freecodecamp--freecodecamp/curriculum/challenges/english/blocks/basic-javascript/56533eb9ac21ba0edf2244b8.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
56533eb9ac21ba0edf2244b8	Concatenating Strings with the Plus Equals Operator	1	16803	concatenating-strings-with-the-plus-equals-operator

--description--

We can also use the += operator to concatenate a string onto the end of an existing string variable. This can be very helpful to break a long string over several lines.

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

Example:

let ourStr = "I come first. ";
ourStr += "I come second.";

ourStr now has a value of the string I come first. I come second..

--instructions--

Build myStr over several lines by concatenating these two strings: This is the first sentence. and This is the second sentence. using the += operator. Use the += operator similar to how it is shown in the example and be sure to include a space between the two strings. Start by assigning the first string to myStr, then add on the second string.

--hints--

myStr should have a single space character between the two strings.

assert(/sentence\. This/.test(myStr));

myStr should have a value of the string This is the first sentence. This is the second sentence.

assert(myStr === 'This is the first sentence. This is the second sentence.');

You should use the += operator to build myStr.

assert(__helpers.removeJSComments(code).match(/myStr\s*\+=\s*(["']).*\1/g));

--seed--

--seed-contents--

let myStr;

--solutions--

let myStr = "This is the first sentence. ";
myStr += "This is the second sentence.";