How to implement click-to-delete pop-up window in php

As people's reliance on Web applications continues to deepen, the need to allow users to perform data operations on web pages is becoming more and more common. When performing a deletion operation on a web page, it is often necessary to prompt the user with a deletion confirmation pop-up window to avoid accidentally deleting important data. When using PHP language to implement this function, we can combine it with JavaScript. Let us take a look at how to use PHP and JavaScript to realize the pop-up deletion confirmation pop-up window.

First, in PHP, we need to write a code to handle the delete request. In this example, we will assume that we have obtained the entry to be deleted from the database, and then when we click delete, we are able to submit a delete request to the PHP backend program for processing. The PHP code is as follows:

<?php
// 获取待删除的数据
$id = $_GET[&#39;id&#39;];

// 处理删除请求
if (isset($id)) {
  // 在这里写下删除数据的代码
}
?>

Next, we need to add a "Delete" action button on the front-end page and link the button to our deletion processing script. Before that, we can add a class to this button to facilitate our operation in JavaScript code. The specific code is as follows:

<a href="delete.php?id=xxx" class="delete-button">删除</a>

Among them, xxx is the unique identifier of the data that needs to be deleted, which may be an ID number or other tag.

Next, we need to write JavaScript code to pop up the deletion confirmation pop-up window. When we click the "Delete" button, the following code will be executed:

// 获取所有class为“delete-button”的元素
const deleteButtons = document.querySelectorAll(".delete-button");

// 为每个按钮添加点击事件处理程序
deleteButtons.forEach(button => {
  button.addEventListener("click", event => {
    // 阻止默认的链接跳转行为
    event.preventDefault();

    // 弹出删除确认弹窗
    const result = confirm("确认要删除此项数据吗？");
    if (result) {
      // 如果用户确认删除，则跳转到删除处理脚本页面
      location.href = button.href;
    }
  });
});

Among them, we first use the querySelectorAll function to select all elements with class "delete-button" and store them in the deleteButtons variable. Next, we add a click event handler for each button, which will be executed when the user clicks the "Delete" button. In this event handler, we use the confirm function to pop up a delete confirmation pop-up window. If the user clicks the "Confirm" button, the function returns true, otherwise it returns false. If the return value is true, we jump to our deletion processing script page in the browser through the location.href attribute.

Finally, we added the above code to our front-end page and successfully realized the function of popping up the delete confirmation pop-up window by clicking the delete button.

To summarize, PHP and JavaScript can be used together to easily pop up a delete confirmation pop-up window. When implementing this operation, we need to first write PHP code to handle the deletion request, and then use JavaScript on the front end to pop up the deletion confirmation pop-up window.

The above is the detailed content of How to implement click-to-delete pop-up window in php. For more information, please follow other related articles on the PHP Chinese website!