Using PHP value in javascript - working in alert() but not getelementbyid -

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i using this:

$newpostid_fromcookie = $_cookie['scrolltobottom']+5000; echo "   <script>   window.onload = function () {     //document.getelementbyid('$newpostid_fromcookie').scrollintoview();     alert('$newpostid_fromcookie');   }   </script> ";

this correctly shows value cookie in alert, getting 'is null' error when trying use value in getelementbyid.

how can use value in this?

your $newpostid_fromcookie seems integer. in xhtml, not valid , maybe browser not it. should use string (with prefix example):

document.getelementbyid('cookie_$newpostid_fromcookie').scrollintoview();

of course, change html in consequence.


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