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What are template literals?

Template literals are a feature in JavaScript, introduced with ES6, that allow you to create strings that are more flexible and powerful than traditional string concatenation. They are enclosed by backticks (`) instead of single (') or double (") quotes.


Key Features of Template Literals:


1. String Interpolation:
○ Allows embedding expressions directly within the string using the ${expression} syntax.

○ Example:


const name = 'John';
const age = 30;
const greeting = Hello, my name is ${name} and I am ${age} years old.;
console.log(greeting);

// Output: Hello, my name is John and I am 30 years old.




1. Multiline Strings:
○ Template literals can span multiple lines without needing escape characters (\n).
○ Example:


const multiline = `This is a string
that spans across
multiple lines.`;
console.log(multiline);


Output--





1. Expression Evaluation:
○ Any valid JavaScript expression can be included inside the ${} placeholder.
○ Example:


const a = 5;
const b = 10;
console.log(`The sum of ${a} and ${b} is ${a + b}.`);
// Output: The sum of 5 and 10 is 15.



2. Tagged Templates:
○ A way to process template literals with a function.
○ Example:


function tag(strings, ...values) {
return strings[0] + values.map((val) => val.toUpperCase()).join("");
}
const result = tag`Hello ${"world"}!`;
console.log(result);
// Output: Hello WORLD!



3. Dynamic HTML or Other Markup:
○ Useful for dynamically constructing HTML or other content.
○ Example:
const title = 'Welcome';
const content = <h1>${title}</h1>;
console.log(content);
Syntax:

string text
string text ${expression} string text


Template literals are especially useful for creating complex strings and enhancing code readability.