Javascript Programming Tutorials, Guides & Best Practices

Deeply nested code can be difficult to follow and debug. Break down complex logic into smaller, modular functions.

  // Deeply nested code
  function processOrder(order) {
      if (order.isValid) {
          if (order.paymentProcessed) {
              if (order.itemsInStock) {
                  shipOrder(order);
              }
          }
      }
  }

  // Refactored code
  function processOrder(order) {
      if (!order.isValid) return;
      if (!order.paymentProcessed) return;
      if (!order.itemsInStock) return;
      shipOrder(order);
  }