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how to store javascript into a php variable

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Wide-eyed Wryneck answered on August 5, 2019 Popularity 10/10 Helpfulness 3/10

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how to store javascript into a php variable

Comment

//this is my code 

$value = <<<data
       <!--instead of writing data we can name it anything 
       as long as we close it with the same name, 
       and that name must not be a keyword in javascript -->

        <script>
         document.write("hello world");
        </script>
       data;

so the php variable $value will not store the string "hello world" inside it,
so the php variable is just a temporary container for the javascript code and nothing else,
and if we echo the vairable like this:-
  
echo $value;
then hello world will be printed in the browser page,
and it is the same as using echo to excute a javascript code, so it is as:-
  
echo "<script>document.write(\"hello world\")</script>"
  
  
  
//using console instead of document.write
  
$value = <<<inConsole
        <script>
         console.log("hello world");
        </script>
       inConsole;


but the value will not be printed in the console unless we echo the variable, 
like this:-

echo $value
then hello world will be printed in the console
  
  
  
//other examples such as storing data to localstorage
  
$local = <<<localstorage
        <script>
         localStorage.setItem("anything", "hello");
        </script>
        localstorage;


but this code will not work until we echo the variable such as:-
echo $local

and if we open the console and write localstorage then the item anything
with its value hello will appear
  
  
  
  
  
  
and if we want to remove the item from localstorage then use this code:-

$local = <<<localstorage
        <script>
         localStorage.removeItem("anything");
        </script>
        localstorage;

        echo $local;

note: never forget to use the echo statement or the code will not work
  
  
  
  
and if we want to get data from localstorage, we use this code

$local = <<<localstorage
        <script>
         let a = localStorage.getItem("anything");
         document.write(a);
        </script>
        localstorage;

        echo $local;

then the value of the varaible a will be print in the webpage,

Popularity 10/10 Helpfulness 3/10 Language php

Source: Grepper

Tags: add javascript php store

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Contributed on Nov 11 2021

Wide-eyed Wryneck

0 Answers Avg Quality 2/10

Closely Related Answers

pass php variable to javascript

Comment

//passing PHP variable to JavaScript
var myJSVar = <?php echo json_encode($myPHPVar); ?>;

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 05 2019

Grepper

0 Answers Avg Quality 2/10

how to use php variable in javascript file

Comment

<script type="text/javascript">
// boolean outputs "" if false, "1" if true
var bool = "<?php echo $bool ?>"; 

// numeric value, both with and without quotes
var num = <?php echo $num ?>; // 7
var str_num = "<?php echo $num ?>"; // "7" (a string)

var str = "<?php echo $str ?>"; // "A string here"
</script>

Popularity 10/10 Helpfulness 5/10 Language php

Source: www.dyn-web.com

Tags: file

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Contributed on Oct 17 2020

Dev

0 Answers Avg Quality 2/10

how to use php variable in javascript file

Comment

<?php
    $color = "Red";
?>
<script type="text/javascript">var color = "<?= $color ?>";</script>
<script type="text/javascript" src="file.js"></script>

Popularity 9/10 Helpfulness 4/10 Language php

Source: stackoverflow.com

Tags: file

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Contributed on Oct 17 2020

Dev

0 Answers Avg Quality 2/10

javascript variable store in php

Comment

<script>
var a="Hello";
</script>

Popularity 8/10 Helpfulness 1/10 Language php

Source: stackoverflow.com

Tags: javascript j

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Contributed on Sep 13 2020

Impossible Iguana

0 Answers Avg Quality 2/10

how to use php variable in javascript file

Comment

alert("color: " + color);

Popularity 9/10 Helpfulness 1/10 Language php

Source: stackoverflow.com

Tags: file

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Contributed on Oct 17 2020

Dev

0 Answers Avg Quality 2/10

how to pass javascript variable to php

Comment

<script type="text/javascript">
jsVar=document.getElementById("tag_id").innerHTML;
alert(jsVar);
</script>
<?php
$phpVar='<script type="text/javascript">document.write(jsVar);</script>';
echo $phpVar;
?>

Popularity 1/10 Helpfulness 1/10 Language php

Source: Grepper

Tags: javascript php

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Contributed on Mar 17 2022

Cooperative Cow

0 Answers Avg Quality 2/10

how to store javascript into a php variable

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