Common HTML Regular Expressions 1. Only numbers and English characters can be entered:
<Input onkeyup = "value = value. Replace (/[/W]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/d]/g ,''))"
Id = "text1" name = "text1"> 2. Only numbers can be entered:
<Input onkeyup = "value = value. Replace (/[^/d]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/d]/g ,''))"
Id = "text2" name = "text2"> 3. Only the full-width fields can be entered:
<Input onkeyup = "value = value. Replace (/[^/uff00-/Uffff]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/uff00-/Uffff]/g ,''))"
Id = "text3" name = "text3"> 4. Only Chinese characters can be entered:
<Input onkeyup = "value = value. Replace (/[^/u4e00-/u9fa5]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/u4e00-/u9fa5]/g ,''))"
Id = "text4" name = "text4"> 5. Verify the email address:
VaR regu =
"^ ([0-9a-za-z] +) | ([0-9a-za-z] + [_. 0-9a-za-z-] * [0-9a-za-z] +) @ ([a-zA-Z0-9-] + [.]) + ([A-Za-Z] {2} | net | com | Gov | mil | org | Edu | int |) $"
VaR Re = new Regexp (regu );
If (S. Search (re )! =-1 ){
Return true;
} Else {
Window. Alert ("enter a valid and valid email address! ")
Return false;
}
6. ID card:
"^ // D {17} (// d | x) $"
7.17 Regular Expressions
"^ // D + $" // non-negative integer (positive integer + 0)
"^ [0-9] * [1-9] [0-9] * $" // positive integer
"^ (-// D +) | (0 +) $" // non-positive integer (negative integer + 0)
"^-[0-9] * [1-9] [0-9] * $" // negative integer
"^ -? // D + $ "// integer
"^/D + (//. // D + )? $ "// Non-negative floating point number (Positive floating point number + 0)
"^ ([0-9] + //. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * //. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ "// Positive floating point number" ^ (-// D + (//. // D + )?) | (0 + (//. 0 + )?)) $ "// Non-Positive floating point number (negative floating point number + 0)
"^ (-([0-9] + //. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * //. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ "// negative floating point number" ^ (-? // D +) (//. // D + )? $ "// Floating point number
"^ [A-Za-Z] + $" // a string consisting of 26 English letters
"^ [A-Z] + $" // a string consisting of 26 uppercase letters
"^ [A-Z] + $" // a string consisting of 26 lowercase letters
"^ [A-Za-z0-9] + $" // string consisting of digits and 26 letters
"^ // W + $" // a string consisting of digits, 26 English letters, or underscores
"^ [// W-] + (//. [// w-] +) * @ [// w-] + (//. [// w-] +) + $ "// email address
"^ [A-Za-Z] +: // (// W + (-/W + )*)(//. (// W + (-/W + )*))*(//? // S *)? $ "// URL
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1. The dotted box when the cancel button is pressed
Add the attribute value hidefocus or hidefocus = true in input.
2. Read-only text box content
Add the attribute value readonly in input.
3. Prevent text files from being cleared (style content can be referenced as a class)
<Input style = behavior: URL (# default # savehistory); type = text
Id = opersistinput>
4. Press enter to move the cursor to the next input box.
<Input onkeydown = "If (event. keycode = 13) event. keycode = 9">
5. It can only be Chinese (with flashing)
<Input onkeyup = "value ="/value. Replace (/["-~] /G ,'')"
Onkeydown = "If (event. keycode = 13) event. keycode = 9">
6. Only numbers are allowed (with flashing)
<Input onkeyup = "value ="/value. Replace (/["^/d]/g ,'')
"Onbeforepaste =" clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/d]/g, '')">
7. Only numbers are allowed (no flashing)
<Input ime-mode: Disabled"
Onkeydown = "If (event. keycode = 13) event. keycode = 9" onkey
PRESS = "If
(Event. keycode <48 | event. keycode> 57) event. returnvalue = false ">
8. Only English and numbers can be entered (with flashing)
<Input onkeyup = "value ="/value. Replace (/[/W]/g ,"'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text'). Replace (/[^/d]/g,'') ">
9. shielded Input Method
<Input type = "text" name = "url" ime-mode: Disabled"
Onkeydown = "If (event. keycode = 13) event. keycode = 9">
10. You can only enter numbers, decimal points, minus (-) characters (no flashing)
<Input onkeypress = "If (event. keycode! = 46 & event. keycode! = 45 &&
(Event. keycode <48 | event. keycode> 57) event. returnvalue = false ">
11. Only two decimal places can be entered, and three decimal places (with flashing)
<Input maxlength = 9
Onkeyup = "If (value. Match (/^/d {3} $/) value ="/value. Replace (value, parseint (value/10 ))"
; Value = "/value. Replace (//./D */./g, '."') "onkeypress =" If (event. keycode <48
| Event. keycode> 57) & event. keycode! = 46 & event. keycode! = 45 |
Value. Match (/^/d {3} $/) | //./d {3} $/. Test (value ))
{Event. returnvalue = false} "id = text_kfxe name = text_kfxe>
