JavaScript Template Strings

Back-Tics Syntax

Template Strings use back-ticks (“) rather than the quotes (“”) to define a string:

let text = `Hello World!`;

Quotes Inside Strings

Template Strings allow both single and double quotes inside a stringn :

let text = `He's often called "Johnny"`;Opera

Multiline Strings

Template Strings allow multiline strings:

let text =
`The quick
brown fox
jumps over
the lazy dog`;

Interpolation

Template String provide an easy way to interpolate variables and expressions into strings.

The method is called string interpolation.

The syntax is:

${...}

Variable Substitutions

Template Strings allow variables in strings:

let firstName = "John";
let lastName = "Doe";

let text = `Welcome ${firstName}, ${lastName}!`;

Expression Substitution

Template Strings allow expressions in strings:

let price = 10;
let VAT = 0.25;

let total = `Total: ${(price * (1 + VAT)).toFixed(2)}`;

HTML Templates

let header = "Template Strings";
let tags = ["template strings", "javascript", "es6"];

let html = `<h2>${header}</h2><ul>`;
for (const x of tags) {
  html += `<li>${x}</li>`;
}

html += `</ul>`;

Browser Support

Template Strings is an ES6 feature (JavaScript 2015).

ES6 is fully supported in all modern browsers since June 2017:

Template Strings is not supported in Internet Explorer.