Template strings in JavaScript

There is a special type of quotes - backticks:

javascriptlet str = `abc`;
alert(str); // shows 'abc'

With backticks you can perform insertion of variables. To do this, you need to write the variable name in the construction ${}.

Let's look at an example. Let's say we want to add strings and a variable:

javascriptlet str = 'xxx';
let txt = 'aaa ' + str + ' bbb';

This code can be rewritten like this:

javascriptlet str = 'xxx';
let txt = `aaa ${str} bbb`;

javascriptlet str1 = 'xxx';
let str2 = 'yyy';
let txt  = 'aaa ' + str1 + ' bbb ' + str2 + ' ccc';