the first letter of a string in JavaScript
Step1: The argument string passed in function firstLetterCapitalize () is the string to be processed. Hence, the first character of this string is capitalised by _string.charAt (0).toUpperCase (). Step2: To the new string formed by _string.charAt (0).toUpperCase () rest of the string is added which is other than the first character and is. To achieve the capitalization of the first letter of a given string in JavaScript, we would use three functions. charAt () toUpperCase () slice () charAt (): The charAt () function returns the character at a given position in a string. Syntax: string. charAt (index) Example:
JavaScript capitalize first letter. When it comes to common string operations, turning the first letter uppercase is a common thing. To achieve the same, you need to use two functions. The first function will uppercase the very first letter. The second function will return the string starting from the second character. To capitalize the first letter in a string is easy if you undertake some steps. First of all you should get the first letter of the string by setting the charAt () method at 0 index: Watch a video course JavaScript -The Complete Guide (Beginner + Advanced)
JavaScript Uppercase first letter in a string YouTube
21 Answers Sorted by: 41 The return value contain 2 parts: return word [0].toUpperCase () + word.substr (1); 1) word [0].toUpperCase (): It's the first capital letter 2) word.substr (1) the whole remain word except the first letter which has been capitalized. This is document for how substr works. Refer below result if you want to debug: Description The toUpperCase () method returns the value of the string converted to uppercase. This method does not affect the value of the string itself since JavaScript strings are immutable. Examples Basic usage js console.log("alphabet".toUpperCase()); // 'ALPHABET' Conversion of non-string this values to strings
