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Strings
Template literals use backticks (`) instead of quotes, supporting string interpolation with ${expression}, multi-line strings, and embedded expressions. Tagged templates allow you to parse template literals with a custom function for advanced string processing.
Template Literals (ES6) provide a cleaner way to create strings:
${}\n${}Tagged Templates are an advanced feature where a function processes the template literal:
Common use cases:
const name = 'Alice';
const age = 25;
// String interpolation
const bio = `${name} is ${age} years old`;
// Multi-line strings
const html = `
<div class="card">
<h2>${name}</h2>
<p>Age: ${age}</p>
</div>
`;
// Expressions
const msg = `Total: $${(9.99 * 3).toFixed(2)}`; // 'Total: $29.97'
const status = `User is ${age >= 18 ? 'adult' : 'minor'}`;
// Nested template literals
const items = ['a', 'b', 'c'];
const list = `<ul>${items.map(i => `<li>${i}</li>`).join('')}</ul>`;Building dynamic email content with embedded variables and conditional sections using template literals
Using tagged templates to build parameterized queries that prevent SQL injection attacks
Creating structured, readable log messages with interpolated context values and timestamps
Build a tagged template function that replaces placeholders with HTML-escaped values for safe rendering
Build a template system for generating styled HTML emails from structured data objects
Uses tagged template literals to define component styles with dynamic CSS and prop interpolation
The gql tagged template parses GraphQL query strings into AST objects for use with Apollo Client