Lowercase all letters in a string except the first letter and capitalize first letter of string ? -javascript

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i.e If I have an input string:

input = 'hello World, whatS up?'

I want an output string:

desiredOutput = 'Hello World, whats up?'

If the first letter of any word in the string is already in Upper case , leave it as is.

function upperCaseFirstLetter(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}

function lowerCaseAllWordsExceptFirstLetters(string) {
    return string.replace(/\w\S*/g, function (word) {
        return word.charAt(0) + word.slice(1).toLowerCase();
    });
}

var input = 'hello World, whatS up?';
var desiredOutput = upperCaseFirstLetter(lowerCaseAllWordsExceptFirstLetters(input));

console.log(desiredOutput);

How to change uppercase and lowercase text in Microsoft Word, How do I change all caps to lowercase except the first letter in Word? In this quick tutorial, you will learn how to capitalize the first letter of a string in Java. Unfortunately, the String class in Java does not provide any method to capitalize string. However, there are methods available to change the case of the string (uppercase, lowercase, etc.). Using String.substring() Method

I was trying to do the same and i found a shorter way to do it :

function formatString(str) {
  return str
  .replace(/(\B)[^ ]*/g,match =>(match.toLowerCase()))
  .replace(/^[^ ]/g,match=>(match.toUpperCase()));
}

var text = "aaa BBB CCC";
console.log(formatString(text));

Change the case of text, How do you change all caps to lowercase in Excel except the first letter? Capitalize the first character of the given string: 2.30.16. Centers a String in a larger String of size size using the space character (' '). 2.30.17. Centers a String in a larger String of size size. Uses a supplied String as the value to pad the String with. 2.30.18. Centers a String in a larger String of size size.

word = word.charAt(0) + word.substring(1).toLowerCase();

How to Change Case in Excel: Capitalize First Letter (or ALL), Which text function capitalizes the first letter in a string of text? Change all caps to lowercase except first letter of each word with formula. If you want to change all uppercase to lowercase but keep the first letter of each word uppercase in a range of cells, the function of Proper in Excel may help you, please do as follows:

function titleCase(str) {
  return str.split(' ').map(item => 
         item.charAt(0).toUpperCase() + item.slice(1).toLowerCase()).join(' ');
}

console.log(titleCase("HERE IS MY HANDLE HERE IS MY SPOUT"));

//prints "Here Is My Handle Here Is My Spout";

change the str parameter values and you are good to go.

How to lowercase a string except for first character with powershell , How do you make the first letter lowercase on iPhone? Output: "This is a test" Uppercase first letter in a string usinf RegEx. You can capitalize the first letter of a string by using RegEx also. The following program shows how to change the first letter of a string to upper case using RegEx.

Make first letter of a string upper case (with maximum performance , In the example below, the PROPER function is used to convert the uppercase names in column A to proper case, which capitalizes only the first letter in each  You will see updates in your activity feed. You may receive emails, depending on your notification preferences. Does anyone know how to create a function which accepts a string and capitalizes the first letter in each word of the string, but also forces the other letters to be lowercase? Any advice would be greatly appreciated!!

How to capitalize the first letter of a string in C#, First problem is that you are missing a dot between $_ and the property. Second problem is that the FullName property is the full path of the object including the  There are many ways to capitalize the first letter of a string in JavaScript. The easiest way to do is to use two JavaScript functions together: charAt() and slice(). The former isolates and uppercases the first character from the left of the string, and the later slices the string leaving the first character.

Capitalize the first letter in a word string in R, If you want to force all letters in the string except the first to be lower case, look for an answer containing ToLower , and not containing ToTitleCase. share. Something like capitalizing the first letter of a string is trivial thanks to ucfirst. But in JavaScript, assuming you’re not using php.js, the process is a bit more involved. To capitalize the first character of a string, you need to isolate the first character from the left of the string, and then concatenate it with the rest of the string.

Comments
  • Do you really want "whats up" or rather "Whats Up"?
  • Please read this stackoverflow.com/questions/1026069/…
  • input.charAt(0).toUpperCase() + input.toLowerCase().substring(1, txt.length);
  • @SMA that lowercases all letters except the first letter of the first word. I essentially do not want to not lowercase the first letter if it is uppercase already
  • I like what u did here but how about replacing the regex for function lowerCaseAllWordsExceptFirstLetters with this : /([^\s]+)/g so that it works for all words, I had issues with some words such as "İSTANBUL" , so I came up with this comment
  • Welcome to Stack Overflow. While your code may provide the answer to the question, please add context around it so others will have some idea what it does and why it is there.