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Some common form submission Detection Functions

Source: Internet
Author: User
Tags microsoft frontpage
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Function getlenb (tstr)
{
J = 0
For (I = 0; I <tstr. length; I ++)
{
If (tstr. charcodeat (I)> 255)
J ++;
J ++;

}
Return J;
}

Function checkint (tstr)
{
Re =/[^ 0-9]/;
Rp = tstr. Search (re );
Return RP;
}

Function checkhz (tstr)
{
For (I = 0; I <tstr. lengt; I ++)
If (tstr. charcodeat (I)> 255)
{
Return 1;
Break;
}
// Alert (string. fromcharcode (258 ))
Return 0;

}

Function checkstr (tstr)
{
// Re =/[^ a-zA-Z0-9 _]/;
Re = // w /;
Rp = tstr. Search (re );
Return RP;

}
Function checkhtml (tstr)
{
// Re =/[^ a-zA-Z0-9 _]/;
Re =/<(. *)>. * <// 1> /;
Rp = tstr. Search (re );
Return RP;

}

Function checkblank (tstr)
{
// Re =/[^ a-zA-Z0-9 _]/;
Re = // s /;
Rp = tstr. Search (re );
Return RP;

}

Function checkemail (tstr)
{
RE1 =/([/W/-/.]) + [@] {1} ([/W/-]) + (/. [/W/-]) + /;
Rp1 = tstr. Search (RE1 );

Re2 =/[^ a-zA-Z0-9 _/./-/@]/;
RP2 = tstr. Search (re2 );
// Alert (rp1)
If (rp1 =-1 | RP2! =-1)
Return false;
Else
Return true;
}

Function checksqlstr (tstr)
{
RE1 =/[/^/s ',/S/$]/;

Rp1 = tstr. Search (RE1 );
// RP2 = tstr. Search (re2 );
If (rp1! =-1)
Return false
Else
Return true;

}

Another validation uses a regular expression:

<HTML>

<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<Meta name = "generator" content = "Microsoft FrontPage 4.0">
<Meta name = "progid" content = "FrontPage. Editor. Document">
<Title> Regular Expression 1 </title>
</Head>

<Body>
<Form method = post action = "">
For a regular expression <br> regular. Only numbers and English letters can be entered:
<Input onkeyup = "value = value. Replace (/[/W]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text '). replace (/[^/d]/g, '')"> <br> „. only numbers can be entered:
<Input onkeyup = "value = value. Replace (/[^/d]/g ,'')"
Onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text '). replace (/[^/d]/g, '')"> <br> .... 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, '')"> <br> Reset †. only Chinese characters can be entered:
<Input onkeyup = "value = value. Replace (/[-~] /G, '')" onbeforepaste = "clipboardData. setdata ('text', clipboardData. getdata ('text '). replace (/[^/u4e00-/u9fa5]/g, '')"> <br>
<Input type = "Submit">
</Form>

<P> & quot; ^ // D + $ & quot; // non-negative integer (positive integer + 0) <br>
& Quot; ^ [0-9] * [1-9] [0-9] * $ & quot; // positive integer <br>
& Quot; ^ (-// D +) | (0 +) $ & quot; // non-positive integer (negative integer + 0) <br>
& Quot; ^-[0-9] * [1-9] [0-9] * $ & quot; // negative integer <br>
& Quot; ^ -? // D + $ & quot; // integer <br>
& Quot; ^ // D + (//. // D + )? $ & Quot; // non-negative floating point number (Positive floating point number + 0) <br>
& Quot; ^ ([0-9] + //. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * //. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ & quot; // Positive floating point number <br>
& Quot; ^ (-/d + (//. // D + )?) | (0 + (//. 0 + )?)) $ & Quot; // non-Positive floating point number (negative floating point number)
+ 0) <br>
& Quot; ^ (-([0-9] + //. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * //. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ & quot; // negative floating point number <br>
& Quot; ^ (-? // D +) (//. // D + )? $ & Quot; // floating point number <br>
& Quot; ^ [A-Za-Z] + $ & quot; // a string consisting of 26 letters <br>
& Quot; ^ [A-Z] + $ & quot; // string consisting of 26 uppercase letters <br>
& Quot; ^ [A-Z] + $ & quot; // a string consisting of 26 lowercase letters <br>
& Quot; ^ [A-Za-z0-9] + $ & quot; // string consisting of digits and 26 letters <br>
& Quot; ^ // W + $ & quot; // a string consisting of digits, 26 English letters, or underscores <br>
& Quot; ^ [// w-] + (//. [// w-] +) * @ [// w-] + (//. [// w-] +) + $ & quot; // email address <br>
& Quot; ^ [A-Za-Z] +: // (// W + (-/W + )*)(//. (// W + (-/W + )*))*(//? // S *)? $ & Quot; // URL </P>

</Body>

</Html>

 

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
common math functions php common functions w3c html json form submission php script for form submission javascript form functions dmoz submission idfa submission

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