This article mainly introduces how to control the input box of JavaScript to only input Chinese characters, numbers, and English characters. The character input restriction function is implemented based on regular expression verification, which has
In many cases, it is necessary to restrict the numeric input in the text box. I have tried many methods, but it is not ideal. I decided to implement one by myself, next we will introduce the comparison between the methods we have used and the custom
Common HTML Regular Expressions1. Only numbers and English letters can be entered:Copy codeThe Code is as follows:Onbeforepaste = "clipboardData. setData ('text', clipboardData. getData ('text'). replace (/[^/d]/g ,''))"ID = "Text1" NAME = "Text1"> 2
Common HTML Regular Expressions 1. Only numbers and English characters can be entered:
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/d]/g ,''))"
Id = "text1" name = "text1"> 2. Only numbers can be
A text box must be limited to numbers (or decimal places) and support IE and Firefox. Next we will introduce how to solve this problem, however, I cannot find the one that meets the requirements when I use it temporarily today, so I will write it
restricting text boxes with regular expressions can only enter numbers, decimal points, English letters, Chinese characters and other types of code
2. Only numbers can be entered and the decimal point may be lost.
3. Number and decimal method two
4
This chapter describes the input types for elements. input type: text
defines a single-line input field for text entry: instance
a
name:
last
name :
Give it a shot yourself.
The above HTML code looks like this in the browser: the
Sometimes you need to limit the type of text box input content, this section share the regular expression limit text box can only enter numbers, decimal points, English letters, Chinese characters and other code.For example, enter a positive integer
Http://www.cnblogs.com/kingwolfofsky/archive/2011/07/21/2112299.html
floating point numbers
1. What are floating point numbers
In the process of computer system development, several methods have been proposed to express real numbers. Typically, for
This article focuses on the properties of the HTML input tag, as well as the specific usage summary of the HTML input tag. Let's take a look at what the HTML input tag does.
First of all, the properties of the HTML input tag:
1.type: This property
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