I am trying to test the string, either it contains the first letter of word are capital letter. but not getting result.

please correct me.

here is my code:

const str = "This Is How it";
const patten = /\b(^[A-Z])\w \b/g;

console.log(patten.test(str));

Actually it should give false but getting true. because last word it not start with capital.

CodePudding user response：

If you need to check a line if all the words inside it begin with a capital letter, here is one way to do it:

CodePudding user response：

• .split(' ') the string at each space.
• Run the array through .every()
• In each iteration of .every(), .test() each word vs. /\b[A-Z][a-z]*\b/
• If all words pass then true is returned else false is.

const title1 = "The Empire Strikes Back";
const title2 = "The Return of the Jedi";

function firstLetterCap(string) {
  const rgx = /\b[A-Z][a-z]*\b/;
  return string.split(' ').every(word => rgx.test(word));
}

console.log(firstLetterCap(title1));
console.log(firstLetterCap(title2));