freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md

id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
56533eb9ac21ba0edf2244b7	Concatenating Strings with Plus Operator	1	https://scrimba.com/c/cNpM8AN	16802

--description--

In JavaScript, when the + operator is used with a String value, it is called the concatenation operator. You can build a new string out of other strings by concatenating them together.

Example

'My name is Alan,' + ' I concatenate.'

Note
Watch out for spaces. Concatenation does not add spaces between concatenated strings, so you'll need to add them yourself.

Example:

var ourStr = "I come first. " + "I come second.";
// ourStr is "I come first. I come second."

--instructions--

Build myStr from the strings "This is the start. " and "This is the end." using the + operator.

--hints--

myStr should have a value of This is the start. This is the end.

assert(myStr === 'This is the start. This is the end.');

You should use the + operator to build myStr.

assert(code.match(/(["']).*\1\s*\+\s*(["']).*\2/g));

myStr should be created using the var keyword.

assert(/var\s+myStr/.test(code));

You should assign the result to the myStr variable.

assert(/myStr\s*=/.test(code));

--seed--

--after-user-code--

(function(){
  if(typeof myStr === 'string') {
    return 'myStr = "' + myStr + '"';
  } else {
    return 'myStr is not a string';
  }
})();

--seed-contents--

var myStr; // Change this line

--solutions--

var myStr = "This is the start. " + "This is the end.";