this.number = Math.random() * 1000;
return Math.max(250, Math.min(750, this.number));
var number = this.number;
if(number < 250) number = 250;
if(number > 750) number = 750;
return number;
var number = this.number;
const max = (number > 750 ? 750 : number);
return number < 250 ? 250 : max;
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Math.max/min | |
if | |
ternary |
Test name | Executions per second |
---|---|
Math.max/min | 4051622.5 Ops/sec |
if | 925426112.0 Ops/sec |
ternary | 926729408.0 Ops/sec |
Let's break down the provided benchmark and explain what is tested, options compared, pros/cons of each approach, and other considerations.
Benchmark Overview
The test case, as shown in the JSON definition, compares three ways to achieve the same result: using Math.max
and Math.min
, an if-const
approach with variable assignment, and a ternary operator with constant comparison. The benchmark is designed to measure which method is faster on a typical web page.
Options Compared
if
statement to assign a new value to a variable if a condition is met, and then returns that variable.Pros/Cons of Each Approach
return
statement.Other Considerations
const
in the ternary operator approach ensures that a new value is assigned only if necessary, which can improve performance by avoiding unnecessary reassignments.if-const
approach, variable assignment might lead to side effects (e.g., modifying external state), making it less predictable and potentially slower.Library Usage
The provided benchmark does not explicitly use any libraries. However, note that some browsers may have additional libraries or modules enabled when running JavaScript benchmarks.
Special JS Features or Syntax
There are no special features or syntax mentioned in the benchmark, as all three approaches rely on standard JavaScript constructs.
Alternative Approaches
To improve performance, developers might consider using more efficient mathematical operations, such as:
Math.abs
instead of Math.max
and Math.min
&
, |
) to implement conditional logicKeep in mind that the optimal approach will depend on specific use cases, browser versions, and performance requirements.
In summary, the benchmark provides a concise comparison between three common approaches for finding minimum or maximum values: using built-in functions (Math.max/min
), an if-const
approach with variable assignment, and a ternary operator with constant comparison. Understanding the pros/cons of each approach can help developers make informed decisions about which method to use in their own projects.