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Dev.to
5/10/2026
Arrow Functions in JavaScript: A Simpler Way to Write Functions

Arrow Functions in JavaScript: A Simpler Way to Write Functions

Short summary

Arrow functions (=>) introduced in ES6 are a cleaner, more concise syntax for writing JavaScript function expressions. Single-expression arrow functions implicitly return their result without explicit return keywords, while multi-line arrows require explicit returns. Parentheses around parameters are optional for single parameters but mandatory for zero or multiple parameters.

  • Arrow functions use => syntax instead of function keyword
  • Single-expression arrows have implicit returns; multi-line arrows need explicit return
  • Parentheses are optional for one parameter, required for zero or multiple

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