Assign PHP value to JS

//here we have one php variable
<?php
$var = "This is my string variable in php";
?>

//In javascript/jQuery
<script type = "javascript">

var spge = '<?php echo $var ;?>'; // need to put single/double quote there for string variable
alert(spge);

</script>

//here we have one php variable

<?php

$var = "This is my string variable in php";

//In javascript/jQuery

var spge = '<?php echo $var ;?>'; // need to put single/double quote there for string variable

alert(spge);

</script>

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