Example
| The code is as follows |
Copy Code |
| function Getrepeatdata (input) {
var arr = input;
var rdata = {};
for (var i in arr) {
&nbs p; var c = arr[i];
rdata1? (rdata1++): (rdata1= 1)
}
for (var k in rdata) {
if (rdata[k ] {///Word repeat more than 4 times, returns false
return false
}else{
>=4 return True
}
}
}
var content=$ (' #content '). Val ();
Var repeat= Getrepeatdata (content);
var regimg=/(https|http|ftp): \/\/) {1}.+?. (jpg|gif|jpeg|png) $/gi;
if (!regimg.test (content)) {//filter picture address in content
if (repeat==false) {
alert ("Pro, Do not irrigation yo ~ ");
return false;
}
|
Analysis Although this can be done some processing but if we do not go through this code, but we do a submission page is not used, so we need to use PHP to deal with, such as adding a verification code can be solved.
Submit the page code as follows a.php code as follows:
| The code is as follows |
Copy Code |
| <form id= "Form1" Name= "Form1" method= "Post" action= "t2.php" > <p> description <input type= "text" name= "Titile"/> </p> <p> <input type= "Submit" name= "Submission" value= "submitted"/> </p> </form> <?php Setcookie ("Onlypost", ' t '); Set the cookie to bring the time value. Like some of the forums to prevent irrigation can put some of your basic information into the inside. ?> The processing page b.php code is as follows: <?php if ($_cookie[' onlypost '] = = ' t ') { Print_r ($_cookie); Processing of committed content if validation succeeds print "OK"; Setcookie ("Onlypost", ' f '); Change the cooike value to delete it too } ?> |
Body
As a disadvantage of processing: If the client prohibits cookies, this method will have no effect, please note.
We can use PHP MySQL to solve
Database for jokes, table for jokes, add a joke for example
MySQL Form submission page:
| The code is as follows |
Copy Code |
| <HTML>
<HEAD>
<TITLE> our List of jokes </TITLE>
</HEAD>
<BODY>
<?php
Session_Start (); Enable session
$timetime = time ();
$key = "Sess_". $time; Generate a random session key based on time
$_session[$key] = $time; Set the value of the session
?>
<form action= "Input.php?tjid=1" method=post>
<p>type your joke here:<br>
<textarea name= "Joketext" rows=10 cols=40 wrap></textarea><br>
Pass the key of the session to the server-side processing by hiding the form
<input type= "hidden" name= session_key "value=" <?php echo $key;? > "/>
<input type=submit name= "Submitjoke" value= "SUBMIT" >
</FORM>
</BODY>
</HTML>
Processing page:
<HTML>
<HEAD>
<TITLE> our List of jokes </TITLE>
</HEAD>
<BODY>
To connect to a database:
<?php
$dbcnx =mysql_connect ("localhost", "root", "Hu Jintao");
if (! $dbcnx) {
Echo ("<p>unable to connect to".)
"Database server at this time.</p>");
Exit ();
}
Select the Jokes database
if (! @mysql_select_db ("jokes")) {
Echo ("<p>unable to locate the joke").
"Database at this time.</p>");
Exit ();
}
Start session:
Session_Start ();
$key = $_post[' Session_key '];
if (! $key | | $_session[$key]!= substr ($key, 5)) {
If no session_key parameters are passed
Or the number after the Session_key parameter value is truncated Sess_ does not match the session parameter value
Unset ($_session[$key]); Delete Session value
echo "Chu CuO la";//Then consider whether you want to prompt for an error, or go to another page
Exit (); Terminate page code execution
}
The following data write operations
if ("SUBMIT" ==$_post["Submitjoke"]) {
$sql = "INSERT into Jokes (joketext)
VALUES (' $_post[joketext] ')
";
if (mysql_query ($sql)) {
Echo ("<p>your joke has been added.</p>");
} else {
Echo ("<p>error adding submitted joke:".
Mysql_error (). "</P>");
}
Delete session after data operation is complete
Unset ($_session[$key]);
}
?>
Show jokes content:
<P> Here are all the jokes in our database: </P>
<BLOCKQUOTE>
<?php
$result = mysql_query (
"SELECT * from jokes");
if (! $result) {
Echo ("<p>error performing Query:".)
Mysql_error (). "</P>");
Exit ();
}
Display the text of each joke in a paragraph
while ($row = Mysql_fetch_array ($result)) {
Echo ("<P>" $row ["Joketext"]. "</P>");
}
?>
</BODY>
</HTML> |
