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JavaScript: Capitalize the first letter of every word in a string

JavaScript fundamental (ES6 Syntax): Exercise-264 with Solution

Write a JavaScript program to capitalize the first letter of every word in a string.

  • Use String.prototype.replace() to match the first character of each word and String.prototype.toUpperCase() to capitalize it.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperCase());
console.log(capitalizeEveryWord('hello world!'));

Sample Output:

Hello World!

Pictorial Presentation:

JavaScript Fundamental: Capitalize the first letter of every word in a string.

Flowchart:

flowchart: Capitalize the first letter of every word in a string.

Live Demo:

See the Pen javascript-basic-exercise-264-1 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Errors

const name = 'Owen';

console.log(name());

The variable name holds the value of a string, which is not a function, thus cannot invoke.
TypeErrors get thrown when a value is not of the expected type. JavaScript expected name to be a function since we're trying to invoke it. It was a string however, so a TypeError gets thrown: name is not a function!
SyntaxErrors get thrown when you've written something that isn't valid JavaScript, for example when you've written the word return as retrun. ReferenceErrors get thrown when JavaScript isn't able to find a reference to a value that you're trying to access.

Ref: https://bit.ly/3jFRBje