freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/assigning-the-value-of-one-variable-to-another.english.md

id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
5ee127a03c3b35dd45426493	Assigning the Value of One Variable to Another	1		418265

Description

After a value is assigned to a variable using the assignment operator, you can assign the value of that variable to another variable using the assignment operator.

var myVar;
myVar = 5;
var myNum;
myNum = myVar;

The above declares a myVar variable with no value, then assigns it the value 5. Next, a variable named myNum is declared with no value. Then, the contents of myVar (which is 5) is assigned to the variable myNum. Now, myNum also has the value of 5.

Instructions

Assign the contents of a to variable b.

Tests

tests:
  - text: You should not change code above the specified comment.
    testString: assert(/var a;/.test(code) && /a = 7;/.test(code) &&  /var b;/.test(code));
  - text: <code>b</code> should have a value of 7.
    testString: assert(typeof b === 'number' && b === 7);
  - text: <code>a</code> should be assigned to <code>b</code> with <code>=</code>.
    testString: assert(/b\s*=\s*a\s*/g.test(code));

Challenge Seed

// Setup
var a;
a = 7;
var b;

// Only change code below this line

Before Test

if (typeof a != 'undefined') {
  a = undefined;
}
if (typeof b != 'undefined') {
  b = undefined;
}

After Test

(function(a, b) {
  return 'a = ' + a + ', b = ' + b;
})(a, b);

Solution

var a;
a = 7;
var b;
b = a;