Let’s talk about jQuery’s non-Ajax POST request method

jQuery is a very commonly used JavaScript library because it makes using JavaScript in web pages very simple. In web pages, Ajax requests are often used to interact with the back-end data, and jQuery's Ajax method is very easy to use and convenient. jQuery's Ajax method can handle both GET and POST requests, but it uses Ajax's POST request by default. But sometimes we also need to use POST requests to send data to the backend without using Ajax. Let me introduce to you the jQuery non-Ajax POST request method.

1. The difference between AJAX and non-AJAX requests

Before introducing jQuery’s non-Ajax POST request method, we first need to understand the difference between Ajax and non-Ajax requests. Ajax requests are an asynchronous web development technique that can send data to the server without reloading the entire page. A non-Ajax request means that the entire page will be reloaded and a new request will be sent to the server to obtain the data.

2. Use jQuery’s non-Ajax POST request method

In jQuery, you can use the $.post() method to initiate a POST request. This method can actually use Ajax requests, but we can make it a non-Ajax POST request by specifying the "dataType" parameter as "html".

Sample code:

$.post(url, data, function(response) {
    // 回调函数
}, "html");

Among them, the url parameter points to the address to send the POST request, and the data parameter is the data to be sent to the server. Traditionally, forms are used to pass data, but jQuery is used The non-Ajax POST method needs to encapsulate the data into a JavaScript object, for example:

var data = {
    name: "张三",
    age: 18,
    gender: "男"
};

The third parameter is the callback function, which is used to process the response returned by the server. In this callback function, the data returned by the server can be accessed through the response parameter. The last parameter specifies the data type returned by the server. Setting it to "html" here means that an HTML page is returned.

After using the $.post() method, if you need to cancel the request, you can use the abort() method in the $.ajax() method to cancel the request. An example is as follows:

var xhr = $.post("/example.php", function(response) {
    // 回调函数
});

// 取消请求
xhr.abort();

3. Summary

The above is the detailed content of jQuery’s non-Ajax POST request method. In actual development, non-Ajax POST requests may be used more frequently than Ajax, because if you only need to simply send data to the server, there is no need to use Ajax to implement it. This function can be easily achieved using jQuery's non-Ajax POST method.

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