freeCodeCamp/use-the-javascript-console-to-check-the-value-of-a-variable.english.md at 5bf8527523797f13f92b5e5889ac3a53e5540d60

Randell Dawson 5bf8527523 fix(curriculum): Remove unnecessary assert message argument from English challenges JavaScript Algorithms and Data Structures - 02 (#36402 )

* fix: rm assert msg basic-algorithm-scripting

* fix: rm assert msg debugging

* fix: rm assert msg es6

* fix: rm assert msg functional-programming

2019-07-24 10:47:32 +02:00

1.7 KiB

Raw Blame History

id, title, challengeType

id	title	challengeType
587d7b83367417b2b2512b33	Use the JavaScript Console to Check the Value of a Variable	1

Description

Both Chrome and Firefox have excellent JavaScript consoles, also known as DevTools, for debugging your JavaScript. You can find Developer tools in your Chrome's menu or Web Console in Firefox's menu. If you're using a different browser, or a mobile phone, we strongly recommend switching to desktop Firefox or Chrome. The console.log() method, which "prints" the output of what's within its parentheses to the console, will likely be the most helpful debugging tool. Placing it at strategic points in your code can show you the intermediate values of variables. It's good practice to have an idea of what the output should be before looking at what it is. Having check points to see the status of your calculations throughout your code will help narrow down where the problem is. Here's an example to print 'Hello world!' to the console: console.log('Hello world!');

Instructions

Use the console.log() method to print the value of the variable a where noted in the code.

Tests

tests:
  - text: Your code should use <code>console.log()</code> to check the value of the variable <code>a</code>.
    testString: assert(code.match(/console\.log\(a\)/g));

Challenge Seed

let a = 5;
let b = 1;
a++;
// Add your code below this line


let sumAB = a + b;
console.log(sumAB);

Solution

var a = 5; console.log(a);

1.7 KiB Raw Blame History