php - Passing a JavaScript variable to the view through a HTML form -


i'm having issue passing javascript variable through form correctly controller. i'm not sure how since it's first time working javascript. appreciated.

my code can found below: 

  <script>     function finddoc(e){       ...       var id = grid._data[rindex].document_id;    }     ...     {title: grab, template: "<form action = '<?php echo $exepath;?> docs/grab' method = 'post'><input type = 'submit' value = 'id'></form>", width: 90}     </script>

if attempting concatenate value of id javascript variable string in code have use javascript's string concatenation operator:

{title: grab, template: "<form action = '<?php echo $exepath;?> docs/grab' method = 'post'><input type = 'submit' value = '"+id+"'></form>", width: 90}

also, don't think want space in action url between php echo , docs/grab


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