About the use of js mouse button events and keyboard button events
This article mainly introduces the usage of js mouse button events and keyboard button events. It summarizes and analyzes the common operation techniques of JavaScript for mouse and keyboard events in the form of examples. Friends in need can refer to the examples of this article.
Describes the usage of js mouse button events and keyboard button events. Share it with everyone for your reference, the details are as follows:
keydown, keyup, keypress: keyboard keys that belong to you
mousedown,mouseup: mouse keys that belong to you
When buttons When pressed, a keydown event occurs.
Keyup is triggered when the user lifts the key.
The complete key press process is divided into two parts: 1. Key press is pressed; 2. the button is released.
When the user presses the mouse button on this element, mousedown occurs
When the user releases the mouse button on this element, mouseup occurs
Example
1. Which mouse button was clicked
<html>
<head>
<script type="text/javascript">
function whichButton(event)
{
if (event.button==2)
{
alert("你点击了鼠标右键!")
}
else
{
alert("你点击了鼠标左键!")
}
}
</script>
</head>
<body onmousedown="whichButton(event)">
<p>请单击你鼠标的左键或右键试试</p>
</body>
</html>2. What are the current mouse cursor coordinates
<html>
<head>
<script type="text/javascript">
function show_coords(event)
{
x=event.clientX
y=event.clientY
alert("X 坐标： " + x + ", Y 坐标： " + y)
}
</script>
</head>
<body onmousedown="show_coords(event)">
<p>在此文档中按下你鼠标的左键看看！</p>
</body>
</html>3. What is the unicode code of the pressed key
<html>
<head>
<script type="text/javascript">
function whichButton(event)
{
alert(event.keyCode)
}
</script>
</head>
<body onkeyup="whichButton(event)">
<p>在此文档中按下你键盘上的某个键看看</p>
</body>
</html>4. What is the coordinate of the current mouse cursor relative to the screen
<html>
<head>
<script type="text/javascript">
function coordinates(event)
{
x=event.screenX
y=event.screenY
alert("X=" + x + " Y=" + y)
}
</script>
</head>
<body onmousedown="coordinates(event)">
<p>
点击你鼠标的左键
</p>
</body>
</html>5. What are the current coordinates of the mouse cursor?
<html>
<head>
<script type="text/javascript">
function coordinates(event)
{
x=event.x
y=event.y
alert("X=" + x + " Y=" + y)
}
</script>
</head>
<body onmousedown="coordinates(event)">
<p>
点击你鼠标的左键
</p>
</body>
</html>6. Is the shift key pressed?
<html>
<head>
<script type="text/javascript">
function isKeyPressed(event)
{
if (event.shiftKey==1)
{
alert("shit键按下了!")
}
else
{
alert("shit键没有按下!")
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>按下shit键，点击你鼠标的左键</p>
</body>
</html>7. What is currently clicked? Which element
<html>
<head>
<script type="text/javascript">
function whichElement(e)
{
var targ
if (!e) var e = window.event
if (e.target) targ = e.target
else if (e.srcElement) targ = e.srcElement
if (targ.nodeType == 3) // defeat Safari bug
targ = targ.parentNode
var tname
tname=targ.tagName
alert("你点击了 " + tname + "元素")
}
</script>
</head>
<body onmousedown="whichElement(event)">
<p>在这里点击看看，这里是p</p>
<h3>或者点击这里也可以呀，这里是h3</h3>
<p>你想点我吗？？</p>
<img border="0" src="../myCode/btn.gif" width="100" height="26" alt="pic">
</body>
</html>The above is the entire content of this article. I hope it will be helpful to everyone's learning. For more related content, please pay attention to the PHP Chinese website!
Related recommendations:
About the calculation method of JS function call stack stack size
Implementation of JavaScript image amplification technology
The above is the detailed content of About the use of js mouse button events and keyboard button events. For more information, please follow other related articles on the PHP Chinese website!
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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
Razer | Pokémon Gengar wireless mouse and mouse pad are now available, with a set price of 1,549 yuan
Jul 19, 2024 am 04:17 AM
According to news from this site on July 12, Razer today announced the launch of the Razer|Pokémon Gengar wireless mouse and mouse pad. The single product prices are 1,299 yuan and 299 yuan respectively, and the package price including the two products is 1,549 yuan. This is not the first time that Razer has launched Gengar co-branded peripheral products. In 2023, Razer launched the Gengar-style Yamata Orochi V2 gaming mouse. The two new products launched this time all use a dark purple background similar to the appearance of the Ghost, Ghost, and Gengar families. They are printed with the outlines of these three Pokémon and Poké Balls, with the character Gengar in the middle. A large, colorful image of a classic ghost-type Pokémon. This site found that the Razer|Pokémon Gengar wireless mouse is based on the previously released Viper V3 Professional Edition. Its overall weight is 55g and equipped with Razer’s second-generation FOC
HP launches Professor 1 three-mode soft mouse: 4000DPI, Blue Shadow RAW3220, initial price 99 yuan
Apr 01, 2024 am 09:11 AM
According to news from this website on March 31, HP recently launched a Professor1 three-mode Bluetooth mouse on JD.com, available in black and white milk tea colors, with an initial price of 99 yuan, and a deposit of 10 yuan is required. According to reports, this mouse weighs 106 grams, adopts ergonomic design, measures 127.02x79.59x51.15mm, has seven optional 4000DPI levels, is equipped with a Blue Shadow RAW3220 sensor, and uses a 650 mAh battery. It is said that it can be used on a single charge. 2 months. The mouse parameter information attached to this site is as follows:
How to set up handwriting input method on Apple mobile phone keyboard
Mar 08, 2024 pm 02:30 PM
Apple mobile keyboard users want to set up the handwriting input method, but don’t know how to do it. It’s actually very simple. Users can directly select the handwriting input method in the phone’s keyboard settings. If not, they can also manually add a handwriting input method. How to set the handwriting input method on the Apple mobile phone keyboard A: Enable the handwriting input method directly in the keyboard settings 1. When Apple users use the input method, the handwriting input method is enabled by default. 2. Users only need to click and hold the lower left corner to select the handwriting input method while typing. 3. If the user does not have a handwriting input method in his mobile phone, he can also add it manually. 4. The user enters the settings, finds the universal keyboard settings, and adds the handwriting input option to the first keyboard. 5. Use handwriting input method to
VGN co-branded 'Elden's Circle' keyboard and mouse series products are now on the shelves: Lani / Faded One custom theme, starting from 99 yuan
Aug 12, 2024 pm 10:45 PM
According to news from this site on August 12, VGN launched the co-branded "Elden Ring" keyboard and mouse series on August 6, including keyboards, mice and mouse pads, designed with a customized theme of Lani/Faded One. The current series of products It has been put on JD.com, priced from 99 yuan. The co-branded new product information attached to this site is as follows: VGN丨Elden Law Ring S99PRO Keyboard This keyboard uses a pure aluminum alloy shell, supplemented by a five-layer silencer structure, uses a GASKET leaf spring structure, has a single-key slotted PCB, and the original height PBT material Keycaps, aluminum alloy personalized backplane; supports three-mode connection and SMARTSPEEDX low-latency technology; connected to VHUB, it can manage multiple devices in one stop, starting at 549 yuan. VGN丨Elden French Ring F1PROMAX wireless mouse the mouse
In which folder is the Razer mouse driver located?
Mar 02, 2024 pm 01:28 PM
Many users don't know where the files installed by their Razer drivers go. These driver files are usually installed on the system disk, which is the C drive of the computer. The specific location is in the RAZE folder under programfiles. In which folder is the Razer mouse driver located? A: In the RAZE folder under programfiles on the system C drive. Generally, the driver will be installed on the C drive, just find it according to the location. Introduction to Razer mouse driver installation method 1. After downloading the file from the official website, double-click to run the downloaded EXE file. 2. Wait for the software to load. 3. Here you can choose which driver you want to install. 4. After selecting, click "Install" in the lower right corner.
Recommended: Excellent JS open source face detection and recognition project
Apr 03, 2024 am 11:55 AM
Face detection and recognition technology is already a relatively mature and widely used technology. Currently, the most widely used Internet application language is JS. Implementing face detection and recognition on the Web front-end has advantages and disadvantages compared to back-end face recognition. Advantages include reducing network interaction and real-time recognition, which greatly shortens user waiting time and improves user experience; disadvantages include: being limited by model size, the accuracy is also limited. How to use js to implement face detection on the web? In order to implement face recognition on the Web, you need to be familiar with related programming languages and technologies, such as JavaScript, HTML, CSS, WebRTC, etc. At the same time, you also need to master relevant computer vision and artificial intelligence technologies. It is worth noting that due to the design of the Web side
How to set the skin for the WeChat keyboard How to set the skin for the WeChat keyboard
Mar 13, 2024 am 09:04 AM
How to set the skin for WeChat keyboard? WeChat Keyboard is a very smart mobile phone input method software. This software has many user-friendly functions. It allows users to choose their own input mode and find the expressions they want as quickly as possible on this software. send out. This software also allows users to change the skin of the keyboard themselves. Many users are not sure how to change the skin. The editor below has compiled the skin changing methods for your reference. How to set the WeChat keyboard skin In WeChat, SMS or other applications that require the use of the keyboard on your phone, you can click the input method settings icon in the upper left corner of the keyboard to enter the settings page to view the function setting options for various input methods. 2. Click "Personalized Skin" on the settings page of the input method.
Colorful launches M900 Pro wireless gaming mouse: right-hand ergonomic shape, 8K Nano receiver, starting from 199 yuan
Mar 23, 2024 pm 05:16 PM
According to news from this website on March 22, Delux launched the M900Pro wireless gaming mouse with a right-handed ergonomic shape. The first pre-sale price starts at 199 yuan. Colorful M900Pro is designed with right-handed ergonomics and is built for users with medium to large hands. It weighs 63g and is sprayed with a matte UV coating. The mouse uses the PAW3395 sensor, the original Nano receiver supports 8000Hz wireless rate of return, is equipped with Huannuo blue shell pink dot micro-movement and comes standard with an RGB charging base and anti-slip stickers. In addition, the mouse also supports functions such as LOD adjustment, full-key customization, custom ripple control, and straight line correction. It is equipped with PTFE foot pads, 1.6m paracord cord, and a built-in receiver storage compartment. This site summarizes the specific parameters of this mouse as follows: Color: black, white, red
