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PHP and JS call each other_PHP tutorial
- WBOYOriginal
- 2016-07-14 10:09:29976browse
1 Call PHP files using JS and get the value in php
Give a simple example to illustrate:
For example, in page a.html, use the following sentence to call:
There is this piece of PHP code in b.php:
When the a.html file is executed, the b.php file will be called, and the output of the b.php file will be executed as a JS statement, so a prompt box will pop up here with the value of the JS variable jstext. That is the value assigned to jstext in the PHP file.
Summary:
Use JS to call the file in HTML to call the PHP file, then the output of the PHP file will be used as JS code by the calling page.
2 php calls the value in js
There is such a piece of code in the z.php page:
document.write(url) "; echo $key; ?>
3 php calls methods (functions) in js
test();"; ?>
4 JS calls PHP variables
(1)
$userId=100;
?> <script></div>
<div>var userId;</div>
<div>userId=document.getElementByIdx_x_x_x("userId").value;</div>
<div>alert (userId);</div>
<div></script>
(2)
$url = 'Changed URL'; //Define variables
?>
5 ----------------------------------
6 The js and php written by yourself call each other
1.php content:
//echo ""; //The simplest php call js
//echo "
";
//echo "aaaa"; //Hyperlink in php
//echo ""; //Sometimes it needs to be executed in PHP During the process, a JavaScript custom function needs to be called (an error occurred during verification)
echo "function ok(msg){alert(msg);}";
?>
ok("aaaaaa!");
2.php content:
$userId=100;
?>
<script></div>
<div>var userId;</div>
<div>userId=document.getElementByIdx_x("userId").value;</div>
<div>alert (userId);</div>
<div></script>
if($_GET["action"]=="ok")
{
echo "I'm OK!";
}
else
{
echo "I'm not OK!";
}
?>
<script></div>
<div>function isMail(PostString)</div>
<div>{</div>
<div>re=//w*/</div>
<div>if(re.test(PostString))</div>
<div>{</div>
<div>return true;</div>
<div>}</div>
<div>else</div>
<div>{</div>
<div>return false;</div>
<div>}</div>
<div>}</div>
<div>function test(){</div>
<div>if (isMail(<?php echo $email?>))</div>
<div>{document.write("<?php echo "N";?>");}</div>
<div>else</div>
<div>{document.write('<?php echo 'Y';?>');}</div>
<div>}</div>
<div></script>
$email="aa";
?>
www.2cto.com
echo "
";
?>
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