In this article, we'll learn to build a functionality that could capitalize only the first character of the string. Let's consider an example: const message = 'hello world!'; Let's say I want to make the h in the above string to uppercase. I could do that by selecting the first...
In JavaScript, toUpperCase() is a string method that is used to convert a string to uppercase. Because the toUpperCase() method is a method of the String object, it must be invoked through a particular instance of the String class. Syntax In JavaScript, the syntax for the toUpperCase() me...
To check if the first letter of a string is uppercase: Use theString.charAt()method to get the first letter of the string. Use theString.toUppercase()method to convert the letter to uppercase. Compare the result to the letter. index.js ...
const str = "HELLO WORLD"; const lowercased = str.toLowerCase(); // "hello world" // toUpperCase():将字符串中的所有字符转换成大写字母。 const str = "hello world"; const uppercased = str.toUpperCase(); // "HELLO WORLD" // trim():去除字符串两端的空格,并返回新的字符串。 const st...
JS Array Methods JavaScript: String toLocaleUpperCase() methodThis JavaScript tutorial explains how to use the string method called toLocaleUpperCase() with syntax and examples.Description In JavaScript, toLocaleUpperCase() is a string method that is used to convert a string to uppercase based on local...
UseString.toUpperCase()to transform all text in a string to uppercase. vartext='This sentence has some MIXED CASE LeTTeRs in it.';// returns "THIS SENTENCE HAS SOME MIXED CASE LETTERS IN IT."varupper=text.toUpperCase(); Source https://vanillajstoolkit.com/reference/strings/string-touppercas...
Learn how to convert a string to uppercase in TypeScript with simple examples and explanations.
In this example, we retrieve a specific character in the string using the charAt() method and try to convert it to uppercase using the toUpperCase() method.Open Compiler JavaScript String toUpperCase() Method const str = "Tutorialspoint"; document.write("String str = ", str...
string-in-js provides the following functions for string manipulation: capitalizeString(string) Converts the first character of a string to uppercase. Example: const{capitalizeString}=require('string-in-js');console.log(capitalizeString('hello'));// Output: Helloconsole.log(capitalizeString('world...
js uppercase the first letter of string js String.toUpperCase `-webkit-border-image`.split(`-`).filter(i=>i !=="").reduce((acc, i) =>acc += i)// "webkitborderimage"`-webkit-border-image`.split(`-`).filter(i=>i !=="").reduce((acc, i) =>acc += i[0].toUpperCase() +...