html code
`<select name="vlcc"id="vlcc" class="form-control" required>`
`<select name="itemname" id="itemname" class="form-control" required>`
`<input type="text" class="form-control" name="balancestock" id="balancestock" > `
`script code`
`$(document). ready (function () {`
` $("#itemname"). change (function ()`
`{`
` var itemname = $("#itemname").val();`
` var vlccname = $("#vlccname").val();`
` $. get ("stock_vlcc_out_load_totalstock.php", {vlcc: vlccname, item: itemname}'
`function(data) {`
`//display the return data in browser`
`alert (data);`
` })`
`})`
`});`
`//stock_vlcc_out_load_totalstock.php file`
`<?php`
`$vlcc=$_GET['vlcc'];`
`$item=$_GET['item'];`
`echo $vlcc . $item ;`
`?>`