touppercase first letter in word in aarrayjavascript code example

Example 1: javascript uppercase first letter of each word

const str = 'captain picard';

function capitalize(str) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}

const caps = str.split(' ').map(capitalize).join(' ');
caps; // 'Captain Picard'

Example 2: how to convert array to uppercase in javascript

var a = ['this','is','test'];

a.map(f=>{ return f.toUpperCase(); });