PHP and JS call each other_PHP tutorial-PHP Tutorial-php.cn

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);}";

A good way to call js files in php

ok("aaaaaa!");

2.php content:

$userId=100;

if($_GET["action"]=="ok")

{

echo "I'm OK!";

}

else

{

echo "I'm not OK!";

}

Please Click

$email="aa";

www.2cto.com

echo "

Related labels：

php value document Way of Simple illustrate transfer page

source：php.cn

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