freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/appending-variables-to-strings.english.md

id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
56533eb9ac21ba0edf2244ed	Appending Variables to Strings	1	https://scrimba.com/c/cbQmZfa	16656

Description

Just as we can build a string over multiple lines out of string literals, we can also append variables to a string using the plus equals (+=) operator.

Example:

var anAdjective = "awesome!";
var ourStr = "freeCodeCamp is ";
ourStr += anAdjective;
// ourStr is now "freeCodeCamp is awesome!"

Instructions

Set someAdjective and append it to myStr using the += operator.

Tests

tests:
  - text: <code>someAdjective</code> should be set to a string at least 3 characters long.
    testString: assert(typeof someAdjective !== 'undefined' && someAdjective.length > 2);
  - text: You should append <code>someAdjective</code> to <code>myStr</code> using the <code>+=</code> operator.
    testString: assert(code.match(/myStr\s*\+=\s*someAdjective\s*/).length > 0);

Challenge Seed

// Change code below this line

var someAdjective;
var myStr = "Learning to code is ";

After Test

(function(){
  var output = [];
  if(typeof someAdjective === 'string') {
    output.push('someAdjective = "' + someAdjective + '"');
  } else {
    output.push('someAdjective is not a string');
  }
  if(typeof myStr === 'string') {
    output.push('myStr = "' + myStr + '"');
  } else {
    output.push('myStr is not a string');
  }
  return output.join('\n');
})();

Solution

var someAdjective = "neat";
var myStr = "Learning to code is ";
myStr += someAdjective;