在javascript和php之间传递变量的代码演示
PHP variable to Javascript variable: 
<?php $myvar=10; ?> <script type="text/javascript"> jsvar = <?php echo $myvar; ?>; document.write(jsvar); // Test to see if its prints 10: </script>
Form variable to Javascript variable: 
<form name="myform4"> <input type="hidden" name="formvar" value="100"> </form> <script type="text/javascript"> jsvar = document.myform4.formvar.value; document.write(jsvar) // test </script>
PHP variable to Form variable: 
<form name="myform4"> <input type="hidden" name="formvar" value="<?php $phpvar=10; echo $phpvar; ?>"> // PHP code inside HTML!! </form>
Javascript variable to Form variable: 
<form name="myform3"> <!-- It needn't be a "hidden" type, but anything from radio buttons to check boxes --> <input type="hidden" name="formvar" value=""> </form> <script type="text/javascript"> jsvar=10; document.myform3.formvar.value = jsvar; </script>