Explain in detail how to pass parameters in thinkphp's AJAX request

With the rapid development of Web technology, AJAX technology has become an indispensable part of Web development. In the case of front-end and back-end separation, if the front-end needs to interact with the back-end, AJAX technology needs to be used.

While using AJAX technology for data interaction, parameter passing is particularly important. When using thinkphp, how to pass parameters in the AJAX request? This article will explain in detail how to pass parameters in thinkphp's AJAX request.

First, we need to understand what an AJAX request is. AJAX (Asynchronous JavaScript and XML) is a technology for creating fast and dynamic web pages. It is a technology that can update parts of web pages without reloading the entire web page. AJAX allows web pages to be updated asynchronously by exchanging a small amount of data with the server in the background. This means that parts of the page can be updated without affecting the user experience.

In thinkphp, we usually use jQuery to make AJAX requests. Regarding the use of jQuery, I won’t go into details here. Let’s look directly at how to pass parameters in thinkphp’s AJAX request.

In thinkphp, we can use $_POST or $_GET to get the parameter values ​​passed in the AJAX request. The specific method is as follows:

1. Use the $_POST method to obtain the parameter value

$.ajax({
    url: '/index/index/testpost',
    data: {'name': 'Tom', 'age': 18},
    method: 'POST',
    success: function(result) {
        console.log(result);
    }
});

In the above code, we used the POST method to send an AJAX request to the server. In the request Two parameters are passed: name and age. The back-end code can use the $_POST array to obtain these parameter values:

public function testpost()
{
    $name = $_POST['name'];
    $age = $_POST['age'];
    echo $name . ' ' . $age;
}

2. Use the $_GET method to obtain the parameter values ​​

$.ajax({
    url: '/index/index/testget?name=Tom&age=18',
    method: 'GET',
    success: function(result) {
        console.log(result);
    }
});

In the above code, we use the GET method to request the server An AJAX request is sent, and the parameters name and age are directly concatenated and passed in the URL in the request. The back-end code can use the $_GET array to obtain these parameter values:

public function testget()
{
    $name = $_GET['name'];
    $age = $_GET['age'];
    echo $name . ' ' . $age;
}

3. Use thinkphp’s input() method to obtain parameter values ​​

The thinkphp framework provides a convenient method - input () can be used to obtain all parameter values, whether it is a POST or GET request. The usage is as follows:

$.ajax({
    url: '/index/index/testinput',
    data: {'name': 'Tom', 'age': 18},
    method: 'POST',
    success: function(result) {
        console.log(result);
    }
});

The back-end code uses input() to obtain these parameter values:

public function testinput()
{
    $name = input('post.name');
    $age = input('post.age');
    echo $name . ' ' . $age;
}

Summary

In this article, we explain thinkphp in detail Methods for passing parameters in AJAX requests, including using $_POST, $_GET and input() methods to obtain parameter values. At the same time, we also demonstrated through example code how to pass parameters in AJAX requests and how to obtain the values ​​of these parameters. I believe that everyone already has a certain understanding of these contents, which has certain reference value for developing Web applications.

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