Benchmark: condition check - MeasureThat.net

Script Preparation code:

var normalPrice = 30;
var salePrice = 20;
var amount = {
  orderItemTotalAmount: 0,
  discountAmount: {
    basicDiscount: 0,
  },
};

Tests:

condition 1
if (normalPrice) { // 총 상품 금액 amount.orderItemTotalAmount += normalPrice * 10; if (salePrice) { // 할인 금액 계산 amount.discountAmount.basicDiscount += (normalPrice - salePrice) * 10; } }
condition 2
if (normalPrice !== undefined) { // 총 상품 금액 amount.orderItemTotalAmount += normalPrice * 10; if (salePrice !== undefined) { // 할인 금액 계산 amount.discountAmount.basicDiscount += (normalPrice - salePrice) * 10; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
condition 1
condition 2

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model gemma2:9b, generated one year ago):

LLMs can make mistakes. Check important info.

This benchmark tests different ways of checking for truthy values in JavaScript using `if` statements within the context of calculating order amounts and discounts.

Let's break down the code:

**Test Cases:**

* **"condition 1":**
   ```javascript
   if (normalPrice) { 
       // Calculate total order amount
       amount.orderItemTotalAmount += normalPrice * 10;

if (salePrice) {
           // Calculate discount amount
           amount.discountAmount.basicDiscount += (normalPrice - salePrice) * 10;
       }
   }
   ```

* **"condition 2":**
   ```javascript
   if (normalPrice !== undefined) { 
       // Calculate total order amount
       amount.orderItemTotalAmount += normalPrice * 10;

if (salePrice !== undefined) {
           // Calculate discount amount
           amount.discountAmount.basicDiscount += (normalPrice - salePrice) * 10;
       }
   }
   ```

**Comparison:**

The benchmark compares:

1. **`if (normalPrice)`:**  This checks if `normalPrice` is truthy. In JavaScript, most values are considered truthy except for `false`, `0`, `null`, `undefined`, `NaN`, and an empty string (`""`).
2. **`if (normalPrice !== undefined)`:** This explicitly checks if `normalPrice` is not equal to `undefined`.

**Pros/Cons:**

* **`if (normalPrice)`:** 
    * **Pro:** More concise and generally preferred as it follows JavaScript's standard truthy/falsy evaluation. 
    * **Con:** Might lead to unexpected behavior if `normalPrice` is set to a value that evaluates to falsy (e.g., `0`).

* **`if (normalPrice !== undefined)`:**
    * **Pro:** More explicit about handling the case where a variable might be undefined. This can be helpful for ensuring robustness in code that relies on variable initialization. 
    * **Con:** More verbose and potentially less readable than using the shorter `if (normalPrice)` form when the context implies that the variable should not be `undefined`.

**Alternatives:**

* **Using a conditional operator (`?:`)**: This can sometimes make the code more concise, especially for simple checks:
   ```javascript
   amount.orderItemTotalAmount += normalPrice ? normalPrice * 10 : 0; // Calculate only if normalPrice is truthy
   ```

Let me know if you have any other questions or would like to explore specific aspects of the benchmark in more detail!

Related benchmarks:

condition check (version: 0)

Comparing performance of: condition 1 vs condition 2

Created: 3 years ago by: Registered User

Jump to the latest result

condition 1

condition 2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model gemma2:9b, generated one year ago):