1 2 3 4 5 6 7 8 9 10 11 12 13 14 | <?php echo "<script language=" javascript ">" ; if (!isset( $_GET [ 'enable_js' ]) and $_GET [ 'enable_js' ]!=1){ echo "window.location='?enable_js=1';" ; } echo "</script>" ; ?> <?php if ( $_GET [ 'enable_js' ]==1){ echo "javascript is enabled" ; } else { echo "javascript is not enabled" ; } ?> |
สามารถนำไปประยุกต์ใช้ ร่วมกับ iframe ผ่าน ตัวแปร session ได้ดังนี้
ไฟล์ index.php
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <?php session_start(); ?> <html> <head> <title></title> </head> <body> <iframe name= "check_js" src= "check_js.php" width= "1" height= "0" frameborder= "0" > </iframe> <?php echo $_SESSION [ 'ses_js_enable' ]; ?> </body> </html> |
ไฟล์ check_js.php
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <?php session_start(); echo "<script language=" javascript ">" ; if (!isset( $_GET [ 'enable_js' ]) and $_GET [ 'enable_js' ]!=1){ echo "top.check_js.location='check_js.php?enable_js=1';" ; } echo "</script>" ; ?> <?php if ( $_GET [ 'enable_js' ]==1){ $_SESSION [ 'ses_js_enable' ]= "javascript is enabled" ; } else { $_SESSION [ 'ses_js_enable' ]= "javascript is not enabled" ; } ?> |