PHP and JS call each other_PHP tutorial

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!";

}

?>

Please Click

<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 "

";

?>

 

http://www.bkjia.com/PHPjc/477647.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/477647.htmlTechArticle1 JS方式调用PHP文件并取得php中的值 举一个简单的例子来说明: 如在页面a.html中用下面这句调用: script type=text/javascript src=b.php?action=test/scrip...

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