得到的字符串,"HELLO WORLD", 被赋值给变量upperStr. Javascript conststr ="hello world";constupperStr = str.toUpperCase();console.log(upperStr);// Output: "HELLO WORLD" 输出 HELLO WORLD 注:amanv09
In JavaScript string or character is to be converted into uppercase using str.toUpperCase() method this is used for converting entire strings into the Upper case format. Whenever we used toUpperCase() method the return value is to be string format and has converted into the uppercase the value...
JavaScript provides several built-in methods for manipulating strings, including one calledtoUpperCase()which can be used to convert the first letter of a string to uppercase. Here is an example of how to use thetoUpperCase()method to make the first letter of a string uppercase: ...
JavaScript comes bundled with a string method called toUpperCase, which could be used to capitalize the whole string. However, it does not provide a method that could capitalize only the first letter of a specific string. In this article, we'll learn to build a functionality that could capital...
toUpperCase() Method The toUpperCase() method transforms a string into uppercase letters in JavaScript. It doesn't change the original string and returns a new string equivalent to the string converted to uppercase. Here is an example: const str = 'JavaScript World!' // convert string to upp...
We used the String.toUpperCase() method to convert each string in the array to uppercase. The Array.map() method returns a new array, it doesn't change the original array. Alternatively, you can use the Array.forEach() method.
In the exercise above, The code defines a JavaScript function named "upper_am_pm()" with one parameter 'dt', representing a Date object. Inside the upper_am_pm function: It checks if the hour value of the provided Date object "dt" (obtained using "getHours()" method) is less than ...
To convert all elements in an array to lowercase, you can use another JavaScript method calledString.toLowerCase()as shown below: constnames=['Ali','Atta','Alex','John'];constlowercased=names.map(name=>name.toLowerCase());console.log(lowercased);// ['ali', 'atta', 'alex', 'john...
Uppercase the First Letter in Input Field Question: As I'm honing my JavaScript skills, I'd appreciate your feedback on the script I created to capitalize the first letter of an input value. I've successfully implemented this method, but I'm open to other suggestions to improve it, inclu...
To handle special characters that are not detected by basic checks like/[a-zA-Z]/.test(c), utilizing ECMAScript case transformation (toUpperCase) can be advantageous. This method considers non-ASCII Unicode character sets found in certain foreign languages. ...