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Rooted by: Capitalize every first letter of a word in a sentence
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  • Code 
    function capitalize(sentence) {
  return sentence.split(' ').map(w => w[0].toUpperCase() + w.slice(1)).join(' ');
}
     Preloaded Code 
    function capitalize(sentence) {
    return;
}
console.log(capitalize("i am a javascript programmer"));
     Test Cases 
    // Since Node 10, we're using Mocha.
// You can use `chai` for assertions.
const chai = require("chai");
const assert = chai.assert;
// Uncomment the following line to disable truncating failure messages for deep equals, do:
// chai.config.truncateThreshold = 0;
// Since Node 12, we no longer include assertions from our deprecated custom test framework by default.
// Uncomment the following to use the old assertions:
// const Test = require("@codewars/test-compat");

describe("Solution", function() {
  it("should test for something", function() {
    // Test.assertEquals(1 + 1, 2);
    // assert.strictEqual(1 + 1, 2);
  });
});
    View Run Output
  • Code
    • function capitalize(sentence) {
    • let words = sentence.split(' ');
    • const length = words.length;
    • for (let i = 0; i < length; ++i) {
    • words[i] = words[i][0].toUpperCase() + words[i].substr(1)
    • }
    • return words.join(' ');
    • }
    • console.log(capitalize("i am a javascript programmer"));
    • return sentence.split(' ').map(w => w[0].toUpperCase() + w.slice(1)).join(' ');
    • }