Regex Path Matcher

Illustrate how to define a custom route matcher using regular expressions for complex URL patterns.

// Function to test if a given path matches a given regular expression pattern
function regexPathMatcher(pattern, path) {
    const regex = new RegExp(pattern);
    return regex.test(path);
}

Defines a function regexPathMatcher which takes a regex pattern and a path string as input and returns true if path matches the pattern, false otherwise.

// Example usage
const routePattern = '^\/users\/(\d+)$';
const pathToTest = '/users/123';
const isMatch = regexPathMatcher(routePattern, pathToTest);
console.log(isMatch); // Outputs: true

Demonstrates how to use the regexPathMatcher function by testing if the '/users/123' path matches the provided pattern that represents a route for user profiles with numeric ids.

const patterns = [
    '^\/products\/(\d+)$',
    '^\/orders\/(\d+)$',
    '^\/search\/([^\/]+)$'
];

// Function that tests a path against multiple patterns
function matchMultiplePatterns(patterns, path) {
    for (const pattern of patterns) {
        if (regexPathMatcher(pattern, path)) {
            return true;
        }
    }
    return false;
}

Defines a function matchMultiplePatterns that tests a path against an array of regex patterns. It returns true if the path matches any of the patterns, false if it doesn't match any.

// Using the matchMultiplePatterns
const pathToTestMultiple = '/orders/456';
const multipleMatchResult = matchMultiplePatterns(patterns, pathToTestMultiple);
console.log(multipleMatchResult); // Outputs: true

Shows how to use the matchMultiplePatterns function to check if the path '/orders/456' matches any pattern in a list of multiple patterns.