Setting javascript variable equal to php variable by passing a parameter

[bjsteyn]

I am having problems with the following. I am wanting to hide <tr> in my table (employees) and only show employees that are in the selected department (selected via dropdown box).

I need to set a javascript array to a php array. I am looping and assigning the array and am wanting to pass a javascript variable as the index in php array. I have marked my problem lines in red. Thanx for any help.

<script type="text/javascript" >  
 
    function display_elements()
    {     
                 var departments = new Array; 
                 var dep_element_counter = new Array;
		 var dep_count = "<?php echo count($departments); ?>";
		 var e = document.getElementById("jdepartment");
                 var sel_dep_id = e.options[e.selectedIndex].value;
		 var id;
		 
		 for(x=0;x<dep_count;x++)
		 {

	         departments[x] = "<?php echo $departments[" + x + "]; ?>";
			
		dep_element_counter[departments[x]] = "<?php echo $dep_emp_counter[$departments[" + x + "]]; ?>";
		    document.write(dep_element_counter[departments[x]]);

		 }			
           	
                 if(departments[x] == sel_dep_id)
                 {document.getElementById(id).style.display = "";
		 }
		else
		{document.getElementById(id).style.display = "none";
		}	  

}
</script>

[twseitex]

Hi,

new Array is non constructor, new Array() is a constructor

var departments = new Array(); // values are indexes for dep_element_counter[departments[x]]
// string index possible ?

var dep_element_counter = new Array(); // values are stings

x is an index

departments[x] = "<?php echo $departments[" + x + "]; ?>"; // index is a string


dep_element_counter[departments[x]] = ....

document.write(dep_element_counter[departments[x]]); // document.write() maybe create a new document