Window location search is a JavaScript method used to retrieve the query string parameters from the URL of a web page. The query string parameters are the additional data that are sent to the server along with the URL to accomplish some specific tasks on the server, such as database searching, filtering, sorting, and so on. In this article, we will discuss window location search with code examples.

Window Location Search
The window location search method is used to retrieve the query string parameters from the URL of a web page. The query string parameters are the part of the URL that comes after the question mark (?).

For example, consider the following URL:

https://www.example.com/search?keyword=javascript&category=tutorial

In this URL, the query string parameters are keyword, which has a value of javascript, and category, which has a value of tutorial.

The window location search method returns a string that contains the query string parameters. It is a read-only property, so we cannot modify the query string parameters using the window location search method.

Syntax:
window.location.search

Example:

Window Location Search Example

In this example, we have used the window location search method to retrieve the query parameters from the URL. We have then displayed the query parameters in the console using the console.log() method.

Output:
?keyword=javascript&category=tutorial

URLSearchParams
The URLSearchParams is a JavaScript method that is used to create and manipulate query string parameters. It provides methods to add, delete, and modify the query string parameters in the URL.

Syntax:
new URLSearchParams(queryString);

In this syntax, the queryString is a string that contains the query string parameters in the format of key=value&key=value&…

Example:

URLSearchParams Example

In this example, we have used the URLSearchParams method to create and manipulate the query string parameters. We have used the get() method to get the value of a specific query string parameter, the set() method to set the value of a specific query string parameter, the append() method to add a new query string parameter, and the delete() method to delete a specific query string parameter. Finally, we have used the toString() method to convert the modified query string parameters to string.

Output:
?keyword=javascript&sort=date

Conclusion
Window location search is a useful JavaScript method to retrieve the query string parameters from the URL of a web page. The URLSearchParams method provides methods to create and manipulate the query string parameters in the URL. By using these methods together, we can easily retrieve, modify, and manipulate the query string parameters in the URL. This can be useful in many scenarios, such as database searching, filtering, sorting, and so on.

Window Location Search:
In addition to the previous example, we can use the window location search method to retrieve individual query string parameters from the URL.

Syntax:
To get a specific parameter from the query string, we can use:
window.location.searchParams.get('parameterName');

For example, assuming a URL like https://www.example.com/search?keyword=javascript&category=web, we can retrieve the value of the keyword parameter like this:
window.location.searchParams.get('keyword'); // Output: "javascript"

URLSearchParams:
Apart from the methods illustrated in the previous example, we can use the URLSearchParams method to retrieve all the query string parameters as a map object with name/value pairs, where each parameter can have multiple values.

Syntax:
To retrieve the query string parameters map object, we can use:
window.location.searchParams;

For example, assuming a URL like https://www.example.com/search?keyword=javascript&category=web&category=programming, we can get the parameters map object like this:
window.location.searchParams; /* Output:
Map { "keyword" => "javascript", "category" => "web, programming" }
*/

Then we can get the values of the individual parameters as follows:

window.location.searchParams.get('keyword'); // Output: "javascript"
window.location.searchParams.getAll('category'); // Output: Array ["web", "programming"]

These methods can be useful when we need to manipulate the query parameters in more intricate ways.

Conclusion:
Window location search and URLSearchParams methods provide a straightforward way to access, manipulate, and add query parameters to our website's URLs. These techniques allow us to interact with the page's URL and create dynamic web pages that are reliable and more user-friendly.

In addition, since JavaScript is prevalent in modern web development, developers can use these methods to enhance the accessibility, usability, and general functionality of their web pages. So it is essential to have knowledge of these methods to take advantage of their features and improve web performance.

Popular questions

1. What does the window location search method return?
   Answer: The window location search method returns a string that contains the query string parameters of the URL of a web page.

2. Can we modify the query string parameters using the window location search method?
   Answer: No, we cannot modify the query string parameters using the window location search method. It is a read-only property.

3. What is the purpose of the URLSearchParams method in JavaScript?
   Answer: The URLSearchParams method is used to create and manipulate query string parameters in a URL. It provides methods to add, delete, and modify the query string parameters in the URL.

4. How can we retrieve a specific query string parameter using the window location search method?
   Answer: We can retrieve a specific query string parameter using the get() method of URLSearchParams. For example, window.location.searchParams.get('parameterName').

5. How can we get all the query string parameters as a map object using the URLSearchParams method?
   Answer: We can retrieve all the query string parameters as a map object using the URLSearchParams method by using the searchParams property of window.location. For example, window.location.searchParams.

Tag

"WinLocSearch"