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JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Combining Strings

Ronald Greer
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Ronald Greer
Front End Web Development Techdegree Graduate 56,430 Points
Posted by Ronald Greer
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Ronald Greer
Front End Web Development Techdegree Graduate 56,430 Points

I am in big pickle

i really do not understand whats going on here. can someone please send an example?

script.js 
var firstName;
firstName = "Kylo";
var lastName;
lastName = "Ren";
var fullName = "message";
message += "Kylo Ren";
index.html 
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>
Manuel Bichler
Manuel Bichler
Courses Plus Student 876 Points
Manuel Bichler
Manuel Bichler
Courses Plus Student 876 Points

When the browser starts it will go threw the index.html file. It sees that you have linked to a <script src="script.js"></script>file and he will check that too.

In the script.js file you have defined 3 variables which the browser keeps in mind. He kind of stores them. If you open your developer console in the browser (right click and inspect) you can check the variables. But first you need to tell the browser that you also want to see it in the console. You do that with console.log(variable);

So if you add at the bottom of your script.js the line

console.log(firstName);
console.log(secondName);
console.log(fullName);

you will actually see what the browser has stored in the variables.... hope it helps.

2 Answers

victor cooper
victor cooper
6,436 Points
victor cooper
victor cooper
6,436 Points

first line you declare a variable, second line you assign a value to it. third and fourth line do the same. fifth line you declare a variable and assign a value to it. last line will give you an error because you are trying to concatenate an undefined variable with a string.