How Can JavaScript Efficiently Add Parameters to URLs?

Adding Parameters to URLs with JavaScript

Enhancing URLs to include additional parameters is a common task in AJAX-based web applications. To address this need, JavaScript offers several options to seamlessly append or modify parameters in URLs.

Using the URL Interface

The URL interface provides comprehensive control over the manipulation of URLs. An instance of URL can be created from an existing URL string and accessed using methods like searchParams and toString(). For instance:

var url = new URL("http://server/myapp.php?id=10");
url.searchParams.append('enabled', true);
var updatedUrl = url.toString(); // "http://server/myapp.php?id=10&enabled=true"

Utilizing URLSearchParams

URLSearchParams focuses specifically on the query string parameters of a URL. It offers methods like append() and set() to add or modify parameters:

var url = new URL("http://server/myapp.php?id=10");
var params = new URLSearchParams(url.searchParams);
params.append('enabled', true);
url.search = params.toString(); // "id=10&enabled=true"

By utilizing these JavaScript interfaces, developers can effortlessly enhance URLs with custom parameters, supporting dynamic interactions and seamless data manipulation in AJAX requests.

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