Declare variable in php file that will access in JS/jQuery

Question

How can I declare a global variable in a PHP file and access directly in jQuery ?

HTML

<script type="text/javascript">   
   var date_selected = <?php echo $from; ?>;
</script>

JS

$(function() {
   alert("dsdsadasdas" + date_selected);
   var date = date_selected;
   var startDate;
   var endDate;
});

Because on my test its not working.

Answer 1

您缺少引号

var date_selected = '<?php echo $a; ?>';