Can you explain the key distinction between the backtick (`) and the ampersand-hash-39

I am completely new to TypeScript, JavaScript, and Angular. As I follow some tutorials, I often encounter code snippets like the one below:

class Point {
  constructor(x, y) {
    this.x = x;
    this.y = y;
  }
  toString() {
    return `(${this.x}, ${this.y})`;
  }
}

My question is about these back-ticks used in the code snippet above. Normally, I see single (' ') or double (" ") quotes being used for strings. Are these three versions functionally equivalent?

  1. ` == ' ?

  2. ` === '?

Or is this specific to Angular/TypeScript syntax only?

Answer №1

When using template literals, the back-tick character (`) is used instead of double " or single ' quotes. These template literals can include placeholders, indicated by the dollar sign and curly braces (${expression}). The expressions within the placeholders and the text surrounding them are passed to a function. By default, this function simply concatenates everything into one string.

- Reference: MDN web docs

You can utilize back ticks ` to incorporate JavaScript notations within your strings. For example:

const name = 'world'

// using ''
let myString1 = 'Hello' + name;

// using ``
let myString2 = `Hello ${name}`

myString1 and myString2 both contain the same string value.

This feature offers a more efficient way to format content in JavaScript compared to conventional string concatenation methods. Variables can be easily inserted into strings without extra manipulation.

Additionally, note that ` is equivalent to '. Test it out by typing the following code snippet in the console:

`\`` === '`'

The result will be true

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