限制文本框只能输入数字,小数点,英文字母,汉字
1.文本框只能输入数字代码(小数点也不能输入): input onkeyup="this.value=this.value.replace(//D/g,'')" onafterpaste="this.value=this.value.replace(//D/g,'')" 2.只能输入数字,能输小数点. (方法1) input onkeyup="if(isNaN(value))execCommand('undo'
1.文本框只能输入数字代码(小数点也不能输入):
2.只能输入数字,能输小数点. (方法1)
3.数字和小数点方法二
4.只能输入字母和汉字
5.只能输入英文字母和数字,不能输入中文
6.只能输入数字和英文
7.小数点后只能有最多两位(数字,中文都可输入),不能输入字母和运算符号:
8.小数点后只能有最多两位(数字,字母,中文都可输入),可以输入运算符号:
调用onkeypress事件实现 限制文本框只能输入数字及小数点(并且只能输入1次)
function KeyPress(objTR)
{
var txtval = objTR.value;
var key = event.keyCode;
if((key 57)&&key !=46)
{
event.keyCode = 0;
}
else
{
if(key == 46)
{
if(txtval.indexOf(".") != -1 || txtval.length == 0)
event.keyCode = 0;
}
}
}
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
1386
52
Windows input encounters hang or high memory usage [Fix]
Feb 19, 2024 pm 10:48 PM
The Windows input experience is a key system service responsible for processing user input from various human interface devices. It starts automatically at system startup and runs in the background. However, sometimes this service may automatically hang or occupy too much memory, resulting in reduced system performance. Therefore, it is crucial to monitor and manage this process in a timely manner to ensure system efficiency and stability. In this article, we will share how to fix issues where the Windows input experience hangs or causes high memory usage. The Windows Input Experience Service does not have a user interface, but it is closely related to handling basic system tasks and functions related to input devices. Its role is to help the Windows system understand every input entered by the user.
Stremio subtitles not working; error loading subtitles
Feb 24, 2024 am 09:50 AM
Subtitles not working on Stremio on your Windows PC? Some Stremio users reported that subtitles were not displayed in the videos. Many users reported encountering an error message that said "Error loading subtitles." Here is the full error message that appears with this error: An error occurred while loading subtitles Failed to load subtitles: This could be a problem with the plugin you are using or your network. As the error message says, it could be your internet connection that is causing the error. So please check your network connection and make sure your internet is working properly. Apart from this, there could be other reasons behind this error, including conflicting subtitles add-on, unsupported subtitles for specific video content, and outdated Stremio app. like
How to remove comment restrictions on video accounts? What is the word limit for comments on a video account?
Mar 22, 2024 pm 02:11 PM
With the popularity of video accounts on social media, more and more people are beginning to use video accounts to share their daily lives, insights and stories. However, some users may experience comments being restricted, which can leave them confused and dissatisfied. 1. How to remove comment restrictions on video accounts? To lift the restriction on commenting on a video account, you must first ensure that the account has been properly registered and real-name authentication has been completed. Video accounts have requirements for comments. Only accounts that have completed real-name authentication can lift comment restrictions. If there are any abnormalities in the account, these issues need to be resolved before comment restrictions can be lifted. 2. Comply with the community standards of the video account. Video accounts have certain standards for comment content. If the comment involves illegal content, you will be restricted from speaking. To lift comment restrictions, you need to abide by the community of the video account
How to change Google Chrome to Chinese mode?
Mar 13, 2024 pm 07:31 PM
How to change Chinese to English in Google Chrome? Some friends want to set Google Chrome to English so that they can continuously improve their English during use. So how to set it to English? Google Chrome is Chinese by default. Below, I will show you how to set the language of Google Chrome to English. Let’s take a look. Setting steps: 1. Open [Google Chrome], as shown in the figure below. 2. Click the [three dots] menu in the upper right corner of the Google Chrome interface, as shown in the figure below. 3. After entering the menu page, find [Settings], as shown in the figure below. 4. After entering the settings page, click the [Language] option, as shown in the figure below. 5. Select [Add Language] in the language interface, as shown in the figure below.
How to search for text across all tabs in Chrome and Edge
Feb 19, 2024 am 11:30 AM
This tutorial shows you how to find specific text or phrases on all open tabs in Chrome or Edge on Windows. Is there a way to do a text search on all open tabs in Chrome? Yes, you can use a free external web extension in Chrome to perform text searches on all open tabs without having to switch tabs manually. Some extensions like TabSearch and Ctrl-FPlus can help you achieve this easily. How to search text across all tabs in Google Chrome? Ctrl-FPlus is a free extension that makes it easy for users to search for a specific word, phrase or text across all tabs of their browser window. This expansion
How to hide the English keyboard in Win11
Jan 03, 2024 pm 09:45 PM
Some friends do not need to use the English keyboard, but only need to use the Chinese keyboard. At this time, they will find the English keyboard very troublesome and want to hide it. However, we cannot hide it, but we can directly delete the English input method. Let’s follow the editor. Take a look. How to hide the English keyboard in win11 1. The English keyboard cannot be hidden, but we can delete it directly in the input method. 2. First enter "Settings" through the start menu 3. Then select "Time & Language" 4. Then enter "Language & Region" and click "Addakeyboard" below to add keyboard shortcuts. 5. Then click on the input method we want, and then click the arrow in the lower left corner to move it to
Learn how to open win11 text documents
Jan 02, 2024 pm 03:54 PM
Text documents are very important files in the system. They not only allow us to view a lot of text content, but also provide programming functions. However, after the win11 system was updated, many friends found that text documents could not be opened. At this time, we can open them directly by running them. Let’s take a look. Where to open a text document in win11 1. First press "win+r" on the keyboard to call up run. 2. Then enter "notepad" to create a new text document directly. 3. If we want to open an existing text document, we can also click on the file in the upper left corner and then click "Open".
What are the limitations and considerations for C++ function overloading?
Apr 13, 2024 pm 01:09 PM
Restrictions on function overloading include: parameter types and orders must be different (when the number of parameters is the same), and default parameters cannot be used to distinguish overloading. In addition, template functions and non-template functions cannot be overloaded, and template functions with different template specifications can be overloaded. It's worth noting that excessive use of function overloading can affect readability and debugging, the compiler searches from the most specific to the least specific function to resolve conflicts.


