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7. Strings & Template Literals

String immutability and interpolation.

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Strings in JavaScript are immutable. Template literals use backticks to interpolate expressions (`${val}`) and span multiple lines.

js
const addr = "0xAbC123";
const formatted = `Address: ${addr.toLowerCase()}`;

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Check your understanding

  1. 1. Can strings be mutated in place?

  2. 2. Which syntax enables template interpolation?

  3. 3. What does startsWith('0x') return?

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