4.1.3 JS String Templates

Quotes Inside Strings

With template literals, you can use both single and double quotes inside a string:

Example

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

Try it yourself

Multiline Strings

Template literals allows multiline strings:

Example

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

Try it yourself

Interpolation

• Template literals provide an easy way to interpolate variables and expressions into strings.
• The method is called string interpolation.
• The syntax is:

${...}

Variable Substitutions

Template literals allow variables in strings:

Example

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

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

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Automatic replacing of variables with real values is called string interpolation.

Expression Substitution

Template literals allow expressions in strings:

Example

let price = 10;
let VAT = 0.25;

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

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Automatic replacing of variables with real values is called string interpolation.

HTML Templates

Example

let header = "Templates Literals";
let tags = ["template literals", "javascript", "es6"];

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

html += `</ul>`;

Try it yourself

Browser Support

• Template Literals is an ES6 feature (JavaScript 2015).
• It is supported in all modern browsers:

Chrome	Edge	Firefox	Safari	Opera
Yes	Yes	Yes	Yes	Yes

Template Literals is not supported in Internet Explorer.