Common HTML Regular expressions
1. Only numbers and English can be entered:
Copy Code code as follows:
<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:
Copy Code code as follows:
<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 angle can be entered:
Copy Code code as follows:
<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 are entered:
Copy Code code as follows:
<input onkeyup= "Value=value.replace (/[^/u4e00-/u9fa5]/g,") "
Onbeforepaste= "Clipboarddata.setdata" (' Text ', Clipboarddata.getdata (' text '). Replace (/[^/u4e00-/u9fa5]/g, ') "
Id= "Text4" name= "TEXT4" >
5. Email Address verification:
Copy Code code as follows:
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|net|com|com|gov|gov|mil|mil|org|org|edu|edu|int|int) $ "
var re = new RegExp (Regu);
if (S.search (re)!=-1) {
return true;
} else {
Window.alert ("Please enter a valid legal e-mail address!") ")
return false;
}
6. ID Card:
Copy Code code as follows:
7.17 Kinds of regular expressions
Copy Code code as follows:
"^//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+)? $"//nonnegative floating-point number (positive float + 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 of 26 English letters
"^[a-z]+$"//A string of 26 uppercase letters
"^[a-z]+$"///a string consisting of 26 lowercase letters
"^[a-za-z0-9]+$"//A string of numbers and 26 English letters
"^//w+$"//A string of numbers, 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 dashed box when the Cancel button is pressed
Add attribute value in input hidefocus or hidefocus=true
2. Read-only text box contents
Add attribute value in input readonly
3. Prevent back-emptying of the text document (you can make the style content as a class reference)
<input Style=behavior:url (#default #savehistory); Type=text
Id=opersistinput>
The 4.ENTER key allows the cursor to move to the next input box
<input onkeydown= "if (event.keycode==13) event.keycode=9" >
5. Only for Chinese (with flashing)
Copy Code code as follows:
<input onkeyup= "value="/value.replace (/["-~]/g,") "
Onkeydown= "if (event.keycode==13) event.keycode=9" >
6. Only for numbers (with flashing)
Copy Code code as follows:
<input onkeyup= "value="/value.replace (/["^/d]/g,")
"Onbeforepaste=" clipboarddata.setdata (' text ', Clipboarddata.getdata (' text '). Replace (/[^/d]/g, ') ">
7. Only for numbers (no flashing)
Copy Code code as follows:
<input ime-mode:disabled "
Onkeydown= "If" (event.keycode==13) event.keycode=9 "onkeypress=" if
((event.keycode<48 | | event.keycode>57)) Event.returnvalue=false ">
8. Can only input English and digital (with flashing)
Copy Code code as follows:
<input onkeyup= "value="/value.replace (/[/w]/g, "')"
Onbeforepaste= "Clipboarddata.setdata" (' Text ', Clipboarddata.getdata (' text '). Replace (/[^/d]/g, ') ">
9. Shielding Input Method
Copy Code code as follows:
<input type= "text" name= "url" ime-mode:disabled "
Onkeydown= "if (event.keycode==13) event.keycode=9" >
10. Only digits, decimal points, minus (-) characters (no flashing) can be entered.
Copy Code code as follows:
<input onkeypress= "If" (event.keycode!=46 && event.keycode!=45 &&
(event.keycode<48 | | event.keycode>57)) Event.returnvalue=false ">
11. Can only enter two decimal places, three decimal places (with flashing)
Copy Code code as follows:
<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}$/.test (value))
{Event.returnvalue=false} "Id=text_kfxe name=text_kfxe>
12. Only digits and commas can be entered
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" > <HTML> <HEAD> <TITLE> New Document ;/title> <meta name= "generator" content= "EditPlus" > <meta name= "Author" content= "" > <meta NAME= "Keyw Ords "Content=" "> <meta name=" Description "content=" "> </HEAD> <BODY> <input onkeyup= ' Check (th
is) '/> </BODY> <script> function Check (obj) {var sreg =/^-+.*/g;
var zero =/^0[1-9]+\.*\d*/g;
var val = obj.value;
var plus = ';
if (Sreg.test (val)) {val = Val.replace (/-+/g, ');
plus = '-';
} val = Val.replace (/\s+/g, ');
if (/^\.+.*$/.test (val)) {val = '; } val = Val.replace (/[^\d\.]
/,''); val = val.replace (/(^\d+\.{
1}) (\d*). */g, ' $1$2 ');
val = val.replace (/(^\d+\.\d{3}) \d*/g, ' $ ');
val = Val.replace (/^[0]* (0{1}) ([1-9]*) (. *)/g, ' $1$2$3 ');
if (Zero.test (val)) {val = Val.replace (/0 ([1-9]+) (. *) $/, ' $1$2 ');
} obj.value = Plus+val;
} </script> </HTML>
13, the replacement of the contents of the non-digital and Chinese and English characters
function Renumdou (str) {
var regexp =/[^\d,,]]*/g;
Newstr=str.replace (RegExp, "");
Return NEWSTR
}
