js string to capital case code example

Example 1: javascript capitalize words

//capitalize only the first letter of the string. 
function capitalizeFirstLetter(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}
//capitalize all words of a string. 
function capitalizeWords(string) {
    return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};

Example 2: title case javascript

function titleCase(str) {
    return str
        .split(' ')
        .map((word) => word[0].toUpperCase() + word.slice(1).toLowerCase())
        .join(' ');
}
console.log(titleCase("I'm a little tea pot")); // I'm A Little tea Pot

Example 3: string to title case javascript

function titleCase(sentence) {
  let sentence = string.toLowerCase().split(" ");
  for (let i = 0; i < sentence.length; i++) {
    sentence[i] = sentence[i][0].toUpperCase() + sentence[i].slice(1);
  }
  
  return sentence.join(" ");
}

Example 4: javascript capitalize

myString = 'the quick green alligator...';
myString.replace(/^\w/, (c) => c.toUpperCase());

myString = '    the quick green alligator...';
myString.trim().replace(/^\w/, (c) => c.toUpperCase());