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how to execute php code within javascript

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無奈伤痛
無奈伤痛 2020-11-30 03:47
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  • 执念已碎
    2020-11-30 03:53

    put your php into a hidden div and than call it with javascript

    php part

    <div id="mybox" style="visibility:hidden;"> some php here </div>

    javascript part

    var myfield = document.getElementById("mybox");
myfield.visibility = 'visible';

    now, you can do anything with myfield...

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  • 忘了有多久
    2020-11-30 03:55

    If you do not want to include the jquery library you can simple do the following

    a) ad an iframe, size 0px so it is not visible, href is blank

    b) execute this within your js code function

     window.frames['iframename'].location.replace('http://....your.php');

    This will execute the php script and you can for example make a database update...

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  • [愿得一人]
    2020-11-30 03:57

    Any server side stuff such as php declaration must get evaluated in the host file (file with a .php extension) inside the script tags such as below

    <script type="text/javascript">
    var1 = "<?php echo 'Hello';?>";
</script>

    Then in the .js file, you can use the variable

    alert(var1);

    If you try to evaluate php declaration in the .js file, it will NOT work

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  • 被撕碎了的回忆
    2020-11-30 04:08

    You could use http://phpjs.org/ http://locutus.io/php/ it ports a bunch of PHP functionality to javascript, but if it's just echos, and the script is in a php file, you could do something like this:

    alert("<?php echo "asdasda";?>");

    don't worry about the shifty-looking use of double-quotes, PHP will render that before the browser sees it.

    as for using ajax, the easiest way is to use a library, like jQuery. With that you can do:

    $.ajax({
  url: 'test.php',
  success: function(data) {
    $('.result').html(data);
  }
});

    and test.php would be:

    <?php 
  echo 'asdasda';
?>

    it would write the contents of test.php to whatever element has the result class.

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  • 挽巷
    2020-11-30 04:08

    If you just want to echo a message from PHP in a certain place on the page when the user clicks the button, you could do something like this:

    <button type="button" id="okButton" onclick="funk()" value="okButton">Order now</button>
<div id="resultMsg"></div>
<script type="text/javascript">
function funk(){
  alert("asdasd");
  document.getElementById('resultMsg').innerHTML('<?php echo "asdasda";?>');
}
</script>

    However, assuming your script needs to do some server-side processing such as adding the item to a cart, you may like to check out jQuery's http://api.jquery.com/load/ - use jQuery to load the path to the php script which does the processing. In your example you could do:

    <button type="button" id="okButton" onclick="funk()" value="okButton">Order now</button>
<div id="resultMsg"></div>
<script type="text/javascript">
function funk(){
  alert("asdasd");
  $('#resultMsg').load('path/to/php/script/order_item.php');
}
</script>

    This runs the php script and loads whatever message it returns into <div id="resultMsg">.

    order_item.php would add the item to cart and just echo whatever message you would like displayed. To get the example working this will suffice as order_item.php:

    <?php
// do adding to cart stuff here
echo 'Added to cart';
?>

    For this to work you will need to include jQuery on your page, by adding this in your <head> tag:

    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"></script>
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  • 攒了一身酷
    2020-11-30 04:10

    May be this way:

        <?php 
     if($_SERVER['REQUEST_METHOD']=="POST") {
       echo 'asdasda';
     }
    ?>

    <form method="post">
    <button type="submit" id="okButton">Order now</button>
</form>
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