Working with strings: [11 of 51]

Strings

• The data type that represents textual elements on the web
• Could be anything from the output of console.log to text on a web page

Concatenation

• Used to format text before it reaches its final destination

What is String Concatenation?

Combining two or more strings

• Feature that makes it easier to format text
• Can join a combination of variables and/or actual strings (also known as string literals)
• Concatenating strings will make a new string

Done with a + operator

• The addition operator is not just for numbers…

Using the + operator

let str1 = "Hello";
let str2 = "World!";

console.log(str1 + str2);
console.log(str1 + "Big" + str2)

Output:

HelloWorld!
HelloBigWorld

Adding spaces:

let str1 = "Hello ";
let str2 = "World!";

console.log(str1 + str2);
console.log(str1 + "Big " + str2)

Output:

Hello World!
Hello Big World!

Be careful with numbers!

• Numbers and strings both use the + operator
• Always keep everything the same data type

let num1 = 1;
let num2 = "1";

console.log(num1 + num2);
console.log (num1 + 1)

Output:

11
2

from: Working with strings [11 of 51] | Beginner’s Series to JavaScript