


Ajax & PHP Learning and Practicing Part 2 Example_PHP Tutorial
This article introduces the use of Ajax and PHP through an example. You can download the source program of this example for better understanding. The functions.js in the compressed package is the Ajax core code, and all operating effects are achieved through it. The code explanations below are all extracted from functions.js.
Effect 1. When the mouse is placed on a certain day, if there are memos on that day, it will be displayed, as shown below:

//Find the taskbox corresponding to the
theObject = document.getElementById("taskbox");
theObject.style.visibility = "visible ";
//Initialize the taskbox position
var posx = 0;
var posy = 0;
//Position the taskbox position to the mouse position
posx = e.clientX + document.body. scrollLeft;
posy = e.clientY + document.body.scrollTop;
theObject.style.left = posx + "px";
theObject.style.top = posy + "px";
//Set the PHP request page
serverPage = "Ajax & PHP Learning and Practicing Part 2 Example_PHP Tutorialer.php?thedate=" + thedate;
//Set the PHP return data replacement location
objID = "taskbox";
var obj = document. getElementById(objID);
//Send a request and load the return data
xmlhttp.open("GET", serverPage);
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState = = 4 && xmlhttp.status == 200){
obj.innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null);
}
Effect 2. When the mouse clicks to enter a name on a certain day, the system will automatically search whether the name exists, and can be filled in the name box by selection, as shown in the figure:

//Locate the
theObject = document.getElementById("autocompletediv");
//Set To be visible
theObject.style.visibility = "visible";
theObject.style.width = "152px";
//Set the retrieval tag position
var posx = 0;
var posy = 0;
posx = (findPosX (document.getElementById("yourname")) + 1);
posy = (findPosY (document.getElementById("yourname")) + 23);
theObject.style.left = posx + "px";
theObject.style.top = posy + "px";
//Set the event to keyboard input
var theextrachar = e. which;
if (theextrachar == undefined){
theextrachar = e.keyCode;
}
//Set the location to load the search list
var objID = "autocompletediv";
//Set the PHP request page and pass the name entered by the user (taking into account the Backspace function)
if (theextrachar == 8){
if (thevalue.length = = 1){
var serverPage = "autocomp.php";
}
else{
var serverPage = "autocomp.php" + "?sstring=" + thevalue.substr(0, ( thevalue.length -1));
}
}
else{
var serverPage = "autocomp.php" + "?sstring=" + thevalue + String.fromCharCode(theextrachar);
}
//Send the request and load the returned data
var obj = document.getElementById(objID);
xmlhttp.open("GET", serverPage);
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
obj.innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null);
}
Source code download: Sample3.rar

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
